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 or ILLINOIS 
 
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 IL6b 
 
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UNIVERSITY OF ILLINOIS. 
 
 Agricultural Experiment Station, 
 
 URBANA, FEBRUARY, 1895. 
 
 BULLETIN NO. 37. 
 
 CORN EXPERIMENTS, 1894. 
 
 SUMMARY. 
 
 Experiment No. /, Corn, Testing Varieties. (See pages 4-16, 
 also bulletins Nos. 4, 8, 13, 20, 25 and 31.) This experiment shows im- 
 portant differences in the varieties of dent corn, illustrating the need of 
 careful selection of varieties by our farmers. Those classed as medium 
 maturing varieties have usually given best results. In six out of seven 
 years the medium maturing varieties have given larger yields than either 
 the early or late varieties. For the seven years the medium maturing 
 varieties averaged 65.2 bu. air-dry shelled corn per acre; the late, 58.8 
 bu. ; and the early, 55. 5 bu. The medium maturing varieties average 
 about as follows: Stalks about nine feet tall, bearing ears at a height of 
 rather more than four feet. The yield is about 9,500 ears to an acre, 
 weighing one-half pound each. The height of stalks and weight of 
 ears is less in the early maturing, and greater for the late, while the num- 
 ber of ears is less for the late, and about the same for the early. An 
 average of about 83 per cent, of the kernels planted produces mature 
 stalks. Barrenness does not seem to be a variety characteristic. It will 
 vary much with the thickness of planting and nature of season, there 
 being more barren stalks in an unfavorable year, or when planted thick, 
 than in a favorable year, or when planted thin. White varieties have 
 given larger yields than the yellow ones. 
 
 In general these tests indicate that the average farmer might largely 
 increase his yields of corn with very little additional expense. 
 
 Experiment No. j, Corn, Time of Planting. (See pages 16-18, 
 also bulletins as above. ) The largest average yield is from planting 
 
2 BULLETIN NO. 37. \_MarcA, 
 
 from the nth to i8th of May, with very little less from planting any 
 time from April 27th to May 25th. Very early planting usually requires 
 more cultivating and not unfrequently produces the poorest stand. 
 
 Experiment No. 4, Corn, Depth of Planting. (See page 18, also 
 bulletins as above.) Planting one inch deep has given better results 
 than planting at any greater depth. Plant at no more than sufficient 
 depth to get moisture to germinate seed. 
 
 Experiment No. j, Corn, Thickness of Planting. (See page 
 19, also bulletins as above.) When planting in rows 3 ft. 8 in. apart 
 the largest yield of grain is obtained by planting one kernel every 
 twelve inches ; while the food value of total product has been greater 
 when one kernel has been planted every six inches. When planting in 
 checks 3 ft. 8 in. apart the largest yield of grain is from four kernels in 
 a hill. 
 
 Experiments No. 6, Corn Planting in Hills or Drills ; No. 8, 
 Corn, Frequency of Cultivation; No. 9, Corn, Depth of Cultivation; 
 and No. 10, Corn, Effect of Root Pruning. (See page 19, also 
 bulletins as above.) There is no difference between planting in hills 
 and drills, except that hills give a chance for best cultivation. Shallow 
 cultivation has given better results than deep, the average yield for five 
 years being 5.9 bu. greater for the shallow cultivation than for the deep. 
 Root pruning has always reduced the yield. Very frequent cultivation 
 has never shown sufficiently better results to justify its practice. Better 
 crops can be produced without other cultivation than merely scraping 
 the surface to destroy weeds than by deep cultivation. 
 
 Experiment No. 23, Rotation, University Experiments, Con- 
 tinued. (See page 19, also bulletins Nos. 8, 13 and 31.) The largest 
 average yield of corn has been obtained by the liberal annual applica- 
 tion of barnyard manure, while much larger yields have been secured 
 by rotation than by continuous cropping, either without any manure or 
 by the use of commercial fertilizers. Barnyard manure has given poor- 
 est results in very dry years. 
 
 Experiment No. 89, Corn, Cross-Fertilization. (See page 20, 
 also bulletins Nos. 25 and 31.) Crossing varieties has usually 
 ncreased the yield. 
 
 Experiment No. 134, Corn, Effect of Removing Tassels. (See pages 
 2123, a ^ so bu^etin No. 20.) Removing tassels in 1894 increased the 
 yield 13 per cent., while in two former years there was no advantage 
 found in detasseling. At other stations, the results have most fre- 
 quently been detrimental. The good results occurred when there was 
 little rainfall during the period of removing the tassels. 
 
 Characteristics of the Soil and Season. 
 
 The experiments were tried on the dark colored fertile prairie soil, 
 common to central Illinois. The surface soil is about eighteen inches 
 
1895.] 
 
 FIELD EXPERIMENTS WITH CORN, 1894. 
 
 deep, underlaid with yellow clay. The land used for the variety test 
 was in oats in 1893, and was plowed in the spring, no fertilizers being 
 applied. Most of the land used in other experiments was in corn in 
 1893, and was plowed in the fall, after the stalks were removed, no 
 manure being applied except on plat i of experiment No. 23. In all 
 cases the corn was planted by hand in checks 3 feet 8 inches apart, and 
 covered with a hoe. 
 
 The season of 1894, while fairly favorable to the corn crop in 
 central Illinois, was somewhat short in rainfall. The aggregate rain- 
 fall, 1 2.43 inches, for the five months, May, June, July, August, and Sep- 
 tember was well distributed through these months. 
 
 The mean temperature for each of the five months was slightly 
 above the average of the same months for the past six years. Different 
 parts of the tract used for the varieties showed marked variation in its 
 capacity to withstand the drought, hence less importance should be 
 attached to the yields of different varieties this year than to their aver- 
 age yields for a series of years. 
 
 The table gives the mean temperature and the rainfall in inches 
 from May to September, inclusive, for each year from 1887 to 1894. 
 The records for 1887 and 1888 are those of the Illinois Weather Service 
 for central Illinois. For the remaining years the records are those of 
 the observations made at the Station. 
 
 TEMPERATURE AND RAINFALL DURING THE CORN SEASON OF YE\RS NAMED. 
 
 Year. 
 
 Mean temperature, F. 
 
 May. 
 
 June. 
 
 July 
 
 August. 
 
 Sept. 
 
 Ave. 
 
 1887 
 
 67.9 
 59-4 
 59-2 
 58.3 
 58.4 
 57-9 
 57-4 
 59 
 
 73-6 
 71-3 
 65-5 
 74-6 
 72 
 70.6 
 
 70.5 
 73-4 
 
 80.4 
 77 
 72.7 
 73 
 
 7 o 
 
 73.3 
 76.4 
 
 73-8 
 
 75.2 
 
 72-4 
 69.2 
 68.7 
 70.2 
 
 7i.5 
 71.1 
 
 72-3 
 
 66.4 
 62.4 
 61. 3 
 60.5 
 69.2 
 
 63-9 
 66.5 
 
 65 
 
 72.7 
 68 5 
 65.6' 
 67 
 68* 
 
 67.4" 
 68.4 
 68.7 
 
 1888 
 
 1889 
 
 1890 
 
 1891 
 
 1892 
 
 1893 
 
 1894 
 
 Average, 1889-1894 
 
 58.4 
 
 71.7 
 
 73-2 
 
 70.5 
 
 64.4 
 
 67-5 
 
 
 Rainfall, inches. 
 
 Aggre- 
 gate. 
 
 1887 
 
 3-84 
 6.84 
 5-52 
 3.56 
 .89 
 7.86 
 4-83 
 3-3 
 
 1.62 
 
 5-75 
 6.81 
 3-8 
 2.08 
 5.36 
 i-55 
 t. 7 8 
 
 1.65 
 5-34 
 5-84 
 2.83 
 1.41 
 2-5 
 59 
 i. 08 
 
 2.56 
 
 3.14 
 .6 
 
 1-93 
 2.86 
 
 2-43 
 .06 
 2.06 
 
 T Afi 
 
 3.68 
 
 1-95 
 2.74 
 1.19 
 4i 
 93 
 3-62 
 4.21 
 
 2 rR 
 
 13-35 
 23.02 
 
 21 .51 
 
 13.31 
 7.65 
 19.08 
 10.65 
 12.43 
 
 1888 
 
 1889 
 
 1890 
 
 1891 
 
 1892 
 
 1893 
 
 1894 
 Averaee 1880 1804 
 
 
 
BULLETIN NO. 37. 
 
 Experiment No. i. Corn t Testing Varieties. 
 DIAGRAM OP PLATS. 
 
 [March, 
 
 cf/ 
 
 77 
 
 73 
 
 fi9 
 
 6J- 
 
 6' 
 
 / 
 
 5 
 
 JJ 
 
 49 
 
 4J 
 
 4/ 
 
 37 
 
 33 
 
 9 
 
 zs- 
 
 &t 
 
 17 
 
 /3 
 
 9 
 
 f 
 
 / 
 
 an 
 
 73 
 
 7^ 
 
 70 
 
 66 
 
 t 
 
 J9 
 
 <F-f 
 
 J'o 
 
 46 
 
 4R 
 
 3d 
 
 34 
 
 30 
 
 6 
 
 ise 
 
 /<} 
 
 /4 
 
 /o 
 
 6 
 
 e 
 
 83 
 
 79 
 
 7* 
 
 7' 
 
 67 
 
 h 
 
 09 
 
 3~S 
 
 3/ 
 
 47 
 
 13 
 
 J9 
 
 3f 
 
 31 
 
 27 
 
 Ki 
 
 /? 
 
 sf 
 
 it 
 
 7 
 
 a 
 
 64 
 
 SO 
 
 7* 
 
 7-e 
 
 eJ 
 
 64 
 
 ISO 
 
 SO 
 
 se 
 
 46 
 
 44 
 
 40 
 
 36 
 
 3s 
 
 &6 
 
 4 
 
 80 
 
 SO 
 
 / 
 
 8 
 
 ^ 
 
 Tests of varieties of dent corn have been made for eight consecu- 
 tive years reports of which may be found in bulletins Nos. 4, 8, 13, 20, 
 25 and 31. 
 
 It has been the object from time to time to drop from the test such 
 varieties as were clearly shown to be inferior to the average, and con- 
 tinue only those of high merit, with which to compare such new 
 varieties as might come to notice. 
 
 The land used in 1894 was ' n oats ' ltl '^93 anc ^ * n wheat in 1892. 
 Excepting plats i, 5, and the east third of 9, which were not plowed at 
 all, it was plowed about five inches deep during April and harrowed and 
 smoothed just before planting. Excepting plats 77, 78 and 79 the corn 
 was planted May 9th and loth. The three excepted plats were planted 
 a few dsys later. It was planted by hand, four kernels a hill (excepting 
 plats 8 1 and 83, which had only three kernels a hill, and which are left 
 out of the following tables), in checks 3 ft. 8 in. apart and covered from 
 one to two inches deep with a hoe. 
 
 There were 84 plats, as shown in the diagram, each one-fortieth of 
 an acre, 2 rods or 9 hills square. They were so planted that corn grew 
 on every side, there being extra rows on the border. 
 
 May 1 7th to July 2d, the corn was cultivated four times with sur- 
 face cultivators, the first three times with the Superior, and the fourth 
 time with the Tower. The diagonal line running across plats 57, 61, 
 62, 63 and 68 is the approximate location of a tile drain, and is the 
 lowest part of the tract used. The land on both the east and west 
 sloping toward it. The fact that the most of the large yields were 
 made in the vicinity of this drain, and that the same varietie's planted 
 here yielded more than twice as much as when planted near the east 
 end of the tract, indicates that this part withstood the drought very much 
 the best. 
 
 The chinch bugs from an adjacent wheat field attacked the corn 
 soon after the wheat was harvested, but by diligent work in construct- 
 ing barricades of finely pulverized earth, over which they were usually 
 unable to pass, and by the liberal use of coal tar, which is very obnox- 
 ious to them, their depredations were confined to the first row of plats 
 on the north, where by the free use of kerosene emulsion they were 
 destroyed by the million. The north row of plats was injured to the 
 
18950 
 
 FIELD EXPERIMENTS WITH CORN, 1894. 
 
 extent of about 25 per cent. The results from these plats are published 
 in the lower part of the tables, but are not to be compared with those 
 of the uninjured plats. . 
 
 The number of barren stalks, one-eared and two-eared stalks, was 
 ascertained for the middle third of each plat, and the average height to 
 butt of ear and tip of tassel for each plat. Observations were made on 
 the time of ripening. October i5th to November 5th, the plats were 
 husked by thirds, and the weight and number of ears ascertained for 
 each third. The middle third was at once shelled and the number and 
 weight of both good ears and nubbins, and the weight of both shelled 
 corn and cobs ascertained. A pint jar of shelled corn from each plat 
 was sent to the laboratory for determination of water. Eleven per cent. 
 is taken as the average water content of air-dry corn. 
 
 DUPLICATE PLATS. 
 
 While the attempt has always been to have uniform soil and like 
 treatment throughout, the differences in yield of plats planted with the 
 same variety have always been considerable. This year there were four 
 plats of Burr's white and five of Boone County white that were in the 
 part not affected by the chinch bugs. 
 
 In case of each variety the smallest yield was less than one-half that 
 of the largest. This is a greater variation than is usually found in the 
 same variety, and it is believed to be chiefly due to the nature of the 
 season and the variation in the capacity of the soil to retain moisture. 
 Had the season been wet instead of dry, it is believed that the plats that 
 gave the largest yields would have given the smallest. This is a strik- 
 ing illustration of how little may be the value of a single year's results. 
 
 When the variation of yield of different varieties does not exceed 
 that of different plats of the same variety the results are inconclusive. 
 A greater variation may properly be attributed, in part at least, to the 
 variety. If single plats are used, it is only after varieties have been 
 tested for a series of years that we can conclude which are the most 
 prolific; but other things can be ascertained in a single year, such as time 
 of maturity, size, ratio of ears to stalks, ratio of shelled corn to cobs, 
 and the general characteristics of st~.L- :.""* ear. If several plats, widely 
 distributed over the tract, are used for each variety ana the average 
 yields ascertained, these form a better basis for a comparison of the 
 varieties in respect to yield; for in this way the effect of differences in 
 the conditions of the test is much diminished. 
 
 YIELD PER ACRE FROM DUPLICATE PLATS, BU. 
 
 Variety. 
 
 a 
 
 b 
 
 c 
 
 d 
 
 e 
 
 Average. 
 
 Boone Co white 
 
 43 .Q 
 
 78 7 
 
 q8 4 
 
 86 6 
 
 64 
 
 74.7 
 
 Burr's white 
 
 38.5 
 
 78.2 
 
 90.2 
 
 71.8 
 
 
 69.7 
 
BULLETIN NO. 37. 
 
 [ March, 
 
 MIXTURES. 
 
 Two plats were planted, each with equal parts of two varieties of 
 corn, and two with equal parts of four varieties. One of the first two 
 was among those injured by chinch bugs, so account is taken only of 
 the other three. The accompanying table gives the per cent, of barren 
 stalks, number of ears and bushels per acre for each variety planted 
 separately, and their average as compared with the result of the mixture. 
 In every case the mixtures gave very much the larger yields, but this is 
 believed to be due chiefly to their more favorable location. In 1893, in 
 four out of five cases, the yields were larger for the mixtures, while in 
 1892, in four out of five they were smaller. 
 
 RESULTS OF MIXTURES, 1894. 
 
 Plat No. 
 
 Name of Variety. 
 
 Tl 
 o> 
 >i 
 
 
 (B -! CD 
 
 5? 8 5 
 tn M 
 
 cr 
 
 i 
 
 Yield per acre. 
 
 No. of 
 ears. 
 
 Bu. 
 air-dry 
 corn 
 
 16 
 M 
 
 54 
 
 Champion white pearl 
 
 13 
 15 
 
 14 
 16 
 
 8440 
 7000 
 
 5i 
 34 
 
 First premium 
 
 Average 
 
 7700 
 9400 
 
 42.5 
 
 77-8 
 
 Mixture 
 
 Av. 4 plats 
 
 " 5 " 
 8 
 
 2 
 
 55 
 
 Burr's white 
 
 M 
 
 7 
 
 2 
 
 5 
 7 
 15 
 
 IOIOO 
 
 9824 
 
 5800 
 8940 
 
 69.7 
 
 74-3 
 41.8 
 
 57-7 
 
 Boone county white ... 
 
 Dunlap's white 
 
 Dillon's white 
 
 Average 
 
 8666 
 10080 
 
 60.9 
 90-3 
 
 Mixture 
 
 22 
 
 23 
 30 
 32 
 
 70 
 
 Clark's Onarga 
 
 iQ 
 6 
 
 9 
 5 
 10 
 19 
 
 9080 
 9920 
 9200 
 10080 
 
 44.2 
 
 54-3 
 60.2 
 66.9 
 
 Edmonds 
 
 Champion yellow dent 
 
 Reid's yellow dent 
 
 Average 
 
 9570 
 10840 
 
 56.4 
 74-3 
 
 Mixture. 
 
 CLASSIFICATION OF VARIETIES. 
 
 The table on page 7 gives a classification of the varieties tested 
 this year, and the yield of air-dry corn for each variety, together with 
 the average for its class. It is based upon the time of ripening, color, 
 and smoothness or roughness of the outer end of the kernels. Varieties 
 maturing before Sept. I2th are classed as early; those maturing Sept. 
 1 2th to 3oth, as medium; and those maturing Oct. ist, or later, as late. 
 
 The varieties that are very near the dividing lines, as to time of 
 maturity and smoothness or roughness, are subject from year to year to 
 change from one class to another. 
 
 RESULTS. 
 
 The number of plats in each of the three classes, early, medium, and 
 late, and the results for each class for each of seven years, are shown in 
 the table on page 8. In each of the years 1888 to 1892, inclusive, and 
 
FIELD EXPERIMENTS WITH CORN, 1894. 
 
 SYNOPSIS OF VARIETIES, 1894. Yields. 
 
 | Cuban queen 72.7 ) 
 
 I Waterloo extra early.. ..64.9 ! 
 Smooth.,! Minnesota king * JJJ ^60.3 
 
 Huron 64. 3 
 
 f Yellow. 
 
 f Edmonds 54.3 
 
 j Learning 67.6 , 
 
 Rough, .-j Pride f Columbia 4g \ 9 61.* 
 
 itar y. . . <j ^ Edmonds-Murdock cross 73.0 J 
 
 ( Smooth. { Van's early {64.6 
 
 White.. ] 
 
 ( T? ,~v, ^ White (no name) 62.7 ) ,, 
 
 ^ Rough., j Davis ^proved. 69.6 I 66 ' 1 
 
 f Arleus 43.6 } 
 
 Fisk's yellow 45.2 
 
 Clark's Onarga 44.2 
 
 Learning 62. i 
 
 Yellow (no name) 37.0 
 
 Star 53.2 
 
 Ried's yellow dent 66.9 
 
 Legal tender 57.0 
 
 Smooth. ( John Cloud 75.2 ^60.9 
 
 Yantis. . . 85.4 
 
 Sterling 72.6 
 
 Learning-Edmonds cross 60 
 
 Golden beauty-Learning cross-72. 7 
 rv ,, Learning-golden beauty cross.. 87.0 
 
 Early mastodon 68.3 
 
 Queen of the prairie 46.7 
 
 The Conqueror 58. 3 j 
 
 Steward's improved . . .,32.5 ~\ 
 
 Riley's favorite 62.8 I 
 
 i Champion yellow dent 60.2 f 54- 3 
 
 ^ Mortgage lifter 61.8 j 
 
 (Smooth.] Calico... 91.5 { 6 r 
 
 Corn.... Medium.*! Mixed..] 
 
 ^ Rough. . -{ Edmonds-Burr's white cross. . }-49-5 
 
 f White (no name) 57.7 
 
 Boone Co. white (av. 5 plats). 74.3 
 
 Burr's white (av. 4 plats) 69.7 
 
 Forsy th's white 51.2 
 
 First premium 34.0 \, 
 
 Mills Co. white 37-2 ' 
 
 Champion white pearl 51.0 
 
 Charles Cloud 90.2 
 
 Wh i, Waggoner 88.9 
 
 t White (no name) 69 o 
 
 f White beauty 55.4 \ 
 
 j Dunlap's white 41.8 i - 
 
 | J. J. Freeland 77- f 
 
 L Champ. w. p. -cranberry cross. .51.7 J 
 
 {Helms improved 44.3 | 
 Hickory king-Helms imp.cross. 79. 3 > 56 . 8 
 White (no name) 46.8 J 
 
 ^ TTUllG..-. 
 
 Rough.. \ Burr's white-cranberry cross. }-47-o 
 
BULLETIN NO. 37. 
 
 [March, 
 
 Per cent, water in corn as 
 husked. 
 
 cooo N vooooo in * N co C7i co vo in co ix * N 
 
 00 O M 
 
 M N M N N M M N iT*"** WNW N CO 
 
 Loss per acre in drying, bu. 
 
 * tx H> ix ixtx ':: oo o-i MVOVO 
 
 txO\ tx 
 
 tx w oo co cooo cnincji txixtx in txvo 
 
 mvo tx 
 
 ja" Total air-dry. 
 
 VOCOM vo *m vo vo MM* oo w txm 
 
 M 00 CO 
 
 m 01 co m in co in w vo vovotx N oo o OMVO 
 
 N CO * 
 VD vo m 
 
 <U 
 
 g Total, as husked. 
 
 VO VO CO m N cotxVO 01 C* OOM OOMVO 
 
 00 IX 
 
 SS ESS, % %>$$ vgJQSg S?S!g 
 
 tx O N 
 VD IXVO 
 
 01 From nubbins. 
 
 T3 
 
 IONOOOO UIM 
 
 
 2 As husked per bu. air-dry. 
 
 CO*HQO VOMM -rfrO OOOO H-^O Ci O\CO 
 COOO* IX O w O O* fOOO N 1THO fx'O O\ -f ^CO 
 
 VO N 
 tx txOO 
 
 HI 
 
 J As husked per bu. 
 
 NTJ-^J- MVO -NN cnro^ M -* rhtx ixtx 
 
 rxoo ^ voo^w voixtx voqir-N. OOOOM wcotx 
 
 yD'Ot*- vO"Otx vOyDO VO^O'O \OvOIx t^-.rsr's 
 
 00 Ol M 
 
 VO VD tx 
 
 100 average ears. 
 .0 
 
 r^ NCOCO 
 
 roGO O ^nfN -^J-Ooo OOOCi Hir'l^ O^rico 12u-i5 
 
 o 100 nubbins. 
 
 Qfl 
 
 'Z 
 
 O\ M invO 
 
 ff&8 
 
 
 
 100 good ears. 
 
 CO M \O >O CO 
 
 \n\D vi 
 
 O^-rn VDNM ir>MO OiOO w cO^O w 00 rt Oi 
 VO tx O> -^ txOO *O>O VO "* iOVO T)^O 00 ^ in rt- 
 
 Total number ears per acre. 
 
 ncooO OOu"> Tj-Mfx N ro NOO^n VOtxO "OO 1 * 
 
 Number nubbins per acre. 
 
 co M >n o m o 0\<0 oo Q M en * oo O 
 
 Tf 1 ^- 1 ^- tOCOrl- MTJ-Q OO O OO fN.'O Tf ^-0 
 O> IX tx CO u")QO VO txOO O ^*- "O^J-O T*-T)O 
 
 enmrx 
 
 2O ON lO 
 
 Number good ears per acre. 
 
 rN.Nco omm Tt-M TJ- N NGOM cono 
 D TJ- W mvo Q cONVO * M NrhO Ncom 
 
 Hs 5 
 
 rxvo tx 
 
 Circum. 3 specimen cobs, 
 in. 
 
 
 rx TS- ^ co txoo corxo\o^vnc^ 
 
 co-t^- coro^- cococo co co en co co ^ ; ; - ; - ; 
 
 Circum. 3 specimen ears, 
 <u in. 
 
 on 
 
 co , w ^-c, ^VON NVOM MO : : : : : : 
 
 VDIXIX VOVOtX VOVOVO VOVOVO VOVOtx 
 
 <u Length 3 specimen ears, 
 > in. 
 
 CO Ix *HIVD MCO*VO m tx *oo 
 
 
 Height butt of ear, feet. 
 
 mine* oowtx mmw *Nco fxco* covo co 
 
 oo ro t^ 
 
 *mvo N** co*m co** co*u-> coco* cicoco 
 
 Height stalks, feet. 
 
 OOmN O^O^Ol MVOHI oo tx*O M OO N CO IX M tx 
 
 OlMN VOOOO1 OOdO VD txOO CO OO O fN txOO 
 
 tx txOO 
 
 Of barren stalks. 
 
 33MCO MM'' ONCO ON* OOO^O NCOO 
 
 -MM 
 
 
 Of full stand. 
 
 M 
 
 coixm *ooo oicooi vovo* MNO *NOO 
 
 00 00 OO 00 OO tx f^GO tx OOOOCO OOOOOO ClO*C7l 
 
 00 OOOO 
 
 &, Kernels germinating in 1 "? : : : 
 
 GolA *O * o oo m MVO M ixao tx M tx in > 
 
 I1G1U. | OO OO tx IXVO VD OOOOOO OOOOOO CT\OO OO . . 
 
 
 Kernels germinating in 
 apparatus. 
 
 VO IX O CO IXVD VO*CO .1. VOO1CO VD "^^ 
 
 Cl O1M 
 
 
 f sl.3 : p;.2 : a> J,.H : ^.2 : <f 5 ': <z ^.H : \ 
 
 "S fT co H?^ m * N "o 2" N 2? H?* 'S^Svo' Cl O ** N ( 
 
 > > > > > > i 
 
 ii early 
 48 medium 
 4 late 
 
1895.] 
 
 FIELD EXPERIMENTS WITH CORN, 1894. 
 
 .0 
 
 b 
 
 M 
 
 8 
 
 M 
 
 i 
 
 Av. ears. 
 
 O M m M oo t^ 
 Tf Tf m m m m 
 
 1 
 
 g 
 
 S 
 
 ^ 
 
 mvo Tfvo oo f^ Tf M ON moo m mvo f~ O m co M Tf Tf 
 co co co co co co Tf in pi vo in in in in in in Tf co in co Tf 
 
 Nubbins. 
 
 M M PI M ON O 
 
 PI PI pi pi M m 
 
 ONPiOMMt^Mmmmt^moOM t~oo mvo m ON 
 
 Good ears. 
 
 fVO OO PI t-x PI 
 
 Tf Tf mvo vo vo 
 
 PIVO inMvo ONTf^w t^TfmmcoO N moo m Tf t-~ 
 mTfmmTfTfmm Tfvo vo vo vo vo f~vo in m t^ TJ- m 
 
 No. ears per acre. 
 
 Total. 
 
 O O O O O O 
 O Tf O O O O 
 00 PI O OO t-^00 
 
 ooooooooooooooooooooo 
 
 OO PI Tf TfOO O VO TfOO VO VO Tf Tf VO OO OO PI VO 00 PI PI 
 
 O M pi oo oo PI ONOO vo M mvo oo covo o t> c~.oo m m 
 
 ON ON ON O tvoO 
 
 1 
 
 .8 
 
 HI 
 
 Nubbins. 
 
 m ON PI M mm 
 ON O OO VO mvO 
 O ON M moo M 
 
 OTfOvOmOt^-OoOMONONOTfO ONVO t^ "1 O O 
 O vo co co t-^ f^oo co Tf f^ M ONOO covo PS M oo o m m. 
 
 
 Plants 
 
 
 Good ears. 
 
 m M oo ON t^ m 
 
 O co M co O co 
 t-. COOO PI ONVO 
 
 Tf Tf cooo l^ t^ ON O 00 PI covo vovo MOO t^ONOvOvO 
 O TfONTfM TfO inM Tf Tfvo ON ON O t^ moo OO ON ON 
 
 vo vo vo 1 s * in t^ 
 
 
 Tf m co Tf co mvo Tf mvo vo t^vo vo mvo r^- co covo co 
 
 Plat No. 
 
 03 
 ON O O PI co Tf 
 f^OO 00 00 OO 00 
 
 M M pi pi pi mcoTfTfTfin mvo vo vo ^ t^oo 
 
 o 
 o 
 
 M 
 
 Av. ears. 
 
 m M O m ONVO O t-> Tf oo N 00 M PI O> Tfvo VO M f^oo ON rf Tf TfoO O OO PI 
 m in Tf Tf m mvo vo t~ mvo vo Tf Tf Tf Tf vo vo Tf Tf covo m Tf m m m m m 
 
 Nubbins. 
 
 CO M COVO Tf O OO M 
 
 mom f--vo vo t^ONinpi mpi Tfpi mMvo MVO Ovo 
 
 Good ears. 
 
 Tf C^ ON M M MQOVO 
 
 vo m Tf in c^ vo vo t^ 
 
 Tfooo mpioo COCOM mONPi O coo mTfpi o mm 
 oo t-^vo t"x in Tf in in c^ t^ mvo vo oo r^ mvo t^. Tf Tfvo 
 
 o5 
 
 o 
 rt 
 
 b 
 
 U 
 
 O. 
 en 
 rt 
 
 OJ 
 O 
 
 Z 
 
 Total. 
 
 OOOOOOOO 
 NOOPIOOVOOTf 
 ON PI PI t^vo co o vo 
 
 OOOOOOOOOOOOOOOOOOOOO 
 Tfpi OOOVOVOOO PIOO PIVOOOVO O Tf VO 00 Tf PI TfOO 
 
 o t^Tfo U~)M inM o mONO coooo r^-ooo t^oo PI 
 
 M o ON O ON O 
 
 O 
 
 OMONOOOMPIOOMMOOPIMOOPIPIOOONMO 
 
 
 Nubbins. 
 
 ON O PI M co in 
 co m M co PI ON 
 O m co m m PI 
 
 si? 
 
 r^Tfint^TfM NOO ON ONOO N l^* Tf Tf Tfoo ON Tf o m 
 O moo Tf Tf PI t^ m M PI inoo O Ovo r~O Ovo Tfpi 
 
 m PI co pi M M 
 
 PI PI 
 
 pipii-iMpipiMpipipimcompipicocopiPipim 
 
 Good ears. 
 
 M o oo ON c-~ m 
 
 oo moo oo mvo 
 oo vo oo m M o 
 
 MVO PI MVOOO TfO COM c^pivo coTfmco ONOO M o O m 
 3NOO vo r- -i- O M in in cooo PI t- moo m ON M ON Tf oo Tf Tf 
 
 oo r-. moo oo ON 
 
 fxOO 
 
 t-~oo t^oo vo oo O moo ON moo vo t^oo ONOO vo t-oo t^ 
 
 M 
 
 Plat No. 
 
 O Pi- co Tf vo C^OO O 
 
 M PI Tf mvo oo ON O PI co Tfvo t-~oo O M PI Tf mvo oo 
 
 xi 
 
 i 
 
 8 
 
 M 
 
 Av. ears. 
 
 M M VO OO M t^ 
 
 ON t 
 
 Tf pi mvo Tfoo mvo COMOO M N coTfO mo O PIVO 
 
 Nubbins. 
 
 r^oo vo o co co 
 
 S3 
 
 Tfmcoinpi ONcomt^M moo ONCOCOPI o O Mt~-m 
 
 Good ears. 
 
 co mvo ON ONOO 
 invo m Tf mvo 
 
 %V 
 
 TfrnTfinminmininvovo mmvo Tfmvo mtxvo m 
 
 f 
 
 a 
 
 n 
 
 N 
 b 
 
 
 
 o' 
 Z 
 
 Total. 
 
 O O O O O O 
 
 Tf 00 Tf Tf 00 O 
 
 ON O vo PI PI 00 
 
 ooooooooooooooooooooooo 
 
 PI TfO O TfTfPlOO OOO PIOO TfOO VO OVOOO TfPIVO PI Tf 
 
 t^oSpi O O TfONTfo o ONOO Tfpimpi COOPICOON mvo 
 
 oo oo oo ON o m f^oo 
 
 O r-OO 00 t^vD 00 ON ONOO OOOOOOONOOOOvOO"iO 
 
 Nubbins. 
 
 Tf OO vo VO vo vo 
 
 OO M 
 
 ovooo O t^Tfmo Tfm cooo M vo oo co co ONOO o M 
 
 OO M ON Tf pi oo 
 
 HI m PI moo M in co t~-vo vo O oo PI oo Tf M ONVO Tf moo vo 
 
 M m PI CO CO M 
 
 CO PI 
 
 PIPIPINCOP|MPIPMPIPIMP|COMNPIMPIPI 
 
 Good ears. 
 
 vo PI Tf Tf Tf ^ pi ONO Tf N o covo mOvO m f Pi ON T|- pt t^t^M pi o ON 
 O m ON O O f~.vo vOPiinomt^comOMVooopiOin t^oo " PI Tf o O 
 M ON vo oo O ON in m ON Tf pi m m M PI Tf co oo m o c^ t^ M o vo oo Tf t^ o 
 
 tx Tf m m t^- co 
 
 Tfvo t- Tf mvo Tf Tf vo vo c^ r-~ mvo vo vo t^oo t^ t^ mvo oo 
 
 Plat No. 
 
 PI co Tfvo f~oO 
 
 H 
 
 M H 
 
 pi Tf mvo oo ON O PI co Tfvo f^oo O M N Tf invo oo ON 
 
 MMMMMMPIPIPIPIplplPICOCOCOCOCOCOmm 
 
IO 
 
 BULLETIN NO. 37. 
 
 [March, 
 
 IN 
 
 DC 
 
 Ears. 
 
 N 00 M t^O> N VO N m - l^ f t^VO t^.t-.NMO>NMt^ M 
 
 roforomN N m ro N m N N ci N CON ro mmmromfON m PO * 
 
 Stalks. 
 
 ^oo-tx^oooti^ti^oootioo^^ti^^ti^^tioo- 
 
 Per cent, of bar- 
 ren stalks. 
 
 10 vo PO t^ ^" o) vo O f*o 10 oo PO M ci o CT> vo Oi O "^ M ^ m >ooo *^* O\ 
 
 MM MM M MMNNM MMPI MN 
 
 Per cent, of full 
 stand of stalks. 
 
 O> moo N oo t>. co ^ doo vo M movooooo M romo\Mvo M M mo 
 r- t^ t- o>oo -^-co oo vo t-oo oo vo vo r^oo t^oo oo ovoo oo oo oo oo oo tx 
 
 Percent, germinat'g 
 in Geneva apparatus. 
 
 3CIOOOOMOOO -<t-OO 30OVONVOOOO -OOOOOOOVOVOVOO-^- 
 
 MM M M M 
 
 
 
 T3 
 V 
 
 '53 
 u 
 
 O 
 
 TJ 
 V 
 V 
 
 
 "0 : : * -a ' : 
 
 
 
 : ^ : \ : <~ -^ : : 
 
 _i, & ^fe ffi P i-Atf Mi,S HAU J W ffi H ,5 aj ,-^^^2 CQ 5 
 
 ~v 
 
 'a 
 
 *0 
 
 <o 
 
 1 
 
 
 . .-: g S . >. 
 
 e-S6 <u'S r g rt^a"? 
 
 o H '^ S 3 S 4 : o * 1 s 
 
 i--li : i-"l|ii ifo^^s ij^gigl 
 
 tJ 6 " .- "Q " M *'" tn S^i!"p^ 4^^ u ' rt ^ ^ ^ ** S) 
 
 Plat. 
 
 N ro 1-vO C^OO O M N 'J- uivo OO O> O N (O ^-vO t^-oo O M w * mvo 
 MMMMMMMMC4NNNdWNfOCOPOrOfOPO 
 
1895-] 
 
 FIELD EXPERIMENTS WITH CORN, 1894. 
 
 II 
 
 w PO rf 
 
 m 01 
 
 d P*" 
 
 POPOPO*- 
 
 POPOPOTT 
 
 PO * re 
 
 10 COIN ro 
 
 m - m 
 
 m T|- N 
 
 HI N CO 
 
 PO N 
 
 PO PO 
 
 00 VO 
 
 10 M 
 
 c\ * 
 
 M N HI M 
 
 vo o PO 
 
 * 1000 
 
 Cx tx N 
 
 \o t^oo 
 
 VO t^ tN 
 
 N rr> M 
 
 00 HI 
 
 PO M 
 
 tx vo r^oo !" 
 
 VO OO 00 00 G*00 00 vTtOO OO 
 
 ^oo C** o oo vo oo c^ d t** c*^ ^ t^ 
 
 M 
 
 VO t^.00 
 
 ^^ 
 
 00 00 
 
 00 N VO 
 M HI 
 
 twt-^ 
 
 M 
 
 M 
 
 vo m ror>. 
 
 M M M 
 
 N 
 
 O> P< OO N 
 HI N M 
 
 PO M 
 
 
 
 H t^ 
 M 
 
 o o 
 
 N HI 
 
 N CC VO 
 
 doo 
 
 co O 
 
 C^OO 
 
 o r>o vo 
 
 O^oo oo oo 
 
 -VO 0> N 
 
 O\ ^ CTv CTi 
 
 t^-O OO 
 
 c^ doo 
 
 1- ^- >O O> 
 
 CT> O> O* O* 
 
 M 1O O 
 
 H 00 O 
 M HI 
 
 * 04 M 
 
 O OO 00 
 
 VO m w 
 XOO CO 
 
 PO ID 
 
 O*00 
 
 t^ N 
 
 O\00 
 
 8^8 
 
 M M 
 
 %% 
 
 rl- O 
 CM O 
 
 HI 
 
 OO OO 00 N 
 OO OO O> CT> 
 
 PO < O 
 CTiOO O 
 
 M M 
 
 O ft O 
 
 O CTi O 
 
 OO O O O 
 00 O C\ O 
 
 00 OO OO O O O 
 
 CTIOO a\ o o 01 
 
 IN O O 
 00 
 
 O 
 
 o 
 
 O 00 
 
 o oo 
 
 
 
 
 . 
 
 : : f aT j> TJ 8 S - 
 
 "cio 
 
 a a 
 
 43 ja 
 HO 
 
 60 o 
 
 a 
 
 6JD 
 'rt 
 
 a. 
 S- 
 
 rt 
 
 6 
 
 H w . 
 
 O '2 43 fl a 
 
 M 2 - o ac > 
 
 ' ' 
 
 ^< a 
 
 
 . o -.0 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o 
 
 c _ 
 
 
 
 a 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 T3 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 O 
 
 
 
 o 
 O 
 
 
 
 
 
 
 
 
 
 
 
 
 
 PO 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 fTv 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 00 - - - 
 
 
 oo "- 
 
 
 00 
 
 M 
 
 " rt 
 
 
 
 9 
 
 1 
 
 > 
 
 
 a | 
 
 a 
 
 
 
 I 
 
 ! I 
 
 
 1 
 
 1" = 
 
 __ 
 
 e 
 
 "a H 
 
 1 5 : S J8 -| * $-| : .g 
 
 
 00 ..->,>% 00 - .>* 
 
 00 
 
 "PQ 2 o .S3CQw^ 1 
 
 
 
 
 
 
 o ?; ,"- .t: 2 " 5 
 
 . Qh|tfh M 
 
 
 5 -| as S 
 
 
 
 2 
 
 t 8lifi 
 
 I-- 'M^^^H fe 
 
 
 ^* a> > ^* S 
 
 ^ 
 
 5~ ~ /^\^j '^3>o 
 
 '"'M * '5 E - - 
 
 
 o.- G "* o.- , e 
 
 JJ*. . - C fl Jj - - C 
 
 y* 
 
 g ^ ffi g -3 E 
 
 H H^J ? 5 45,^ O 
 
 
 W H^P W nS, 
 
 W 
 
 as w H^H-^2 P ni 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 : : g 
 * P t* 
 
 8 : : : 
 
 i 
 
 ^ a 
 
 P o 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o Q. i-c 
 
 o M <2 
 
 60 .^ 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 * a) J3 
 
 s s : 
 
 a 
 
 
 
 
 
 
 
 
 rt 
 
 il 
 
 T 
 
 
 1 
 
 
 
 
 
 1 1 i I s 
 
 1 S -J 1 
 
 ? B 1 8 !; 
 
 43 
 
 S = E >, 
 
 6"" 3 
 rt 
 
 rt <u 
 
 <D J2 
 
 ^ c 
 ^ <U c 
 
 c 
 
 ) 
 
 i-s'I 
 
 a'c3 a 
 
 
 S 
 
 T3 
 
 
 "o f 
 
 S 
 
 % 
 .- 
 
 a c 
 
 
 
 
 
 v " 03 .S . o .- 
 
 
 
 
 
 "^43 ^" 
 
 i 
 
 
 a 
 
 
 
 .v v 
 
 & 
 
 c 
 
 U F 
 
 ' O - 
 
 U"J 
 
 i 
 
 i 
 
 C 
 
 U M 
 
 (i) * 
 
 i 
 
 . n 
 
 i 
 
 w 
 H 
 
 E 
 
 '43 1 "^ ? * 
 <0 '2 2" 4) ." 
 
 tn Ji 1 g-2 
 
 ^ " y o a. 
 
 a P .3 JJ v. 
 
 a.2 
 
 rt 
 
 "c 
 a 
 a 
 
 c 
 
 8^ ij 
 
 -4: 
 3 
 
 e cou 
 
 rt 2 x^ 
 
 mm 
 
12 
 
 BULLETIN NO. 37. 
 
 [March, 
 
 Ears. 
 
 N N M <!- O\ M N O 
 
 Stalks. 
 
 Per cent, of bar- 
 ren stalks. 
 
 Per cent, of full 
 stand of stalks. 
 
 Per cent, germinat'g 
 in Geneva apparatus. 
 
 ed 
 
 Plat. 
 
 c*-. *o r** rovo co 10 o\ r> 
 vo c^ r^ oo oo co c^t^o m\o 
 
 Tf t^VO NOOVOONVO'O'^-Tl-MN 
 
 MMMM M(q MM MM 
 
 a a -; -rj^H--- aao 
 ^eort'i ( s ao^w 
 
 - 
 
 ll :- ia^ 
 J 1 a | ^ 1 J 
 
 ^ 111 .3 ft" 
 
 W , 
 
 
 
 
 
 
 O 
 
 
 
 
 
 
 
 
 
 o 
 "C 
 
 
 
 
 u 
 
 CD 
 
 
 1 
 
 
 
 
 B 
 
 a) 
 
 
 J3 
 
 
 
 
 > 
 
 .^ 
 
 ^ 
 _rt o 
 
 .r 
 
 ^ 
 
 in 
 %- 
 
 
 I* Q) 
 
 1 .- 
 
 
 
 cr 
 
 ~a 
 
 ^ 
 
 '"'a i 
 
 5 
 
 pn ^ 
 
 
 
 n 
 
 \ 
 
 2 rt 
 
 W IN 
 
 a a 
 
 5 3 *? 
 
 I ^ 
 
 , 
 
 ) ^.E 
 
 4- 
 
 J- 
 
 M 'c 
 
 j O C 
 
 .2 -2 
 
 8 8 5 
 
 "o i 
 
 -g 
 
1895-] FIEI,D EXPERIMENTS WITH CORN, 1894. 
 
 VARIETY TESTS, YIELD, 1894. 
 
 IS 
 ?T 
 
 Name of Variety. 
 
 Per cent. water in shelled 
 corn as husked. 
 
 r 
 
 cr 
 
 S 
 p n 
 
 
 g-8 
 
 G HI 
 
 Sc a 
 
 g 
 
 Q* p 
 
 -! 
 
 
 o 
 
 3 
 
 Lb. ear corn per bushel 
 as shelled. 
 
 r 
 p- 
 
 t-r >" 
 B* 
 
 If 
 
 ^, ** 
 
 
 
 5'CL 
 
 S-o 
 
 ^3 
 P 
 yr 
 n 
 
 Bu. shelled 
 corn per acre. 
 
 > 
 
 M 
 M 
 
 cr 
 a 
 
 T 
 a 
 
 > 
 1-1' 
 Pi 
 
 ^3 
 
 r 
 
 o 
 a 
 
 o) 
 
 5' 
 
 a 
 I 
 < 
 
 5" 
 
 op 
 
 2 
 
 3 
 4 
 6 
 
 7 
 8 
 
 10 
 
 ii 
 
 12 
 
 J 4 
 15 
 16 
 18 
 J 9 
 
 20 
 22 
 23 
 
 24 
 26 
 
 27 
 28 
 
 30 
 3i 
 32 
 34 
 35 
 36 
 38 
 39 
 40 
 42 
 43 
 44 
 46 
 
 47 
 48 
 
 50 
 5i 
 52 
 54 
 55 
 56 
 58 
 59 
 60 
 62 
 63 
 64 
 66 
 67 
 68 
 
 White corn (no name) 
 
 20.26 
 26.93 
 16.57 
 
 2O.2 
 23.l8 
 
 20.95 
 
 18.71 
 20.47 
 15.78 
 22.12 
 17.85 
 l8.7 7 
 21.25 
 18.67 
 22.82 
 19.07 
 
 18.35 
 18.51 
 
 20.53 
 
 26 59 
 24.9 
 22.18 
 18.7 
 
 1995 
 18.46 
 22.23 
 17.86 
 18.1 
 20.73 
 
 20.33 
 16.86 
 18.25 
 15-36 
 18.62 
 
 17-63 
 18.46 
 21.19 
 22.27 
 17-93 
 1833 
 18.64 
 17.87 
 23.78 
 22.15 
 17.19 
 18.19 
 24.06 
 18.52 
 20.18 
 1681 
 20.33 
 
 4590 
 4090 
 3980 
 3500 
 5250 
 3330 
 
 3020 
 
 3980 
 4510 
 2930 
 2810 
 3880 
 3460 
 
 2460 
 
 3590 
 3300 
 
 4220 
 
 4580 
 4920 
 3380 
 
 4460 
 
 4920 
 
 4610 
 5060 
 
 5460 
 
 5200 
 4180 
 
 4910 
 5930 
 6540 
 
 5210 
 
 3690 
 4820 
 5750 
 5840 
 
 6030 
 7160 
 
 7400 
 6830 
 5810 
 6850 
 3510 
 4740 
 
 6140 
 3610 
 
 7310 
 7570 
 3650 
 5670 
 4320 
 
 6940 
 
 7i-3 
 75 9 
 67-3 
 71-5 
 72.3 
 70.9 
 71.8 
 69.4 
 66 
 
 75-5 
 69.8 
 69.4 
 70.1 
 69.1 
 68.8 
 67.9 
 71.2 
 67 5 
 70 
 75-3 
 70.8 
 
 7i-5 
 68.2 
 68.1 
 68.8 
 70 
 67.6 
 66.9 
 70 
 68 i 
 
 67 
 68 
 
 65 9 
 68.3 
 69.1 
 70.2 
 
 70-3 
 
 72.7 
 68.9 
 68.5 
 
 69-3 
 68.9 
 66.9 
 67.7 
 
 65 
 68.3 
 71.6 
 67.4 
 69.6 
 
 67-3 
 71.8 
 
 79-5 
 92.4 
 71.8 
 
 79-7 
 83.8 
 79-8 
 78.5 
 77-7 
 69.8 
 86.3 
 
 75-5 
 76 
 
 79-4 
 75-6 
 79-5 
 74-7 
 77-7 
 73-8 
 78.4 
 9i 3 
 83-9 
 81.8 
 
 74-6 
 75.6 
 75-1 
 80. i 
 
 73-3 
 
 72.7 
 78.8 
 76.6 
 71.8 
 
 74 
 69.2 
 
 74-7 
 74-7 
 76.6 
 
 79-4 
 83.2 
 
 74-7 
 74 7 
 75-8 
 74-7 
 78.1 
 
 77-4 
 69.8 
 
 74-3 
 839 
 73-7 
 77-7 
 72 
 80.2 
 
 64.4 
 
 53-9 
 59 i 
 49 
 72.6 
 
 47 
 42.1 
 
 57-3 
 68.3 
 38.8 
 4-3 
 55-9 
 49-3 
 356 
 52.1 
 48.6 
 59-2 
 67.8 
 7-3 
 44 9 
 63 
 68.8 
 67.6 
 74-4 
 79-3 
 74-3 
 61.8 
 
 73-4 
 84 6 
 96 
 77-7 
 54-3 
 73-2 
 84.2 
 84-5 
 85.9 
 101.8 
 101.8 
 99-2 
 84.8 
 98.8 
 50.9 
 
 70.9 
 90.7 
 55-6 
 107 
 105.7 
 
 54-i 
 81.4 
 64.2 
 96.7 
 
 57-7 
 44-3 
 55 4 
 43 9 
 62.7 
 41.8 
 38.5 
 5L2 
 64.6 
 34 
 37 2 
 5i 
 43-6 
 32.5 
 45 2 
 44-2 
 54-3 
 62.1 
 62 8 
 
 37 
 53 2 
 60.2 
 61.8 
 66.9 
 72.7 
 64.9 
 
 57 
 67.6 
 75.2 
 85.4 
 72.6 
 
 499 
 69.6 
 
 77 
 78.2 
 78.7 
 90.2 
 88.9 
 9i.5 
 77-8 
 90.3 
 47 
 60.7 
 
 79-3 
 5i-7 
 98.4 
 90.2 
 49-5 
 73 
 60 
 86.6 
 
 6-7 
 9.6 
 
 3-7 
 5-i 
 9-9 
 
 5-2 
 
 3-6 
 6.1 
 
 3-7 
 4 .8 
 
 3i 
 4-9 
 
 5-7 
 3i 
 6-9 
 4-4 
 4-9 
 5-7 
 7-5 
 7-9 
 9-8 
 8.6 
 5.8 
 7-5 
 6.6 
 
 94 
 4.8 
 
 5-8 
 
 94 
 10.6 
 
 5-i 
 4-4 
 3-6 
 
 7.2 
 
 6-3 
 7.2 
 ii. 6 
 12.9 
 7-7 
 7 
 8.5 
 
 3.9 
 
 IO.2 
 II.4 
 
 3-9 
 
 8.6 
 
 15-5 
 4.6 
 
 8-4 
 42 
 
 10. I 
 
 Helms improved 
 
 White beauty . 
 
 Boone Co. white 
 
 White corn (no name) 
 
 Dunlap's white 
 
 Burr's white 
 
 Forsy th's white 
 
 Van's early 
 
 First premium 
 
 Mills Co. white 
 
 Champion white pearl 
 
 Arleus 
 
 Steward's improved 
 
 Fisk's yellow 
 
 
 Hdmonds .... 
 
 Learning 
 
 Riley ' s favorite 
 
 Yellow corn (no name) 
 
 Star 
 
 Champion yellow dent 
 
 Mortgage lifter 
 
 Reid's yellow dent 
 
 Cuban queen 
 
 Waterloo extra early 
 
 Legal tender , .... 
 
 Learning 
 
 John Cloud ... 
 
 Yantis 
 
 Sterling 
 
 Pride of Columbia 
 
 Davis improved.... . . 
 
 J. J. Freeland 
 
 Burr's white 
 
 Boone Co. white 
 
 Charles Cloud 
 
 Waggoner 
 
 Calico 
 
 Mixture (a) 
 
 Mixture (3) 
 
 Burr's white-cranberry cross 
 
 Learning-Burr's white cross 
 
 Hickory king-Helms improved cross. 
 Champion w. pearl-cranberry cross. 
 Boone Co. white 
 
 Burr's white 
 
 Kdmonds Burr's white cross 
 
 Edmonds-Murdock cross 
 
 Learning Edmonds cross 
 
 Boone Co. white 
 
BULLETIN NO. 37. 
 
 \_March, 
 
 VARIETY TESTS, YIELD, 1894. Continued. 
 
 
 
 ^ 
 
 0> 
 
 r 
 
 cr 
 
 r 
 
 cr 
 
 cr 
 
 Bu. shelled 
 
 
 
 80 
 0) 
 
 T) 
 
 0) 
 
 cr p 
 
 corn per acre. 
 
 
 
 y ti 
 
 P n 
 
 en n 
 
 w ^ 
 
 CO 
 
 cr cr 
 
 
 
 t- 
 
 d 
 
 
 g i 
 
 crS 
 
 cro 
 
 CD C 
 
 ^ 
 
 
 o 
 
 sT 
 
 Name of Variety. 
 
 cr a 
 
 |3 
 
 l 
 
 
 en 
 en 
 
 
 
 
 
 
 en S' 
 
 w o 
 
 Ct U) 
 
 CL cr 
 
 2 en 
 
 CL p 
 i-t 
 
 S-* 
 
 1 
 
 "I O 
 
 D* 
 
 CL 
 -I 
 
 3 
 
 
 
 0> 
 
 
 
 p 
 
 ' 3 
 
 
 
 5 
 
 
 
 ST 
 
 1-1 
 
 o 
 
 p 
 
 
 
 GTQ 
 
 
 
 CL 
 
 D 
 
 3 
 
 n> 
 
 
 
 
 70 'WTivtiirA (d\ . . 
 
 21.83 
 
 5880 
 
 69 6 
 
 7Q 2 
 
 84 S 
 
 74 3 
 
 IO 2 
 
 71 
 
 Golden beauty-Learning cross 
 
 20.08 
 
 5820 
 
 6Q.4 
 
 77. 3 
 
 80 q 
 
 72 7 
 
 8.2 
 
 
 Learning golden beauty cross . 
 
 20 08 
 
 6500 
 
 67 i 
 
 74 7 
 
 Q6 Q 
 
 87 
 
 Q Q 
 
 74 
 
 Early mastodon 
 
 19- S6 
 
 SI4O 
 
 68 
 
 7S 2 
 
 7S 6 
 
 68 3 
 
 7. a 
 
 7S 
 
 Minnesota king . 
 
 iS-88 
 
 2Q3O 
 
 7o 3 
 
 74 4 
 
 
 3Q 4 
 
 2.1 
 
 76 
 
 Huron 
 
 IS 7Q 
 
 4S4O 
 
 66 8 
 
 7O 6 
 
 67 Q 
 
 64 3 
 
 3 6 
 
 78 
 
 White corn (no name) 
 
 2O. OI 
 
 55OO 
 
 71-7 
 
 79.7 
 
 76 7 
 
 69 
 
 7-7 
 
 7Q 
 
 Queen of the prairie 
 
 22.22 
 
 39IO 
 
 7?. 3 
 
 83.8 
 
 5^ 4 
 
 46.7 
 
 6.7 
 
 So 
 
 White corn (no name) 
 
 20.69 
 
 376s 
 
 71 7 
 
 80 S 
 
 52. S 
 
 46.8 
 
 S-7 
 
 8oa 
 
 The conqueror 
 
 22 SI 
 
 477O 
 
 
 8l 9 
 
 66 8 
 
 s8.3 
 
 8.5 
 
 8? 
 
 Burr's white 
 
 17 2Q 
 
 S48o 
 
 7O Q 
 
 76 3 
 
 77 3 
 
 71.8 
 
 5-S 
 
 84 
 
 Boone Co. white 
 
 19 27 
 
 5020 
 
 71.2 
 
 78.5 
 
 70.5 
 
 64 
 
 6-5 
 
 Plats below injured by chinch bugs. 
 
 I 
 
 Boone Co. white 
 
 20.31 
 
 2880 
 
 67.0 
 
 75.8 
 
 42.4 
 
 38 
 
 4.4 
 
 5 
 
 Burr's white 
 
 20. 01 
 
 3300 
 
 70.7 
 
 78.6 
 
 46.7 
 
 42 
 
 4.7 
 
 q 
 
 Iowa king 
 
 20.8-5 
 
 2820 
 
 76 
 
 85.4 
 
 37. i 
 
 33 
 
 4.1 
 
 T 3 
 
 Short stalk 
 
 19.09 
 
 3160 
 
 7 
 
 77 
 
 45.1 
 
 41.1 
 
 4 
 
 17 
 
 Golden beauty 
 
 22 S 
 
 2620 
 
 72.1 
 
 82.9 
 
 36.3 
 
 31.6 
 
 4-7 
 
 21 
 
 Clark's Iroquois 
 
 22 08 
 
 34SO 
 
 68 i 
 
 77 8 
 
 so 6 
 
 44- 3 
 
 6.3 
 
 25 
 
 California yellow 
 
 18.18 
 
 398O 
 
 66.8 
 
 72.7 
 
 59.6 
 
 54-8 
 
 1 
 
 2Q 
 
 B. O. E. Ensilage 
 
 18.46 
 
 347O 
 
 70 
 
 76 4 
 
 49.6 
 
 45-4 
 
 4.2 
 
 33 
 
 Yellow corn (no name) ... 
 
 I4.l8 
 
 25OO 
 
 63.7 
 
 66.1 
 
 39-3 
 
 37.9 
 
 1.4 
 
 37 
 
 Crowder 
 
 24.51 
 
 4660 
 
 68.2 
 
 80.4 
 
 68.4 
 
 58 
 
 10.4 
 
 41 
 
 Champion white pearl 
 
 18.39 
 
 4370 
 
 6q 4 
 
 75-6 
 
 63 
 
 57.9 
 
 5.1 
 
 45 
 
 4Q 
 
 Champion white pearl (smooth) 
 Storm . ... 
 
 17.62 
 l8 Q7 
 
 5300 
 C4IO 
 
 68.3 
 70 i 
 
 73-7 
 
 77 
 
 77-6 
 77.2 
 
 71.9 
 70.3 
 
 5-7 
 6-9 
 
 S3 
 
 White corn (no name) 
 
 IQ O4 
 
 4640 
 
 67.0 
 
 74.7 
 
 68.3 
 
 62.1 
 
 6 ? 
 
 57 
 
 Boone Co. white 
 
 1 8 OQ 
 
 38^0 
 
 68.3 
 
 74.2 
 
 56.1 
 
 51.6 
 
 4-5 
 
 61 
 
 Burr's white 
 
 18 9 
 
 4^6O 
 
 7O.4 
 
 77- 3 
 
 61.9 
 
 56.4 
 
 5-5 
 
 6S 
 
 Murdock-Burr's white cross 
 
 20 19 
 
 44IO 
 
 68.4 
 
 76.3 
 
 64.5 
 
 57-8 
 
 6.7 
 
 60 
 
 Mixture (c) 
 
 18.77 
 
 287O 
 
 71.8 
 
 78.7 
 
 4 
 
 36.5 
 
 3-5 
 
 73 
 
 Mastodon 
 
 18.66 
 
 3O2O 
 
 69.1 
 
 75-6 
 
 43.7 
 
 4 
 
 3 7 
 
 77 
 
 Murdock -' 
 
 20.79 
 
 394 
 
 72.9 
 
 81.9 
 
 54 
 
 48.1 
 
 59 
 
 in 1894, there has been an average of from four-fifths to seven-eighths of 
 a full stand, reckoning four stalks in each hill as a full stand. In 1893, 
 however, the stand was more nearly perfect, it being over 93 per cent. 
 The better stand was due to the fact that the corn was planted thicker 
 than usual, and afterwards thinned to four plants a hill. 
 
 For 1888, 1890, 1891, 1892, and 1894 the per cent, of barren stalks 
 was comparatively uniform, averaging about eleven; while in 1889 it 
 dropped to about 1.5 per cent., and in 1893 went up to 22, 23, and 50 
 per cent, for the three classes, early, medium, and late, respectively. 
 Only one variety was classed as late, and it has made some very good 
 
1895-] 
 
 FIELD EXPERIMENTS WITH CORN, 1894. 
 
 yields in former years. The noticeable barrenness in 1893, was prob- 
 ably due, chiefly, to the severe drought and the fact that the corn was 
 planted thicker than formerly. 
 
 Though varying much from year to year, owing to the nature of 
 the season, in general the height of both stalks and ears increased with 
 lateness of maturity, as did also the length and circumference of ears. 
 
 In four out of the seven years the weight of 100 average ears has 
 been greatest for the late maturing, and for the other three greatest for 
 the medium. In general, the number of ears per acre has decreased with 
 the lateness of maturing. The pounds of ear corn, as weighed when 
 husked, which must be taken to make a bushel of air-dry shelled corn, 
 invariably increase with the lateness of maturity. This is due largely to 
 the fact that the per cent, of water is greater in the late maturing vari- 
 eties when husked. 
 
 YIELD OF AIR-DRY CORN OF VARIETIES TESTED FOR YEARS NAMED. 
 
 Eight varieties tested in 1887 
 
 1888 
 
 1889 
 
 1890 
 
 1891 
 
 1892 
 
 1893 
 
 1894 
 
 Av. 
 
 Learning 29.6 
 
 86 6 
 
 80.6 
 
 69.4 
 
 67. 3 
 
 70. i 
 
 34 6 
 
 62 i 
 
 62 5 
 
 Burr's white 30 
 
 85 9 
 
 75.7 
 
 67.7 
 
 67 .7 
 
 64. 2 
 
 38 6 
 
 60 7 
 
 62 4 
 
 Champion white pearl 20.2 
 
 7 
 
 94.8 
 
 74.9 
 
 76.5 
 
 65 
 
 37. 3 
 
 51 
 
 6l 2 
 
 Riley's favorite 30.8 
 
 81.8 
 
 66.1 
 
 53-3 
 
 56.1 
 
 74. 1 
 
 38 i 
 
 62 8 
 
 57 Q 
 
 Legal tender 25.8 
 
 84.2 
 
 68.9 
 
 60 
 
 56.8 
 
 60. 3 
 
 33.8 
 
 57 
 
 55 8 
 
 Steward's improved 32 . 4 
 
 91 .2 
 
 68.7 
 
 54 7 
 
 58 4 
 
 74 4 
 
 33 
 
 32 5 
 
 55 7 
 
 Murdock. ... 33 3 
 
 80.3 
 
 65 
 
 61.6 
 
 59 8 
 
 57 .6 
 
 35 7 
 
 48 I 
 
 55 2 
 
 Edmonds " 27 . 7 
 
 83.7 
 
 66.3 
 
 55-9 
 
 58.6 
 
 58.4 
 
 28.3 
 
 54-3 
 
 54-1 
 
 Eleven varieties tested in 
 
 1888 
 
 1889 
 
 1890 
 
 1891 
 
 1892 
 
 1893 
 
 1894 
 
 Av. 
 
 Learning. . 
 
 86.6 
 
 80.6 
 
 69.4 
 
 67.3 
 
 70. I 
 
 34.6 
 
 62 i 
 
 67 2 
 
 Burr's white 
 
 8s 
 
 yc 7 
 
 67.7 
 
 67 7 
 
 64 2 
 
 38 6 
 
 60 7 
 
 67 I 
 
 Champion white pearl 
 
 70 
 
 94.8 
 
 74.9 
 
 76.5 
 
 65 
 
 37 - 3 
 
 51 
 
 67 I 
 
 Riley's favorite 
 
 83.7 
 
 66.3 
 
 55 9 
 
 58.6 
 
 74. 1 
 
 38.1 
 
 62 8 
 
 62 8 
 
 Clark's Iroquois 
 
 68.5 
 
 81.9 
 
 59 
 
 65.4 
 
 72.9 
 
 30.7 
 
 44 3 
 
 60 4 
 
 Legal tender 
 
 84.2 
 
 68.7 
 
 60 
 
 56.8 
 
 60. 3 
 
 33.8 
 
 57 
 
 60 I 
 
 Helms improved 
 
 84.8 
 
 IO2 .6 
 
 51 . i 
 
 39 
 
 79 .2 
 
 16 
 
 44 . 3 
 
 50 6 
 
 Steward's improved 
 
 91 .2 
 
 68.7 
 
 54 7 
 
 58.4 
 
 74 .4 
 
 33 
 
 32. 5 
 
 50 
 
 Murdock 
 
 80.3 
 
 65 
 
 61.6 
 
 59.8 
 
 57.6 
 
 35-7 
 
 48.1 
 
 58 3 
 
 Fisk's yellow 
 
 76 6 
 
 79. $ 
 
 61.7 
 
 57.4 
 
 61.1 
 
 19. 5 
 
 45 .2 
 
 57 3 
 
 Edmonds 
 
 81.1 
 
 66.1 
 
 53-3 
 
 56.1 
 
 58.4 
 
 28.3 
 
 54-3 
 
 56.8 
 
 Thirteen varieties tested i 
 
 a 
 
 
 1890 
 
 1891 
 
 1892 
 
 1893 
 
 1894 
 
 Av. 
 
 Boone county white 
 
 
 
 74.6 
 
 89.3 
 
 85 5 
 
 33.8 
 
 74 3 
 
 71. 5 
 
 Burr's white . . . . 
 
 
 
 67.7 
 
 67 7 
 
 64.2 
 
 38 6 
 
 6q.7 
 
 61 6 
 
 Champion white pearl 
 
 
 
 74.9 
 
 76.5 
 
 65 
 
 37.3 
 
 51 
 
 60.9 
 
 Learning 
 
 
 
 69.4 
 
 67.3 
 
 70. 1 
 
 34-6 
 
 62.1 
 
 60.7 
 
 Riley' s favorite 
 
 
 
 55-9 
 
 58.6 
 
 74.1 
 
 38.1 
 
 62.8 
 
 57 .9 
 
 Clark's Iroquois 
 
 
 
 59 
 
 65.4 
 
 72.9 
 
 30.7 
 
 44 3 
 
 54. 5 
 
 Legal tender 
 
 
 
 60 
 
 56.8 
 
 60.3 
 
 33-8 
 
 57 
 
 53.6 
 
 Murdock 
 
 
 
 61.6 
 
 59-8 
 
 57 -6 
 
 35.7 
 
 48.1 
 
 52 .6 
 
 Golden beauty 
 
 
 
 53 
 
 75-8 
 
 63.1 
 
 36.4 
 
 31.6 
 
 52 
 
 Steward's improved 
 
 
 
 54-7 
 
 58.4 
 
 74 .4 
 
 33 
 
 J 
 32.5 
 
 50.6 
 
 Edmonds 
 
 
 
 53. 3 
 
 56.1 
 
 58.4 
 
 28.3 
 
 Ma 
 
 50 i 
 
 Fisk's yellow , 
 
 
 
 61 .7 
 
 57.4 
 
 60. i 
 
 IQ. $ 
 
 452 
 
 48 8 
 
 Helms improved 
 
 
 
 ' 
 51.1 
 
 39 
 
 79-2 
 
 16 
 
 44-3 
 
 45-9 
 
16 BULLETIN NO. 37. [March, 
 
 Each year, excepting 1892, the medium maturing varieties have 
 made the largest average yields, the average of air-dry shelled corn for 
 the seven years being as follows: Medium, 65.2 bu. ; late, 58.8 bu.; and 
 early, 55.5 bu. per acre. 
 
 The following table gives the yield for each of eight varieties for 
 eight years, of eleven for seven years, and of thirteen for five years, 
 arranged in the order of the average yields. Of these varieties, Boone 
 Co. white, champion white pearl, Burr's white, and Helms improved, 
 are white; the others are yellow. Murdock and Edmonds are early 
 maturing, Helms improved, late, and the others, medium. The average 
 yield of the eleven varieties for seven years is 61.4 bu. per acre. Other 
 varieties of considerable merit, that have been tested for four or more 
 years, are Dunlap's white, Clark's Onarga, and California yellow. 
 
 It should be noticed that the average yield of Boone Co. white for 
 five years is almost ten bushels more than for the next best variety 
 tested during the same years. 
 
 A comparison of the white and yellow varieties for 1894 shows an 
 average yield of 63.2 bu. an acre for the white and 60 bu. for the yel- 
 low. The average yield per acre for seven years is 61.8 bu. for the 
 white, and 60.3 bu. for the yellow. 
 
 Experiment No j>, Corn, Time of Planting. 
 
 Experiments to test the effect of time of planting on yield and 
 growth have been conducted for the past seven years. The land used 
 in 1894 was in corn during 1893, in clover during 1892, and in oats dur- 
 ing 1891, The stalks were removed and the land plowed during the 
 fall of 1893. Each planting consisted of four plats, each 4 rods or 9 
 hills square, and each plat was planted with a different number of 
 kernels in a hill, the numbers being 2, 3, 4, and 5 kernels per hill. The 
 first four plats were planted April 26th, and four plats were planted 
 each week thereafter till June 22d, there being 36 plats in all. The 
 ground for each four plats was disked, smoothed and marked just 
 before planting. The variety of corn used was Burr's white, and it 
 was planted by hand in checks 3 feet 8 inches apart. Plantings i, 2, 
 and 6 were cultivated five times; 3, 4, 7, and 8, four times; and 5 and 9, 
 three times. The cultivation was done with surface cultivators, and the 
 remaining weeds removed with a hoe. Beginning June i5th, the 
 height of each plant of two rows running across the nine plantings was 
 measured each week during its growth. The average weekly height 
 in inches to tip of tassel and upstretched leaf for each planting is given 
 in the table. 
 
 The east third of each plat was used in a feeding experiment before 
 it came to full maturity. The remaining two-thirds were husked in the 
 usual way, the number of ears and weight being ascertained for each 
 
FIELD EXPERIMENTS WITH CORN, 1894. 
 
 third. The middle third of each plat was shelled and a sample of the 
 shelled corn sent to the laboratory for determination of moisture. 
 
 The largest yield of air-dry corn is from planting May nth, with 
 nearly as good results from planting May 4th, i8th, and 25th. Taking 
 the average of six years, the largest yield is from planting May nth to 
 i8th, with but little decrease in yield from planting any time from 
 April 27th to May 25th. Corn planted May 25th matured in 118 days. 
 This is less time than required by either earlier or later planting. This, 
 together with the fact that the first three plantings reached their max- 
 imum height about the same time, shows the more rapid growth of 
 corn planted later in the season, when the ground is warm, over that 
 planted earlier, when the ground is cold. 
 
 By very early planting, if a good stand is secured and the corn 
 kept equally free from weeds, we may expect as large yields as from 
 later planting. But for this locality the extra labor required to remove 
 the weeds and the risk of a poor stand will not justify planting earlier 
 than about May ist. 
 
 AVERAGE HEIGHTS TAKEN WEEKLY IN INCHES TO TIP OF TASSEL AND LEAF, 1894. 
 
 Date of 
 plant- 
 ing. 
 
 Apr. 26 
 May 4- 
 May ii 
 May 18- 
 May 25 
 June i 
 June 8 
 June 15 
 June 22 
 
 
 
 une 
 
 
 
 JL 
 
 iy 
 
 
 
 
 Aug. 
 
 
 
 
 Sep 
 
 
 O 
 
 :t. 
 
 
 15 
 
 23 
 
 29 
 
 6 
 
 13 
 
 20 
 
 27 
 
 3 
 
 10 
 
 17 
 
 24 
 
 31 
 
 14 
 
 21 
 
 28 
 
 5 
 
 12 
 
 Leaf 
 
 26 
 
 
 60 
 
 
 86 
 
 
 
 
 
 
 
 
 90 
 
 
 
 
 
 
 
 
 
 
 
 8H 
 
 
 
 
 
 92 
 
 92 
 
 91 
 
 
 
 
 
 Leaf 
 
 
 28 
 
 
 S6 
 
 6q 
 
 83 
 
 80 
 
 
 
 
 
 
 88 
 
 
 
 
 
 Tassel 
 
 
 
 
 
 
 
 87 
 
 8q 
 
 
 
 
 
 8-7 
 
 
 
 
 
 Leaf 
 
 13 
 
 29 
 
 43 
 
 57 
 
 70 
 
 a 
 
 
 
 
 
 95 
 
 96 
 
 93 
 
 92 
 
 
 
 
 
 
 
 
 
 
 f>\ 
 
 K 5 
 
 
 
 93 
 
 93 
 
 93 
 
 93 
 
 92 
 
 
 
 
 Leaf 
 
 
 
 3 s 
 
 
 67 
 
 80 
 
 
 96 
 
 98 
 
 
 
 
 97 
 
 96 
 
 
 
 
 Tassel . 
 
 
 
 
 
 
 68 
 
 80 
 
 
 98 
 
 98 
 
 97 
 
 97 
 
 97 
 
 97 
 
 
 
 
 Leaf 
 
 10 
 
 21 
 
 34 
 
 is 
 
 61 
 
 75 
 
 85 
 
 
 97 
 
 98 
 
 08 
 
 08 
 
 97 
 
 95 
 
 95 
 
 
 
 Tassel 
 
 
 
 
 
 
 60 
 
 74 
 
 92 
 
 95 
 
 06 
 
 06 
 
 06 
 
 95 
 
 95 
 
 06 
 
 
 
 Leaf 
 Tassel 
 
 6 
 
 9 
 
 16 
 
 25 
 
 35 
 
 47 
 
 56 
 
 55 
 
 7i 
 6 1 
 
 8 1 
 76 
 
 87 
 
 87 
 
 89 
 91 
 
 90 
 93 
 
 9i 
 92 
 
 9i 
 92 
 
 89 
 93 
 
 87 
 93 
 
 
 Leaf 
 
 
 7 
 
 13 
 
 23 
 
 31 
 
 42 
 
 51 
 
 66 
 
 76 
 
 8-7 
 
 92 
 
 93 
 
 93 
 
 92 
 
 93 
 
 93 
 
 80 
 
 Tassel 
 
 
 
 
 
 
 
 
 fir 
 
 68 
 
 81 
 
 93 
 
 95 
 
 95 
 
 95 
 
 9i 
 
 95 
 
 9> 
 
 Leaf 
 
 
 
 5 
 
 
 17 
 
 24 
 
 31 
 
 
 
 72 
 
 86 
 
 95 
 
 97 
 
 06 
 
 06 
 
 
 8r> 
 
 Tassel 
 
 
 
 
 
 
 
 
 
 44 
 
 6r 
 
 81 
 
 94 
 
 08 
 
 08 
 
 IOO 
 
 99 
 
 o-i 
 
 Leaf 
 
 
 
 2 
 
 8 
 
 12 
 
 16 
 
 21 
 
 30 
 
 37 
 
 5 
 
 6] 
 
 76 
 
 R 1 
 
 84 
 
 81 
 
 82 
 
 8r> 
 
 Tassel 
 
 
 
 
 
 
 
 
 
 
 
 45 
 
 72 
 
 85 
 
 86 
 
 86 
 
 86 
 
 83 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 RESULTS WITH CORN FROM PLANTING AT DIFFERENT DATES, iSS8-i8g|. 
 
 Bu. air-dry corn per arre. 
 
 
 1888 
 
 1889 
 
 1890 
 
 1891. 
 
 1892. 
 
 i8 9J 
 
 1894 
 
 Av. 
 
 April 2226 
 
 
 52 
 
 
 si 
 
 
 
 58 
 
 54 
 
 April 27 May 4 
 
 80 
 
 41 
 
 67 
 
 5 
 
 72 
 
 
 60 
 
 62 
 
 May 4 1 1 
 
 87 
 
 51 
 
 71 
 
 48 
 
 7 
 
 47 
 
 61 
 
 62 
 
 " n 18 
 
 86 
 
 56 
 
 75 
 
 5 
 
 63 
 
 48 
 
 60 
 
 63 
 
 '' IQ 2=5 . 
 
 87 
 
 50 
 
 71 
 
 52 
 
 66 
 
 40 
 
 61 
 
 61 
 
 1 ' 26 June i 
 
 83 
 
 55 
 
 74 
 
 34 
 
 59 
 
 37 
 
 40 
 
 e. 15 
 
 June i 8 
 
 Si 
 
 5 
 
 61 
 
 37 
 
 68 
 
 34 
 
 42 
 
 53 
 
 " 815 
 
 5 
 
 5 
 
 60 
 
 19 
 
 49 
 
 38 
 
 21 
 
 41 
 
 " 17 22 
 
 
 
 
 
 30 
 
 22 
 
 12 
 
 21 
 
i8 
 
 BULLETIN NO. 37. 
 
 [March, 
 
 RESULTS WITH CORN FROM PLANTING AT DIFFERENT RATES AND DATES. 
 
 
 
 * 
 
 
 
 H3 
 
 r 
 
 cr 
 
 cr 
 
 r 
 
 cr 
 
 Bu. shelled corn per 
 
 
 
 CD 
 
 
 
 S 
 
 
 
 
 acre. 
 
 
 P 
 
 1 
 
 2L 
 
 
 
 o ^ 
 
 
 *1 CD 
 
 CD 
 P 
 
 CD 
 
 H. P 
 
 
 
 
 
 
 
 
 P P 
 
 
 -1 
 
 -I -t 
 
 
 
 
 2 
 
 CD" 
 
 o 
 
 T5 
 
 cr 
 
 n 
 
 
 cr 
 
 09 
 
 go 
 
 ci M 
 
 
 
 r 1 
 
 sT 
 
 l-h 
 
 1 
 
 CD 
 
 P 
 
 O 
 
 cr 
 
 CD ju 
 
 C 1-1 
 
 - D 
 
 jf 
 
 *< 
 to" 
 
 En 
 
 > 
 
 (ji 
 
 H 
 
 o 
 
 P" 
 
 0. 
 
 2. 
 
 H 
 
 CD 
 
 cr 1-1 
 
 CL^ 
 
 CD" 3 
 
 erg 
 
 en 
 D- 
 
 q- 
 
 a 
 
 
 P 
 
 n 
 
 * 
 
 CD 
 
 c -. 
 
 en p 
 
 1-1 
 
 (D 
 
 ST" ** 
 
 
 a 
 
 Cu 
 
 
 M 
 
 CD 
 
 
 P 
 
 X" 
 
 P 
 
 
 Qj ^ 
 
 fD 
 
 Sji 
 
 i"S 
 
 
 crq 
 
 "1 
 
 
 
 S, cr 
 
 
 
 ~i 
 
 Cn 
 
 (_ 
 
 a, 
 
 . 
 
 . 
 
 
 
 cr 
 
 
 
 <L 
 
 CD 
 
 O* 
 
 CTi 
 
 
 
 Ji 
 
 
 
 ^* 
 
 
 
 CD* 
 
 P 
 01 
 
 p 5 
 
 5^ 
 
 
 
 
 ^ 
 
 
 5 
 
 
 Oct. 15 
 
 19. 6 
 
 4980 
 
 70 4 
 
 77-9 
 
 70.7 
 
 63 9 
 
 68 
 
 3 ^ 
 
 Apr. 26 
 
 4 
 3 
 
 Sept. ii 
 
 " 16 
 " 15 
 
 17-51 
 18.79 
 
 4335 
 4560 
 
 68 7 
 70 5 
 
 74- * 
 77.2 
 
 63 i 
 64.7 
 
 585 
 59 
 
 4.6 
 
 5-7 
 
 4J 
 
 
 2 
 
 
 15 
 
 19 82 
 
 3945 
 
 70 8 
 
 78.6 
 
 55 7 
 
 50.2 
 
 5 5 
 
 5] 
 
 
 5 
 
 
 " 16 
 
 22.08 
 
 5760 
 
 71.4 
 
 81.6 
 
 80.6 
 
 70 6 
 
 10 
 
 6 
 7 
 
 May 4 
 
 4 
 3 
 
 Sept. 14 
 
 " 16 
 " 16 
 
 21-5 
 
 21.22 
 
 4740 
 4725 
 
 72.2 
 72 
 
 8-1.8 
 81.3 
 
 65 7 
 65.7 
 
 57 9 
 
 7.8 
 76 
 
 S J 
 
 
 2 
 
 
 " 16 
 
 21.29 
 
 4290 
 
 72-3 
 
 81.7 
 
 59-3 
 
 52-5 
 
 6.8 
 
 9l 
 
 
 5 
 
 
 " 19 
 
 2094 
 
 4995 
 
 71 4 
 
 80.3 
 
 70 
 
 62.2 
 
 7.8 
 
 ! 
 
 May ii 
 
 4 
 3 
 
 Sept. 17 
 
 19 
 19 
 
 20.74 
 21 07 
 
 5235 
 4995 
 
 71-4 
 71.9 
 
 80.2 
 81 
 
 73 3 
 69 5 
 
 653 
 61.6 
 
 8 
 79 
 
 12 J 
 
 
 2 
 
 
 19 
 
 18.93 
 
 4305 
 
 71-5 
 
 78.5 
 
 60 2 
 
 54-9 
 
 5 3 
 
 13 "] 
 
 
 5 
 
 
 19 
 
 24 06 
 
 5130 
 
 73 7 
 
 86.3 
 
 69.6 59.4 
 
 10.2 
 
 15^ 
 
 May 1 8 
 
 4 
 3 
 
 Sept. 20 
 
 11 19 
 19 
 
 23.26 
 
 22 97 
 
 5250 
 5385 
 
 72-5 
 
 859 
 83 8 
 
 70.9 
 
 74 2 
 
 61.1 
 
 64.2 
 
 9 8 
 10 
 
 16 J 
 
 
 2 
 
 
 19 
 
 22.97 
 
 4710 
 
 718 
 
 82.9 
 
 656 
 
 se.8 
 
 8.8 
 
 17 1 
 
 18 
 19 f 
 
 May 25 
 
 5 
 4 
 3 
 
 Sept. 20 
 
 Nov. 12 
 
 " 12 
 " 12 
 
 21.71 
 19.16 
 
 1991 
 
 4800 
 4980 
 4800 
 
 69.7 
 69.7 
 71.1 
 
 79 .2 
 767 
 79 .1 
 
 68.9 
 67.5 
 
 60.6 
 64.9 
 
 60 7 
 
 8-3 
 6 6 
 6.8 
 
 20 j 
 
 
 2 
 
 
 " 12 
 
 19.04 
 
 4455 
 
 70.2 
 
 77-2 
 
 63 4 
 
 57-7 
 
 5-7 
 
 21 1 
 
 
 5 
 
 
 " 12 
 
 25.98 
 
 4095 
 
 75-7 
 
 91 
 
 54.1 
 
 45 
 
 9.1 
 
 23^ 
 
 June i 
 
 4 
 3 
 
 Oct. 2 
 
 " 12 
 " 12 
 
 23.61 
 
 25.79 
 
 3825 
 3435 
 
 74.8 
 
 864 
 89 8 
 
 51-6 
 45 9 
 
 44-3 
 38.3 
 
 7-3 
 7.6 
 
 24 J 
 
 
 2 
 
 
 " 12 
 
 24.07 
 
 2670 
 
 73-4 
 
 86.1 
 
 36.4 
 
 31 
 
 5-4 
 
 25 
 
 
 5 
 
 
 Dec. 3 
 
 2385 
 
 3315 
 
 75 .2 
 
 878 
 
 44.1 
 
 37 7 
 
 6.4 
 
 26 ! 
 27 f 
 
 June 8 
 
 4 
 3 
 
 Oct. 2 
 
 3 
 
 3 
 
 21.71 
 22.35 
 
 4230 
 3585 
 
 71.2 
 73-6 
 
 8! 
 
 84.4 
 
 59 4 
 48.7 
 
 52 2 
 
 42.5 
 
 7.2 
 
 6.2 
 
 28 J 
 
 
 2 
 
 
 3 
 
 21.09 
 
 2850 
 
 73 i 
 
 82.5 
 
 39 
 
 34-5 
 
 4-5 
 
 29 } 
 
 
 5 
 
 
 3 
 
 30 55 
 
 2115 
 
 82.6 
 
 I0 5-9 
 
 25.6 
 
 20 
 
 5-6 
 
 30 
 
 21 f 
 
 June 15 
 
 4 
 3 
 
 not ripe 
 
 ' . 3 
 3 
 
 3057 
 31.78 
 
 2775 
 1935 
 
 79-4 
 84.6 
 
 101.8 
 Ho-4 
 
 34 9 
 22.9 
 
 27-3 
 175 
 
 7.6 
 
 54 
 
 32 J 
 
 
 2 
 
 
 3 
 
 26.82 
 
 1770 
 
 80.6 
 
 98 
 
 22 
 
 18.1 
 
 3-9 
 
 331 
 
 
 5 
 
 
 3 
 
 37-4 
 
 1635 
 
 87-3 
 
 124 
 
 I8. 7 
 
 13.2 
 
 5-5 
 
 35 f 
 
 June 22 
 
 4 
 3 
 
 not ripe 
 
 3 
 3 
 
 33 77 
 
 1185 
 1530 
 
 89.2 
 93-9 
 
 121. 1 
 126.2 
 
 13 3 
 16.3 
 
 9.8 
 
 12. I 
 
 3.5 
 4 2 
 
 .36 j 
 
 
 2 
 
 
 3 
 
 32.96 
 
 1335 
 
 86.1 
 
 Ir 4-3 
 
 J 5,5. 
 
 ii 7 
 
 38 
 
 Experiment No. 4, Corn, Depth $j Planting. 
 
 This experiment was not conducted in 1894, the previous five years' 
 work being thought sufficient to demonstrate that shallow planting 
 gives best results, so long as the depth is sufficient to afford moisture to 
 germinate the seed. 
 
 The table in bulletin No. 31, giving results for five years, shows 
 that the average number of ears per acre uniformly decreases from the 
 shallowest to the deepest planting, and that in general, the bushels per 
 acre also decreases. 
 
1895-] FIELD EXPERIMENTS WITH CORN, 1894. IO, 
 
 Experiment No. 5, Corn, Thickness of Planting. 
 
 In 1894 the same plats used for the time planting were made to 
 serve also as a test for the thickness of planting. Each of the nine 
 plantings had four plats planted with the varying amounts of 2, 3, 4, and 
 5 kernels a hill. Out of the nine cases four plats gave the largest yield 
 for five kernels, four for four kernels, and one for three kernels. 
 
 The average yield per acre of air-dry shelled corn was as follows: 
 2 kernels, 40.8 bu.; 3 kernels, 46 bu. ; 4 kernels, 49 bu. ; 5 kernels, 
 48.1 bu. 
 
 In another field there were planted four plats of each of three varie- 
 ties, twelve plats in all, six being planted with three kernels a hill, and 
 six with four. The average yield was 44.6 bu. for three kernels and 
 50.5 bushels for four. In all cases the hills were in checks 3 ft. 8 inches 
 apart. This shows, as in former years, that there is less danger of get- 
 ting too many plants than of getting too few. Two reasons perhaps 
 why farmers do not get so large yields from thicker planting are, first, 
 because many of the nubbins are not husked at all, and second, because 
 the yields are usually determined by measurement rather than by weight, 
 and nubbins will largely oecupy space that would otherwise be unoccu- 
 pied between the large ears. 
 
 Experiment No. 6, Corn y Planting in Hills or Drills. 
 
 Experiment No. <?, Corn, Frequency of Cultivation. 
 
 Experiment No. g, Corn, Depth of Cultivation. 
 
 Experiment No. /0, Corn, Effect of Root-Pruning. 
 
 These four experiments were dropped this year, in the belief that the 
 work of the previous five years showed conclusively (i) that it makes- 
 little difference whether corn is planted in hills or drills so far as yields 
 are concerned, but that it will usually be best to plant in hills for the 
 sake of better cultivation; (2) that there seems to be no advantage in 
 cultivating more frequently than is necessary to destroy weeds and keep 
 the ground moderately porous; (3) that shallow cultivation has never 
 failed to produce an increase in yield over that of deep cultivation, the 
 average increase for five years being 5.9 bu. per acre; (4) that root-prun- 
 ing has never failed to reduce the yield in a marked degree, this reduc- 
 tion frequently amounting to 25 per cent. 
 
 Experiment No. 2j, Continuous Corn Cropping contrasted 'with a 
 Rotation of Crops. 
 
 This experiment has been continued as usual, and while in general 
 the yields of corn from the plat treated with barnyard manure have 
 been somewhat greater than those from the plats in rotation, and con- 
 siderably greater than from the plat continously cropped without any 
 manure, the yields of 1894. show an increase of 40 per cent, in favor of 
 
20 
 
 BULLETIN NO. 37. 
 
 [ March, 
 
 
 
 c 
 
 Stover, 
 Ib. 
 
 O O O O OOO * 
 
 
 
 c 
 
 Grain, 
 bu. 
 
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 the rotation plats. The manured plat 
 gave even less than the one without 
 manure. This can only be explained 
 by the drought, which seemed to affect 
 the manured plat most. 
 
 Experiment No. 89, Corn, 
 Cross fertilization. 
 
 The ten most promising crosses 
 selected from 1892 and grown in 1893 
 were again grown in 1894 on plats of 
 considerable size and at such distance 
 from each other as to prevent much 
 pollen being carried from one to an- 
 other. The diversity in the character 
 of the plats was such as to make a 
 comparison of the yields unfair. By 
 careful selection each is approaching 
 more nearly a uniform type. 
 
 These same ten crosses were plant- 
 ed in the variety test for the sake of 
 comparison of yields. The accom- 
 panying table gives the results of six 
 of them, the other four being omitted, 
 either because they fell in the row in- 
 jured by bugs, or because one of the 
 parent varieties was not grown with 
 which to compare it. The first named 
 variety is in each case the female 
 parent. This table gives the per cent, 
 of barren stalks, number of ears, and 
 yield per acre in bushels of air-dry corn 
 for each of the parent varieties, together 
 with their averages as compared with 
 the cross. In four out of the six cases 
 the yield is greatest for the cross, the 
 average increase being 12 bu. per acre. 
 In 1893 three out of four cases gave 
 largest yields for the cross, the average 
 increase being 2.3 bu. per acre; and in 
 1892 five crosses gave in every case a 
 larger yield than an average of the 
 parent varieties, the average increase 
 being 9.5 bu. per acre. 
 
1895.] 
 
 FIELD EXPERIMENTS WITH CORN, 1894. 
 
 21 
 
 Farmers can produce cross-bred seed in considerable quantities in 
 the following manner: Plant with one variety in one planter box and 
 another variety in the other. Remove the tassels of one variety before 
 they begin to shed pollen and the shoots of the same will be fertilized 
 with pollen from the other variety, thus producing a direct cross. The 
 seed should be selected from the rows from which the tassels have been 
 removed. 
 
 RESULTS FROM CROSS-BRED CORN. 
 
 
 
 Per cent. 
 
 Yield pei 
 
 acre. 
 
 Plat No. 
 
 
 of barren 
 stalks. 
 
 No. of 
 ears. 
 
 Per 
 cent, air- 
 dry corn. 
 
 
 Learning 
 
 
 8880 
 
 62 i 
 
 Av. 4 plats. 
 
 Burr's white 
 
 14 
 
 IOIOO 
 
 69.7 
 
 
 
 12 
 
 Q4QO 
 
 6s o 
 
 58 
 
 Cross 
 
 4 
 
 ingo 
 
 60.7 
 
 2 * 
 
 Edwards 
 
 6 
 
 QQ2O 
 
 M2 
 
 Av. 4 plats. 
 
 Burr's white 
 
 14 
 
 IOIOO 
 
 69.7 
 
 
 
 10 
 
 IOOIO 
 
 62 
 
 64 
 
 Cross 
 
 28 
 
 8960 
 
 49 5 
 
 2^ 
 
 Edwards 
 
 6 
 
 QQ2O 
 
 SI 3 
 
 77 
 
 Murdock 
 
 7 
 
 II52O 
 
 48.1 
 
 
 Average 
 
 6 
 
 IO72O 
 
 ci 2 
 
 66 
 
 Cross 
 
 12 
 
 I2O8O 
 
 73 
 
 24 
 
 Learning 
 
 
 8880 
 
 62.1 
 
 23 
 
 Edwards 
 
 6 
 
 9920 
 
 54-3 
 
 
 
 7 
 
 94OO 
 
 58.2 
 
 6 7 
 
 Cross 
 
 34 
 
 II36O 
 
 60 
 
 17 
 
 Golden beauty 
 
 8 
 
 6880 
 
 H.6 
 
 24 
 
 Learning 
 
 9 
 
 8880 
 
 62.1 
 
 
 
 8 
 
 7880 
 
 46.8 
 
 71 
 
 Cross 
 
 7 
 
 12760 
 
 72.7 
 
 24 
 
 Learning 
 
 9 
 
 8880 
 
 62.1 
 
 17 
 
 Golden beauty 
 
 8 
 
 6880 
 
 31-6 
 
 27 
 
 Average 
 
 8 
 
 7880 
 
 46.8 
 
 
 Cross . . 
 
 2 
 
 I208O 
 
 87 
 
 Experiment No. 134, Corn, Effect of Remaining Tassels. 
 
 The corn, variety Boone Co. white, used for this experiment, 
 consisted of twenty-four rows, each five rods long. The tassels were 
 removed from every alternate row. From six rows they were removed 
 before they were expanded, and from six after, but before the pollen 
 had been shed. From eight they were removed by cutting, and from 
 four by pulling. 
 
 The following table gives the number of stalks, good ears, nubbins, 
 weight of nubbins, weight of good ears, and total weight of ears for 
 each row. 
 
22 
 
 BULLETIN NO. 37. 
 TABLE GIVING RESULTS FROM DETASSELING. 
 
 [ 
 
 Row. 
 
 Number 
 of 
 stalks. 
 
 Number of 
 
 Weight of 
 
 Good 
 ears. 
 
 Nub- 
 bins. 
 
 Good 
 ears. 
 
 Nub- 
 bins. 
 
 Total. 
 
 i Tassels left on 
 
 183 
 181 
 169 
 194 
 172 
 165 
 182 
 174 
 173 
 165 
 179 
 225 
 194 
 189 
 
 200 
 195 
 159 
 164 
 171 
 165 
 I6 3 
 146 
 
 151 
 
 1 88 
 
 5i 
 82 
 61 
 72 
 55 
 75 
 59 
 61 
 
 47 
 69 
 65 
 57 
 63 
 65 
 74 
 85 
 77 
 96 
 
 77 
 87 
 81 
 66 
 80 
 73 
 
 7i 
 76 
 
 65 
 69 
 
 74 
 66 
 89 
 
 74 
 70 
 63 
 54 
 83 
 57 
 7i 
 52 
 56 
 39 
 38 
 43 
 42 
 38 
 45 
 44 
 65 
 
 27.8 
 
 47-5 
 31-8 
 36.8 
 31-5 
 41-5 
 30 
 35-8 
 27-5 
 37-2 
 38.5 
 3i.8 
 27.2 
 32 
 39-8 
 45-5 
 44 
 57 
 45 
 49-5 
 49-8 
 42.2 
 50-5 
 39-5 
 
 16.5 
 
 20.8 
 
 12.5 
 15.2 
 17 
 17-5 
 19 
 15.5 
 13.2 
 15.5 
 
 12.8 
 
 19 
 12.5 
 
 <7-5 
 12.5 
 
 12.8 
 II. 2 
 
 10.8 
 10.8 
 10.8 
 
 9-2 
 
 12 
 9-5 
 15 
 
 44-2 
 68.2 
 44-2 
 52 
 48.5 
 59 
 49 
 51.2 
 40.8 
 52.8 
 51.2 
 50.8 
 39-8 
 
 49-5 
 52.2 
 58.2 
 55-2 
 67. & 
 55-8 
 60.2 
 59 
 54-2 
 60 
 54-5 
 
 2 removed '. . . 
 
 3 left on 
 
 4 removed 
 
 5 left on 
 
 6 removed 
 
 7 left on 
 
 8 removed 
 
 9 left on 
 
 10 removed 
 
 1 1 left on 
 
 12 removed 
 
 1 3 left on 
 
 14 removed 
 
 1 5 left on 
 
 1 6 removed ... 
 
 17 left on 
 
 1 8 removed 
 
 19 left on 
 
 20 removed 
 
 2 1 left on 
 
 22 removed 
 
 23 left on 
 
 24 removed 
 
 Av. left on 
 
 175 
 181 
 
 66 
 74 
 
 58 
 63 
 
 36.9 
 41.3 
 
 I3-I 
 15-2 
 
 50 
 56.5 
 
 ' ' removed 
 
 pulled .... 
 
 169 
 
 184 
 
 85 
 69 
 
 55 
 66 
 
 48.8 
 38 
 
 15 
 
 15 
 
 63. S 
 
 53 
 
 " cut off 
 
 removed when expanded 
 " " before " 
 
 185 
 173 
 
 73 
 75 
 
 64 
 61 
 
 40.6 
 42.1 
 
 I5.I 
 15-3 
 
 55-7 
 57-4 
 
 In eighteen out of twenty-three comparisons, the yield of corn was 
 greater for the rows having the tassels removed. For lassels pulled we 
 have an increase of twenty-seven per cent., and for those cut only six 
 per cent. Removed before expanded gives an increase of fifteen per 
 cent., and removed after expanded, an increase of eleven per cent. The 
 average increase is thirteen per cent. 
 
 In 1891, the tassels were removed from every alternate one of 
 thirty rows, with the result of only one pound difference in the aggre- 
 gate yield of ear corn. In 1892, the tassels were removed from every 
 alternate one of twenty rows, and both the number of ears and yield 
 were slightly reduced, the reduction being 2.2 per cent. In each of the 
 last two years mentioned, the tassels were removed as soon as they 
 appeared, by pulling at intervals of from two to four days. These 
 results are conflicting, as are those of several other stations on this sub- 
 ject. The meteorological record shows us that during the period of 
 removing tassels in 1894 the rainfull was very light, being less than 
 
1895-] FIELD EXPERIMENTS WITH CORN, 1894. 23 
 
 three-fourths of an inch, while for the periods of detasseling in 1891 
 and 1892 the rainfall was abundant. 
 
 The results of other stations are briefly as follows: At the Mary- 
 land Station, when the tassels of two out of every three rows were 
 removed the detasseled rows gave a decrease in yield of 9.7 per cent. 
 
 At the Kansas Station, removing the tassels of alternate rows of 
 six varieties gave in every case a reduced yield, the average reduction 
 being 22 per cent. 
 
 The Delaware Station tried removing tassels on alternate rows, 
 and secured an increase in yield of 66 per cent. Quoting Delaware: 
 "A poor stand had necessitated numerous re-plants; upon such the 
 tassels appeared later, and hence necessitated a daily revision of the 
 work during, possibly, one week. Numerous tassels developed upon 
 very late stalks after that time, and they were allowed to remain undis- 
 turbed. Upon cutting up the corn, a separation was made." This sep- 
 aration showed that only two-fifths of the stalks had tassels removed. 
 The yield of both tasseled and detasseled was calculated by assuming 
 7,300 stalks to an acre. This comparison is unfair, from the fact that 
 the detasseled stalks were the earlier ones, and consequently had the 
 better chance for development; while all of the late stalks, which are 
 usually inferior, were thrown into the part having tassels undisturbed. 
 
 The Kansas Station, by removing tassels on alternate rows as soon 
 as they appeared, found an increase of fourteen per cent. This gain 
 may be due to the fact that the plats were only five rows wide, and that 
 two of the three rows having tassels removed were outside rows, thus 
 having a better chance for development. 
 
 Early experiments at our Station, where a space of one row was 
 left between plats, showed that the outside rows made larger yields 
 than the interior ones. The average increase from outside rows, for 
 twenty-five plats, was 12.3 per cent. 
 
 In 1890, Cornell Station reported an increase of fifty per cent, from 
 removing tassels on alternate rows as soon as they appeared; while in 
 1891, when tried on two tracts, there was practically no difference in 
 yield. The results may have been influenced by the rain, which in 
 
 1890 was very little during the period of removing the tassels, while in 
 
 1891 it was considerable. 
 
 Pollen and anthers collected show that there would be about 6.01 
 Ib. of nitrogen in an acre, while the theory that, if the tassels are 
 removed before pollen is produced, the material ordinarily used in pro- 
 ducing anthers and pollen may be used in producing more grain, is all 
 right; it does not seem to work out in that way under most circum- 
 stances. If an increase in grain is secured by detasseling, it is most 
 likely to be on poor soil or in dry seasons. It seems that the injury 
 done the plants may sometimes reduce the yield. 
 
24 BULLETIN NO. 37. [March, 1895. 
 
 Experiment No. 163, Corn, Listing. 
 
 The land used for this experiment was in corn in 1893 and was- 
 fall plowed. The listing was done by furrowing about four inches 
 deep and planting the corn in the bottom of the furrow. Ten plats 
 listed gave an average yield of 51.1 bu., as compared with 55.9 bu. for 
 ten adjacent plats that were planted in the ordinary way. 
 
 F. D. GARDNER, B. S., 
 
 Assistant Agriculturist. 
 
 NOTICE. 
 
 The Station has no seed corn for sale. The varieties here reported 
 can usually be secured by addressing the person from whom the Station 
 secured its seed, as reported on pages 10-12. 
 
i ->-<rf j/Ok-t.&Ze' ( v M t . 
 

 
UN VERSfTY OF ILLINOIS-URBAN*