BULLETIN No. 210API,12 APRIL, 1920 ALABAMA Agricultural Experiment Station OF THE Alabama Polytechnic Institute AUBURN Time of Applying Nitrate of Scda to Corn PART I Experiments at Auburn, 1910-1916 PART II Alabo~wa Counties Experiments in Various 1914-1919 By E. F. CAUTHEN and J. T. WILLIAMSON 1920 Post Publishing Company Opelika, Ala. STATION STAFF C. C. THACH, President of the College. J. F. DUGGAR, Director of Experiment Station. AGRICULTURE: HORTICULTURE: J. E. M. J. F. Duggar, Agriculturist F. Cauthen, Agriculturist J. Funchess, Agronomist T. Williamson, Superintendent Cooperative Ex- G. C. Starcher Horticulturist J. C. C. Price, Associate * C. L. Isbell, Assistan periments in Agriculture H. B. Tisdale, Associate Plant Breeder O. H. Sellers, Assistant VETERINARY SCIENCE: ENTOMOLOGY: C. A. Cary, Veterinarian CHEMISTRY: W. E. Hinds, Entomologist F. L. Thomas, Assistant J. M. Robinson, Assistant B. B. Ross, Chemist E. R. Miller, Chemist Soils and Crops C. L. Hare, Physiological Chemist BOTANY: ANIMAL HUSBANDRY: W. A. Gardner, Botanist Robert Stratton, Assistant PLANT PATHOLOGY: G. S. Templeton, Animal Husbandman E. Gibbens, Assistant G. L. Burleson, Assistant F. W. Burns, Assistant G. L. Peltier, Plant Pathologist A. F. Thiel, Associate Plant Pathologist EDITOR: Leslie L. Gilber 4 SUMMARY When 120 pounds of nitrate of soda was applied to corn at different stages of growth, namely at time of thinning, when it was 2Y2 feet high, when it was 3 to 4 feet high, and when bunching to tassel, the largest average increase for the five year period was 7.5 bushels per acre, and this came from the application made when the plants were 21/2 feet high. When the amount of nitrate of soda was doubled,one-half applied when the plants were 2% feet high and the other half when bunching to tassel, the average increase was 9.5 bushels. When 240 pounds of nitrate of soda was applied,feet high and one-half when the corn plants were 2 the other half when they were bunching to tassel,-the average increase from this double application in a three year period was 11.9 bushels per acre; but when 240 pounds of cotton seed meal was substituted for the first application of nitrate of soda, this double application gave an average increase of only 10.0 bushels per acre. The 240 pounds of nitrate of soda per acre was more effective by 1.9 bushels than the 240 pounds of cotton seed mead and 120 pounds of nitrate of soda. In a two year test on poor sandy soil, 120 pounds of nitrate of soda per acre applied at planting time increased the average yield 3.9 bushels; but when it was applied as a side dressing to corn 2/ feet high, it increased the average yield 9.3 bushels per acre. When nitrate of soda was applied to corn at different stages of growth in 11 experiments conducted in various counties, an average of the results shows that when 100 pounds were used the largest increase (5.7 bushels per acre) was obtained when the plants were 21/2 feet tall. When the application of 100 pounds of nitrate of soda per acre was delayed until the plants Were bunching to tassel, an increase of 3.1 bushels per acre was secured. However, this increase was so small that it was barely profitable. Two hundred pounds of nitrate of soda per acre, (100 pounds of which was applied when the plants were 2% feet tall, and 100 pounds when they were bunching to tassel), afforded an average increase of 6 bushels of corn per acre. TIME OF APPLYING NITRATE OF SODA TO CORN PART I By E. F. CAUTHEN EXPERIMENTS AT AUBURN The purpose of this experiment is to determine the time when nitrate of soda should be applied to corn to get the maximum benefit. The tests of 1918 and 1919 were made on sandy land that had been planted in cotton and corn many years and was very low in plant food; but the tests of previous years were conducted on upland sandy loam soil that had been planted in cotton, corn and legumes and that was moderately well supplied with plant food. The land was prepared in the usual way and the corn planted in the water furrow. The rows were 4 2/3 feet wide and the plants stood 18 to 30 inches apart in the drill. The average date of planting for the seven year test was April 17th. At the time of planting, a mixture of 240 pounds of acid phosphate and 100 pounds of kainit (or the equivalent potash from some other source) per acre was applied in the drill on all plots. The nitrate of soda at dates indicated in the table was evenly distributed in the drill or side cultivating furrow and covered with soil with the next furrow. The corn was thinned after it was 10 or 15 days old and given clean shallow cultivation until it began to tassel. The high ridges between the corn rows were worked down level by the different cultivations, and the crop was usually "laid-by" on a level surface. In 1914 the season was so very dry and hot at the time the corn was tasseling and silking that the crop from all plots was a failure; therefore the data for this year are omitted. When corn was planted on soil fairly well supplied with plant food, the increases due to different dates of application were not large. The largest increases were secured in 1918 and 1919 when the corn was planted on poor coastal plain soil that had not borne any recent crop of legumes. 21 Table I. Effects of 120 Pounds of Nitrate of Soda applied to Corn at Different Stages of Growth; Amount of ni- Stages when lAv, date I trogenous fer- applied of appli I tilizer per cation I Bushels of corn per acre Ices acre I I __________ _________ 1151~9161191719l99Avrgs 7.41 19.7120.71 7.41 No nitrogen 120Olbs. of NiI I trate of Soda Thinning May 241 37.6121.3126.8116.71 trate of Soda 12 1_2 11.7) 5.81 I I 16.2 22.8 23.7 6.6 1201lbs. of Ni121/2 feet high June 12 32.91 25.5128-2119.3112.51 I 1 1 I 7.5 b.o Soda (high of i1 o4elIItrate (June 21 35.1l 26.9 lJune 1 1201lbs. of Nitrate of Sodal 2/ 2 feet highlJune 121 trate of Soda tassel 12 b.o Soda (Bunching to(Ij trate of i 120 lbs. of Ni- Bunching to! 23.61 15.91 10.8 ) TI I I I! 301 34.91 28.2j 27.41 14.71 11.6 1 1 1 I 22.4 23.4 I 1 6.2 7.2 I 25.7* I 240 lbs. Cot-I ton Seed Meal 12/2 feet high June 121 120 lbs. of Ni- II I trate * tse June 30, 33.61 25.51I 31.81 21.81 16.0! I I 9.5 of Soda (Bunching to1 31 I19423 1.1 3.I. 5. The average yield for 1917, 1918, and 1919 was 23.2 bushels per acre. In the five year period the no nitrogen treatment gave an average yield of only 16.2 bushels per acre. When 120 pounds of nitrate of soda was applied at time bushels per acre. The nitrate was 22.8 average increase of 6.6 bushels. of gave an thinning the average yield for the same period soda here When the same amount of nitrate of soda was applied to corn plants 2 feet high, that is about 40 days after planting, the average yield was 23.7 bushels, or an increase of 7.5 bushels over the no-nitrate plot. When the nitrate of soda was applied to corn from 3 to 4 feet high, that is about 50 days after planting, the average yield was 22.4 bushels per acre-an average increase of 6.2 bushels. This is 1.3 bushels less than wvhen it was applied to corn 2 feet high. When the same amount of nitrate of soda was ap- 22 plied to corn bunching to tassel, that is about 60 days after planting, the average yield was 23.4 bushels per acre. This is an increase of 7.2 bushels per acre over the no-nitrate of soda plot. The largest average increase was secured from the application made when the corn was 21 feet high. However the increases resulting from the different dates of application did not differ widely. When the amount of nitrate of soda was doubled and one-half of the amount applied when the plants were 2% feet high and the other half when the plants were bunching to tassel, the average yield was 25.7 bushels per acre. The increase from the use of 240 pounds of nitrate of soda in divided applications was 9.5 bushels or 58.6 percent. When 120 pounds of nitrate of soda was applied to corn 2% feet high, the average incease was 7.5 bushels per acre or 46.3 percent.. The percentage of increase from the double application was not in the same proportion as that from the 120 pound application and therefore the profit per unit of soda was less. The use of nitrate of soda applied at the rate of 120 pounds per acre at any of the dates indicated in the table was profitable. If the corn was valued at $1.50 per bushel and the nitrate of soda at $75.00 per ton, the average increase of corn, which was 6.6 bushels per acre, would be worth $9.90, while the cost of the 120 pounds of nitrate of soda would be $4.50, leaving a difference of $5.40 as profit less the cost of handling the increased yield of grain. When the application of 240 pounds of nitrate of soda was used per acre, the increase from the fertilizer was 9.5 bushels, which was worth $14.25. After deducting $9.00 the cost of the 240 pounds of nitrate of soda, the profit was only $4.25-$1.15 less than the profit from 120 pounds of nitrate of soda. COMPARISON OF COTTON SEED MEAL AND NITRATE OF SODA ON CORN 2% FEET HIGH In 1917, 1918, and 1919 an additional plot was added to this experiment to compare the efficiency of 240 pounds of cotton seed meal as a substitute for the first application of the 120 pounds of nitrate of soda, in the double application plot, one at 21/2 foot high stage and 23 the other at bunching to tassel stage. The 240 pounds of cotton seed meal carried about the equivalent nitrogen of 120 pounds of nitrate of soda. The average yield from the double application of nitrate of soda for the three years was 23.2 bushels per acre; the average yield from the double application of one cotton seed meal and one nitrate of soda. was 21.3 bushels. During these three years the double nitrate of soda application made an average increase of 1.9 bushels per acre over the cotton seed meal and nitrate of soda application. Comparison of Nitrate of Soda Applied at Planting Time With Other Dates In 1918 and 1919 there was added to the above experiment a new plot on which was applied 120 pounds of nitrate of soda per acre at planting time. During these years the experiment was conducted on poor coastal plain soil. For comparison of yields see Table II. Table II.-Effects of Applying 120 Pounds of Nitrate of Soda Per Acre to Corn at Different Stages of Growth; Bushels of GrainPer Acre 0 _Stages when the nitrate of soda was applied Year No nitrate I Planting I Bu. 10.9 10.0 10.5 3.9 Thinning I Bu. 16.7 11.7 14.2 7.6 212/ feet high 3 to 4 feet high Bunching to tassel I I 1918 I 1919 Av. yield Gain from 120I bsoda o Bu. 7.4 5.8 6.6 1 i Bu. 19.3 12.5 15.9 9.3 I I I Bu. 15.9 9.8 12.9 6.3 I I Bu. 14.7 11.6 13.3 6.7 I The average yield of the no nitrate plot for these two years was only 6.6 bushels per acre, while for the same years the average yield from the 120 pound application of nitrate of soda at planting time was 10.5 bushels per acre, and the average yield from the 120 pound application at the 2/2 foot-high-stage was 15.9 bushels per acre. When the 120 pounds of nitrate of soda was put under the corn, it increased the average yield only 3.9 bushels per acre, but when it was with- 24 held till the corn plants were 21 feet high, it made an average increase of 9.3 bushels per acre. Assuming the value of corn at $1.50 per bushel, the profit from the 120 pound application of nitrate of soda at planting time was only $5.85 which was in excess of the cost of the nitrate of soda, at $75.00 per ton only to the extent of $1.35 per acre; but the profit from the 120 pound application when the plants were 2/ feet high was $13.95 per acre, which was $9.45 in excess of the cost of the nitrate of soda. It is thus seen that 120 pounds of nitrate of soda applied when the plants were 21/2 feet high on coastal plain soil deficient in plant food was more beneficial by $8.10 per acre than when a similar amount was applied under the corn at planting time. The table shows that the maximum increase from the application of 120 pounds of nitrate of soda per acre at different stages of growth was secured from the 2/2 foot-high-stage, that is about 40 days after planting. The application of 120 pounds of nitrate of soda at planting time usually has the effect of making the corn grow off rapidly as soon as it comes up and of attain- ing a greater height, than 'it does when applied after the corn has made some growth. When the application is made at planting time on such sandy soil, the available supply of nitrogen may become exhausted at the time when the growing plants stand in greatest need of it to complete their growth and to produce the ears. Stated in another way the early application may be consumed in making plants and not in making ears. The farmer usually needs bushels of grain and not tons of stover. EXPERIMENTS IN VARIOUS ALABAMA COUNTIES ON TIME OF APPLYING NITRATE OF SODA TO CORN PART II By J. T. WILLIAMSON The experiments recorded in Part II of this bulletin were made possible by the Local Experiment Law passed by the Legislature of Alabama in 1911. These experiments were conducted in various Alabama counties by selected farmers. In conducting these tests the writer endeavored so far as possible to have the nitrate of soda and the cottonseed meal used under natural farm conditions. The experimenting farmers were directed to apply the nitrate of soda to the corn at certain stages of growth. However, in doing so they were expected to make these applications just as they would have made them to much larger areas of their own crop at these particular stages of growth. In other words, an attempt was made to see that these experiments were carried out on a thoroughly practical scale. In some cases weather conditions made it necessary to delay the applications of nitrate of soda beyond the time intended for its application. For the same reason, it was sometimes necessary to make certain applications of the nitrate of soda without covering; although the directions specified that it be lightly covered and thoroughly mixed with the soil. The areas on which the experiments were made were selected and measured by some representative of the Experiment Station. The correct quantity of fertilizer for each plot was weighed and sacked at Auburn and shipped to each experimenter in labeled bags. Uniform directions for applying fertilizers were supplied to each cooperative farmer, and from time to time representatives of the Experiment Station visited each experimenter to assist him in conducting the test and to take notes on the different plots. In most cases no fertilizer was applied other than the nitrogenous fertilizer sent from Auburn. In all cases where fertilizer was used other than that sent from the Experiment Station, the same quantity was applied to each plot, a due record of quantity and kind being 26 made. It is possible that in some cases better yields would have been obtained had there been made an application of phosphate, or of phosphate and potash, in. addition to the nitrogenous fertilizer. The same strain of corn was used thruout any single test. In calculating the profits, prices nearly up to those prevailing now were assumed as follows: Corn $1.50 per bushel. Nitrate of soda $75.00 per ton. Cottonseed meal $70,00 per ton. AVERAGE RESULTS ON VARIOUS SOILS OF APPLYING NITRATE OF SODA TO CORN AT DIFFERENT STAGES OF GROWTH The following pages record the results of the application of nitrate of soda to corn at different stages of growth in eleven experiments on various soils in Alabama. These tests were made on farms of men especially interested in and suited for experimental work of this nature. The two forms of nitrogen were subjected to usual farm conditions so far as possible in keeping with directions for.time of application. In these experiments the average date of planting corn was April 23. The average date of the first application of nitrate of soda was May 27. The corn experiments were made on soils of average fertility, as may be seen by the fact that the average yield of the plots receiving no nitrate ranged from 15.2 to 17.5 bushels per acre. Table III shows the average yields of corn per acre; the calculated increase and profit due to the application of nitrate of soda at different stages of growth; the rate, kind, and amount of nitrogenous fertilizer applied; and the date of application. (See page 27). 27 Table III.-Average Yield, Increase, and Secured When Nitrate-of Soda was Applied to Corn at Different Stages of Growth. Profit of growth land for apa stages plication. acfre, C l Jwe2 May - 1" Kind tand amount_,-oflbs. nitrate of soda erlizrs er 2 100 before. and stages,,-aet plants were, 121 inches tall t CZ Jue~ 27 I Bu. Bu. 0 $ ------ 21.0I 5.6 _______, . 4,65 100 lbs.,nitrate of soda! No nitrogen were when plants 2/2 feet tall ------------ I 100 lbs. nitrate of sodal feet tall June 12 21. 5.7 5.1 4.80 3.90. __ when plants were 3/Y2I[ ------- June 22 20.81 100 lbs. nitrate of soda when bunching to tassel ------ July. 2 19.3 3.1 0.90 100 lbs. nitrate of soda! when plants were 21/21 feet tall-------------F(June 15 100 lbs. nitrate of soda when bunching-to tas sel 200 22.7. July 2 _ 6.0 _ _ _ 1.50 _ _ meal were inches -- - -- - -- - lbs. cottonseedjl when plants not over 12 tall----------- May 27 23.0 July 1 __ _ _ 100 lbs. nitrate of soda 6.5 _ _ when bunching to tassel --No nitrogen *Average -1.00 _ _ _ ---- 17.5** * * 10 experiments, Average 7 experiments. Average planting date April 15. 28 Table III shows that the largest profit ($4.80 per acre) was secured from the use of 100 pounds of nitrate of soda per acre when the corn plants were 2 feet tall. When the applicatidn of 100 pounds of nitrate of soda per acre was delayed until the plants were bunching to tassel, an increase of only 3.1 bushels of corn per acre was secured. However, this increase did but little more than pay for the nitrate of soda. An application of 200 pounds of nitrate of soda per acre, (half of which was applied when the plants were 21/2 - feet tall, and half when they were bunching to tassel), produced an increase of 6.0 bushels of corn per acre, at a profit of only $1.50. When 200 pounds of cottonseed meal per acre was applied by, or before, the time the plants were 12 inches tall, and 100 pounds of nitrate of soda was added to this when the corn was bunching to tassel, the largest increase, 6.5 bushels per acre, was secured. This increase, however, was produced at a loss of $1.00 per acre. Experiments in Tallapoosa, Covington, Etowah. and Montgomery Counties 1916 1916 1916I 1914. Kind and amount of W. T. Langley, Camp Hill J. F. Hicks, Andalusia E. 11. Cornelius, Murray W. P. McGehee, Montg' fert. per acre and I _______-______:-___________Cross stages was d: irceob pper I nit'gen applied per nit'genl applied per nit'genl appliedI perI nit'genf applied plied. acreI plots ____ acre plotsI acre p~lots I acre plots 100 lbs. nitrate of sodaI Bus. Bus. Bus. Bus. Bus. Bus. Bus. Bus.1 when plants were not I over 12 inches tall 24.0 I 1.6 May 26 17.5 6.4 June 61 18.3 1.9 1 May 8.8 June 91 8.4 No nitrogen 22.3 ___ 10.9 10.5 I___I____ 7.3 1 100 lbs. nitrate of soda 1I I _______ ---of sodal -- 1 weplnsr212feet tall ------- 26.5 4.2 1 June 121 16.1 5.5 June 201 17.9 6.4- June 191 8.4 0.2 100 lbs. nitrate My2 My3 Jn8 ____ we-latwee32feet tall_---_-- 26.7 of soda 4.5 5.8 June 221 10.3 9.7 9.8 100 lbs. nitrate -0.1 -0.4 when bunching to ________ Noettal e w ritrogen _ --- e2/ l - ns we -- se ---d_ -J 1_22.11 tas--05 28.0 June 281 ! July un 15.2 15.9 2.7 2.4 _ _ June 28L July _n 7.1! -1.9 -0.5_ j _ July 101 _n _ 1 61 8 9.4 10.7! 2 I 1 0J 14.51 _ _ntrtfs 100 lbs. nitrate of soda1 when bunching to tassel ___ _____________1 28.6 6.5 )It I 16.5 1 221 ____I___ 7.0 July 11! 18.9 I ue 3.4 ___ 12.6 1July . 2 81.___ 1.0H _______ 200 meal wee lbs. when plants otoer12 cottonseed I (June I 101. 7.5 Il June 22 1 - inhs al------1119.3 100 lbs. nitra of soda 29.5 sel -------- e when bunching to tas- I I inhe -_____rJune al 1 18.9 9.9) I , 6 I2.8 11. I lI H July 111 1 June 271 1 11 I 13.6 II 1.2 I Jn 8 Experiments in Lamar, Wilcox, De kaib and Limestone Counties Kind and amount of fert. per acre and stages of growth it was directed to be applied, 1918 W. H. Vail, Milport Date Inc. I nitrate applied acre 1 plots Bus. IBus.! [19.7 11.2 1 Yield corn per lover no! 1nit'gen 19.0 { No nitrogen 1918 I 1917 !J. W. Watson, Collinsville C. F. E. Munger, Sunny South Date Yield lover nojI nitrate Inc. Date corn cornlover no! nitrate I Yield I Inc. per Init'genj applied per nit'genj applied I acre [plots_____ acre Iplots ( Bus. Bus.! IBus. Bus.!IBus.(Bus.! I_26.6 II16.6! 15.3 1917 Chas. King, Yield lover no corn I Inc. per nit'genap acreLplots 100 lbs. nitrate of soda I when plants were not! over 12 inches tall _100 bs.pa l nitrate wofr1 soda! 8.4 7.5 9.6 II May 16! I 5.5 6.4 5.4 II May 20! May 23.7 27.3 27.4 I 6.1 I I ! II_____ 1 May 28 June 18! 41 _ 31.2 32.4L6.2 34.7 4.8 17.5 feet tall 100 lbs. nitrate of soda! when plants were 31/21 19.0 feet tall No nitrogen 18.8! 100 lbs. nitrate of, soda 11 when bunching to tas- f sel -1-----_--! 14.7 100 lbs. p a t w soda! nitrate of e2 2 lwhen plants 2 were when plants were 2( ----------- I June 11! 1 16.3 29! I 8.8 7.9 _ ---------- . 1 June 1i 15.3 June 10! I July _ 8.8 _ _ _ 110.0! I 1 0.7 ! June 18! 1020.41 26.5 2. 4! 32.7-5.8 6.2 1 June 27! I 1 10.5 5.5 1 July fee stall nh no _-F-une-11IIIF(MaJune v r 1 1.18I15.3 (June 241F (Ma 11 21! 100 lbs. nitrate of soda! 1799.4 when bunching to las- I sel ----------- I 1.2 5.7 June !I 1!I I 1June18! I3.8 30.63I19.21 18!1I(I III I3. July 4!1___ 6. . _ _ u e 1 u e 3 100 bnitrte of -soda!--1 7.98 .811 3.81I23.3 17.23H.5 Experiments in St. Clair, Dale and Coffee Counties Kind and amount of fert. per acre and plied.____ w. H. Jenkins, Ashville Yield Increase Date stages of roth it corn over no nitrate was directed to be ap- per acre nitrogen1 applied plots 1 _ 1919 J. W. Wilkinson, Ozark Yield.Increase Date corn over no nitrate per acre f nitrogen applied _ 1918 M. A. Helms, Elba Yield Increase Date corn over no nitrate per acre nitrogen applied plots 1918 plots Bus. No nitrogen ________ _ Bus. Bus. 19.4 Bus. I I Bus. 17.4 Bus. I May 25 100 lbs. nitrate of soda when.plants were not over 12 inches tall -100 lbs. nitrate of soda when plants were 21/2 feet tall 100 lbs. nitrate of soda when plants ~ere 312 feet tall No nitrogen 28.6 30.9 1(1 I 15.1 June 6 30, 8 22.8 22.7 .22.7 18.7 21.4 3.6 3.6 3.8 _19.5 June 1 22.6 17.4 21.1 4.7 17.4 L June I( 1 I June 14 -1.1 2.1 I June 8 -----------29.1 1 1 5.6 July 13.5 _ 1 June 25 June 22 100 lbs. nitrate of soda when bunching to tassel _--_ _ _ _ -- - I 22.9 9.5 July 221 2.5205 (fJune 100 lbs. nitrate of sodawp ee when plants were 21/2 feet tall ------ I IF(June 30 14 100 lbs. nitrate of soda when bunchin' to sel 34.5 tas-I 21.2 __ 1 ( II iHi 21.9 I 1 2.8 1 KJuly 2 19.5 L 0.0 I Ii (June 25 --------------- lbs. cottonseed .meal when vr1 plants inches tall 200 L July June 21 July 25 ------- ( Ieeno 6(Iun I 21~7 2.4 ay2 100 lbs. nitrate of soda when bunching to tassel No nitrogen 29.5 _______--_-____--July 16.3 I I 21 II I ---- ____ __ I 21.1 2 19.5? 1.6 II 1i July 25 July f1 13.1 1________ 19.5 1____ Nitrate of Soda Applied to Corn at Different Stages of grow/lh; Details Relative in Various Counties of Alabama. I to Experiments Conducte Location, distance and IYear directionI from I P. 0., 1 ~ _ _1_ - - -- _(1 I Character of soil and subsoil 1Pre Years in1 Icultivation I Preceding evious Cropping - I Year ---- a AsLville 41/2 mi. S. W. of E. Ozark 51/ JMany Corn I (b) Red clay Iulr\a ~~~rl v ~rrllr~ of1918 (a) Dark gray sandy Many Corn i. 19191 (a) Grayish fine I (b) stiff er red -L Second Year preceding Corn 1 -r Date itrte of planting nitrated Date Other fertilizers used and rate per acre of applying No other iJ 5-3I6-6 Ic~ai1 Corn ~Pa~4-13 ~nl 4 1 1 6- 1 No other mi. N. Elba 11/ mi. N. of Millport 1 mi. E. of I 1918 (a) Gray sandy About I (b) Stiffer yellow 1 19 ,3(a) Gray fine sandy!Many ((b) 1 3 1 25 Corn and vel- Corn and vel- No other Stiffer yellow 1II vet beans Cotton Corn vet beans !Wheat stubble! 5-6 1 I 5-20 No cther _ ______ Sunny South 2/2 mi. E. of Collinsville 3 mi. S. of Athens 4'/2 mi. S. of 11918 (a) Gray fine sandy Many t (b) Stiffer yellow 11917 (a) Fine gray gravellylIMany (b) Red clay 1917 (a) Reddish clay (b) Red clay Cotton Corn No other _______________________ _______ II ICotton1 1 5-281 Acid phosphate __ Camp Hill mi. N. E. of Murray Cross 6 mi. vS. ~E. of ~r~l~l 3/ 19161(a) 2mi.S.of(b)StiffrredAndalusia1916(a) Gray sandy loamAbout Bed sandy loam IAbout 50 10 (Many Corn and cow- !Corn and cowpeas peas Cotton vet beans Cowpeas ! 4-25 15- About I 4- 1 5-29I No other 1 5-26 No other Coin and vel-14-20 I Montgomery 10 mi. 1916 11914 I lr~ (b) Stiffer yellow 6- 6Aiphs ___1___________ S. of 1 Gray fine sandy (a) (b). Stiffer reddih u uruv V UUL~\I~ I 114~111 1 V gray prairie Many About 30 Cotton Corn 6- 9 5- 5 200 lbs. of 10-2-2 240 lbs. Acid phosphate 50 lbs. muriate of potash (a)ark 14- 1