BULLETIN No. 182 DECEMBER, 1914 ALABAMA Agricultural ExperIment Station OF THE Alabama Polytechnic Institute AUBURN Local Fertilizer Experiments With Corn in North Alabama in 1911, 1912, 1913 and 1914 By J. F. DUGGAR and J. T. WILLIAMSON 1914 Post Publishing Company Opelika, Ala. COMMITTEE OF TRUSTEES ON EXPERIMENT STATION. HON. R. F. KOLB------------------------------Montgomery HON. A. W. BELL----------------------------------Anniston HION. J. A. ROGERS-------------------------------- Gainesville STATION STAFF. C. THACH, President of the College. C. J. F. DUGGAR, Director of. Experiment Station and Extension. AGRICULTURE : BOTANY : J. F. Duggar, Agriculturist. E. F. Cauthen, Associate. J. T. Williamson, Field Agent. D. J. Burleson, Assistant. 0. H. Sellers, Assistant. H. B. Tisdale, Assistant. VETERINARY M. J. Funchess, Associate. J. S. Caldwell, Botanist. A. B. Massey, Assistant. PLANT PATHOLOGY: F. A. Wolf, Pathologist. HORTICULTURE: SCIENCE: C. A. Cary, Veterinarian. H. C. Wilson, Hog Cholera.Expert. * L. F. Pritchett, Assistant. CHEMI.STRY: J. T. Anderson, Chemist, Soils Ernest Walker, Horticulturist. J. C. C. Price, Associate. G. V. Stelzenmuller, Field Agent. ENTOMOLOGY: ~C. and Crops. S. L. Hare, Physiological Chemist. Adler, Assistant. W. E. Hinds, Entomologist. J. E. Buck, Assistant. ANIMAL JUNIOR AND HOME ECONOMICS Ex* * TENSION: L. N. Duncan, Superintendent. Miss Madge J. Reese, Assistant. INDUSTRY: Hus- G. S. Templeton, Animal bandman. J. C. Ford, Assistant. omilcs.** * I. B. Kerlin, Assistant.* Nellie M. Tappan, Home Econ- E. S. Girton, Assistant. N. A. Negley, Assistant. E. Gibbens, Assistant. * *In *In cooperation with United States Department of Agriculture. cooperation with Alabama Girl's Technical Institute. LOCAL FERTILIZER EXPERIMENTS WITH CORN IN NORTH ALABAMA IN 1911-1912-1913-1914 BY J. F. DUGGAR AND J. T. WILLIAMSON. CONCLUSIONS AND RECOMMENDATIONS. From these experiments, most of which were conducted on poor land in dry seasons, it appears that under these conditions, reliance should not be placed chiefly on commercial fertilizers in growing corn. Commercial fertilizers have proved much more effective and profitable for cotton than for corn. On about half of the experiments nitrogen, when employed as cotton seed meal, gave an increase sufficient to be profitable. Acid phosphate, like cotton seed meal, gave small increases in most cases, but under the conditions of the unfavorable seasons, these increases were profitable in only about 50 per cent of the experiments. Nitrate of soda, applied when the corn plants were 2 to 3 feet high, and on plots which had previously received acid phosphate and kainit afforded, in 72 per cent of these experiments, a profit above the cost of the nitrate. Moreover, the complete fertilizer containing 100 pounds nitrate of soda, 240 pounds acid phosphate and 100 pounds kainit afforded a profit in 71 per cent of these experiments; but when nitrogen in a complete fertilizer was supplied in the form of cotton seed meal, the resulting increase was sufficient to afford a profit in only 39 per cent of these experiments. In most of these experiments, kainit at the rate of 200 pounds per acre, was the least profitable of the fertilizers tested. While this amount of kainit was usually unprofitable when used alone or with only one other fertilizer, yet in many of the experiments it proved slightly profitable as a part of a complete fertilizer containing nitrogen, phosphate and potash. In these experiments commercial fertilizers usually increased the yield to at least as large an extent on land capable of producing 25 to 30 bushels of corn without fertilizer as on poorer land; this suggests that 186 it was the supply of moisture in the richer soils, rather than the fertilizers, which determined yield in these unfavorable seasons. This argues for the plowing under of organic matter in connection with the use of only moderate amounts of commercial fertilizers for corn. Considering other experiments, as well as these, the writers make the following general recommendations regarding the fertilization of corn: (1) That so far as practicable stable manure and the remains of soil-improving plants, such as cowpeas, velvet beans and crimson clover, be preferred to most kinds of commercial fertilizers. (2) That the amounts of commercial fertilizer be limited. (3) That most of the money invested in fertilizers be used in the purchase of nitrogen. (4) That where a pound of nitrogen can be bought in nitrate of soda at about the same price as in cotton seed meal, the preference be given to nitrate of soda as a fertilizer for corn. (5) That in view of results of unpublished experiments to determine the best time of applying nitrate of soda it is recommended that it be applied as a side application when the corn plants are between 2-/ and 4 feet high. (6) That on soils known to be deficient in phosphoric acid, and especially where heavy applications have not been applied to preceding crops, a moderate amount of acid phosphate be employed. (7) That no investment be made in potash as a fertilizer for corn, especially at the high prices which will doubtless prevail in 1915, except where experience has shown the need of it; and that under normal conditions potash constitute only a small part of the fertilizer for corn, and then only in a complete fertilizer. For the farmer wishing to make only a small investment in the fertilization of corn the following formula, for corn grown under average conditions, is suggested: 100 pounds acid phosphate, before planting or by the time plants are 2-1/2 feet high. 60-100 pounds nitrate of soda, applied when the plants are 2-2 to 4 feet high. Or, if nitrate of soda is not available, 120 to 200 pounds cotton seed meal, applied at the same time as the phosphate, may be substituted. 187 INTRODUCTORY. The chief object of these local fertilizer experiments or soil tests has been to ascertain the best combination of fertilizers for corn growing on each of the principal soils of the northern half of Alabama. The results recorded in this bulletin were obtained in fertilizer experiments conducted with funds appropriated by the Legislature of Alabama, in February 1911, to the Experiment Station for making local experiments with crops, fertilizers, fruits, live stock, insects, plant diseases, etc. This bulletin deals with fertilizer experiments carried to a conclusion in 1911-12-13-14 in the northern half of the State. For convenience the counties grouped together in this bulletin are those lying wholly north of the Central Prairie or Lime Region. The results of fertilizer experiments made in the ,counties lying south of the Central Prairie Region appear in Bulletin No. 181 of this Station. Local fertilizer tests constitute only one of many lines of experiments instituted in 1911 by the Alabama Experiment Station with the support of State funds. Local fertilizer experiments as now conducted are .made by farmers especially recommended as being :men likely to take the necessary pains to secure accurate results. Small lots of carefully weighed and mixed fertilizers were supplied to each experimenter. Detailed instructions as to how to conduct the experiment and blank forms for reporting results were also furnished. Representatives of the Station inspected the experiments here published as often as practicable. The directions sent to each experimenter stated that the land employed for this test should be level and uniform, not manured in recent years, not in cowpeas the preceding year, and that it should be representative of large soil areas in its vicinity. In order to meet these conditions it was often necessary to select very old, "run-down" cotton land on which no effort for improvement had been made. This largely explains why the yields were not higher. The need of perfect uniformity and standard treatment for all plots (except as to kind of fertilizer used) was emphasized. 188 Fertilizers were applied in the usual manner-that is, drilled before planting, except nitrate of soda which was directed to be applied when the plants were 2 to 3 feet high. Bulletins thus far published in this series detailing the results of local fertilizer experiments with cotton on this uniform plan are the following: For South Alabama-Bulletins No. 160, 169 and 174. For North Alabama-Bulletins No. 162, 170 and 175. The experiments with corn detailed in this bulletin are on exactly the same plan as the fertilizer experiments heretofore conducted with cotton. FIELD EXPERIMENTS REPEATED OF DETERMINING OFTEN, THE ONLY A MEANS WHAT FERTILIZERS GIVEN TYPE OF SOIL REQUIRES. The reader should bear in mind that there are great numbers of different soils in Alabama, and that even the same soil would give different results in different years, depending on how it had been cropped, fertilized and cared for in the year or two immediately preceding the test. It is the purpose of the authors in later years to publish bulletins classifying the soils on which all these tests are made and drawing conclusions relative to the needs of each class of soils. However, before this can be safely done, these experiments must be often repeated, so that the average results may teach clearly the fertilizer requirements of each distinct type of soil. Averaging the results obtained on dissimilar soils will not afford the desired information. Neither will chemical analysis of the soil indicate what fertilizers are needed. WEATHER CONDITIONS. The average rainfall in the part of Alabama covered by these experiments is given below by months, according to data furnished by the Alabama Weather Ser- vice. 1911 January ---------February --------March ----------April -----------May ------------June ------------July ------------- 1912 4.58 4.28 2.38 8.22 2.50 3.77 6.25 1913 5.78 5.14 9.98 8.89 3.24 5.58 5.52 1914 7.42 6.03 7.00 2.25 4.10 3.69 3.95 2.10 3.57 4.27 4.83 1.37 2.30 4.53 189 August ------------ 4.66 9 September----October ---------- 3.72 November-------- 4.58 December --------- 7.99 Total 12 months 5.56 3.60 2.81 1.07 2.59 2.11 1.25 5.77 3.70 -6.21 3.00 __54.85 6.14 3.11 3.03 5.93 63.11 49.86 44.25 The total rainfall for the months of May, June and July, and its distribution are probably the most important climatic factors in determining the yield of corn. Hence, it should be noted that for these critical months of the growing season, the rainfall was as follows: 1911-_____ 1912 1914 __------------12.52 7------- inches ------------ 14.34 inches 1913--------------------11.74 inches -------------------- 8.20 inches For corn, . 1913 and 1914 were dry seasons so that fertilizers railed to exert their full effect. Moreover, the month of May had a deficient rainfall, both in 1913 and 1914. Hence, the yields ported in this bulletin are below the normal. re- LOCATION OF EXPERIMENTS. County Post Office Bibb--________Brent Calhoun ------- Anniston ---_J. J. -- __- Chambers Cleburne ---- LaFayette Name Page D. James-------------208 E. L. Turner, Jr. -__208; _____T. C. Key--------------204 Clay----------Ashland- Clay ---------- Lineville ___- Tuscumbia Colbert Cullman--__---Hanceville _ -Heflin--------W. G. _-__-_-_I_. ----- Russell J.H. --.M. Upchurch -_ ___202 _203; Campbell DeKaib Etowah -------- Collinsville A. Ventrees ----------- 207 198-199, ------- Steele --------- J. T. Hawkins---_ -W.. H. Harris T. A. Williams - -205-20 192-207 ---- A95. ------194-207 'Lawrence--Courtland Limestone Jackson------_-Stevenson -- Birmingham Jefferson --Lawrence _-_ _-_Courtland J. W. _ _8th C. Tally Mims E. ---------- E. Hotchkiss Saunders --------- 207-------- 207 _____209, Madison-----.Huntsville Madison Marion------------- -.~Athens-------Huntsville Gumn-------. -_1_W. Dist. Agr. School ___C. E. Hoy--------------_207 ___W. -193-207 H. Johnston -___------ Marion -------- Gumn---------- Marshall------- Marshall Morgan-------Morgan-------- ----. Boaz ---------- J. Albertville____ New Decatur L. S. H. Bowlan ------ 200-208 207 Bowlan---------200 R. Smith------------_198 Decatur------- W. 7th Dist. Agr. School --L. B. Wyatt-------------C. Holland---------- _197 207 -__196 St. Clair------- Asheville Talladega Talladega- - --Jenkins and Stevenson 193' 203; Tallapoosa Walker-------- Jasper Camp Hill --- J. - -_ M. Howington -------- D. W. T. Langley ---------_-------201 B. Lewis -------- 206 ---- 190 Experiments were begun in the counties named below, but for various reasons, satisfactorily explained at the time, they were not carried to a conclusion. County Bibb -------- Post Office :Centerville Blount -------- Oneonta-------W. ---J. Ellison------------1912 J. Name Year W. White--_1911 Clay _________LinevilleH_______anceville ____.A. W. Johnston--------1912 Cullman J. Sampley on farm 1)eKalb--------- t. Payne ---- V. F. Tidwell---------_1911 J. Franklin ------ Russellville Bessemer -Jefferson Lawrence Limestone :Madison ------ of J. B. Isbell--------1912 -__913 _ J. M. Webb -__Martin Investment Co. -Wheeler -Elkmont------Tom W. _1914 _1911 G. Gilchrist _ B. Bronaugh--------1911 __1911 Madison _,_____ Huntsville __-_ W. W. Fox_-J. R. Weisinger_1913 Talladega ---- Talladega Winston ------. Double Springs A. S. Vanderford -Madison-------J. Dunnavant--------1912 ----- 1912 THE FERTILIZERS USED. The following prices are used, as representing a rather high average cash price in local markets during the last few years, 1911, 1912, 1913 and 1914: Per Ton -- Acid Phosphate (16 per cent available) _$14.00 Cotton Seed Meal---------------------$30.00 Kainit-------------------------------$14.00 Nitrate of Soda ($50 in 1911 and 1912)-----$60.00 Prices naturally vary in different localities. Any one can substitute the cost of fertilizers in his locality for the prices given above. In each experiment three plots were left unfertilized, these being Plots 3, 7 and 11. 'When these yields differed widely the experiment ive. assumption The increase on plots 4 to 6 is calculated. on 'the that the gradation in fertility is uniform was-classed as inconclus- from plots 3 to 7; likewise the increase is calculated for plots 8 to 10 inclusive.* PRICE ASSUMED FOR CORN. The price assumed per bushel of corn is 75 cents in 1911, 80 cents in 1912, and 90 cents in both 1913 and 1914.' *For the standard method employed in this bulletin for calculating the increased yield, see Alabama Station Bulletin 160 or 162. 191 Pounds per acre of fertilizers; nitrogen, phosphoric acid and potash used, and a composition of each mixture. FERTILIZERS cCO CONTAINS MIXTURE COST OF FERTILIZERS ° o Z 0 KIND OF FERTILIZER .- C 0 1 * o 41o .c - - Lbs. - - Lbs.-Lbs.-Lbs. 1 2 4 5 6 8 J 9 200 Cotton seed meal-------- 13.58 5.76 3.54 In 100 lbs. c. s. meal* __ 6.79 2.88 1.77 $30 00 $3.00 240 Acid phosphate---00-1.68______ 38 In 100 lbs. acid phos---- ------- 16.00 5 200 Kainit --------24.60 14 0----0 4---0 In 100 lbs. kainit_______ _---___---------200 Cotton seed meal-- 13.58 44.16 3.54 240 Acid phosphate----21 27 4.68 In 100 lbs. above mixi.. 3.09 10.04 0.80 200 Cotton seed meal___-__ .200 Kainit_____-- ____ ----13.58 5.76 28.14 22.00 4.40 In 100 lbs. abovre mzxt_ 3.39 1.44 7.03 -240 Acid phosphate-____ .200 ------------ SKaini --------13.99 3.08 In 100 lbs. abovze mixt 8.73 5.59 --- 200 Cotton seed 240 Acid phosphate------200 In 100 lbs. above mixt_ _ 200 Cotton seed meal meal ---- - - 13.58 44.16 28.14 19.00 6.08 10i 240 Acid phosphate--_-0 100 Kainit __ -------) - --15-41 1.584.161.8 2.12 6.90 4.40 18 20.13 5.38 In ICO lbs. above mixt 12~ 240 Acid -___ 100 Kainit--------- phosphate 2.59 14.00 8.18 16.00 2.93) 12.30) * ** 100 Nitrate of soda.--_____ In 100 lbs. above mixt_ *Average 3.18 8.73 24.45 5.38 2.80) of many analyses. Counting all the phosphoric acid in cotton seed meal as available. ** ***Only $22.17 in 1911 and 1912. ****Only $4.88 in 1911 and 1912. Those farmers who are more accustomed to the word ures multiplying by 1 3-14. ammonia than to the term nitrogen, can change the for nitrogen into their ammonia equivalents by fig- 192 SCOLBERT COUNTY, 2 MILES EAST TUSCUMBIA. G. H.. HARRIS-1911. Typical red Tennessee Valley upland. This field had grown corn for the two preceding years, and prior to that time had been used as a pasture. It was fertile enough to produce without fertilizer more than 45 bushels of corn per acre. All fertilizers, whether alone or in combinations, increased the yield, but usually not enough to pay;the cost of the fertilizer. G. H. HARRIS 1914. In 1914 the same experiment was repeated on red soil, somewhat lower and richer than that used in experiment of 1911. All recent crops had been corn. The yield without fertilizer was more than 35 bushels per acre. The results were inconclusive; the effects of the same fertilizers in different combinations being irregular and unaccountable. (See page 209.) Experiments in Colbert and Limestone.Counties. OF the 1911 TUSCUMBIA O 1912 ATHENS Z 8' a Lbs. 1 2 200 240 Fd KIND OF 0 FERTILIZER i , 0 05 . 0 a) I=Q a . o Cotton seed Acid 3 4 5 No fertilizer-___ 200 Kainit ____ _-_ 240 206. phosphate-e l~ phosphate-- meal- Bus. 50.1 47.4 Bus. 4.3 1.6 Bus. B~us. 6.7 3.5 $ 0.23 -0.48 28.1 24.9 $ 2.36 1.12 45.8 48.4 46.6 2.3 0.3 0.33 21.421.8 27.1 0.7 6.4 -0.84 0.44 A\cidS C. S. S200 7 8 200 Kainit____ Meal --- 49.7 -- -4.45 -2.07 ___ 3.1 ____- 29.1 20.0 8.7 No fertilizer.- 46.8 240 Acid phosphate-200 Kainit 200 C. S. Meal _ 240 200 5____ 48.1 50.1 3.1 -0.75 1.0 -5.33. 24.4 33.3 2.7 ------0.92 1.92 2.56 9 Acid phosphate-_ C. S. Meal 200 Kainit---------) 10.0 8.9 10 11 12 -- 51.5 240 Acid phosphate--. )__ 100 Kainit.. No fertilizer------- 47.4 240 Acid phosphate-. 51.8 100 Kainit---------_. 100 Nitrate of 4.2 -2.23 -- 33.9 26.6 35.9 1.74 soda - 4.4 -1.58 9.3 2.56 193 LIMESTONE COUNTY, 1 MILE EAST OF ATHENS EIGHTH DISTRICT AGRICULTURAL SCHOOL-1912. Typical Tennessee Valley red soil. This field had been many years in cultivation. The largest increases in yield, 8.9, 9.3 and 10 bushels per acre, were obtained on Plots 10, 12 and 9 respectively, each fertilized with a complete fertilizer. The largest profit from fertilizer, $2.56 per acre was afforded by Plot 12, fertilized per acre as follows: 240 pounds acid phosphate 100 pounds kainit 100 pounds nitrate of soda The average increases attributable to cotton seed meal was 6.2 bushels per acre; to acid phosphate, 1.6 bushels; and to kainit, 1.4 bushels per acre. Nitrate of soda was superior to cotton seed meal. EIGHTH DISTRICT AGRICULTURAL SCHOOL-1913. A similar experiment with corn was conducted by this Institution in 1913, the results of which were inconclusive. (See page 209.) MORGAN COUNTY, 1-/2 MILES WEST OF DECATUR W. C. HOLLAND 1913. Typical Tennessee Valley red clay soil. The land on which this experiment was. made had been in cultivation 25 or more years. The three preceding crops were cotton. Increases of approximately 3-1/2 bushels per acre were afforded by Plots 9 and 12. No fertilizer or combination of fertilizers afforded increases enough to be notably profitable. 194 * Experiments in Morgan and Jackson.Counties. 1913 DECATUR 1912 STEVENSON ; Z Z 4CC P. k a) KIND OF FERTILIZER ' od o u Q 4 o J I 0~. +_j 0. 0. 4 Q4J-4C C14 1 2 3 4 5 Bus. Bus. Lbs. 2.7 $-0.57 200 Cotton seed meal-- 15.3 0.48 2.4 240 Acid phosphate____ 15.0 _27.5 No fertilizer-______ 12.6 200 Kainit____________ 11.6 -0.9-2.21 200 C. S. Meal--.---13 3 0.8 13 240 Acid phosphate 200 200 C. S. Meal Kainit Bus. 28.6 Bus. 1.1 $-2.12 0.88 1.0 _ __ 22.7 -3.9 -4.52 28.5 61 6 7 8 -- -- 15.2 S____ 13.6 157 2.8 -1.88 28.5 3.6 -1.52 No fertilizer-_ 240 Acid phosphate-_____ 200 Kainit___ __. 1.3-1.91 24.024.9 0.9 -2.36 9 10 200 C. S. Meal.-----240 Acid phosphate _ 11 ii 12 200 200 240 100 Ktinit. -C. S. Meal Acid phosphate Kainit__________ No fertilizer---- 3.-. 30 30.3 6409 6.4 0.26 13. 7 121 15.5 __ -_ 1.5 -4.03 _23.9 240 Acid phosphate__ 100 Kainit_________ 100 Nitrate of soda - 3.4 -2.32 _ 29.4 _ - _ 55 -0.48 __ JACKSON COUNTY, 4 MILES NORTH OF STEVENSON. J. C. TALLY 1912. Light brown Decatur loam, second bottom. This field had been in cultivation for many years, and had borne no legumes in recent years. The largest increase in yield, due to fertilizers,, 6.6 bushels per acre,, was obtained on Plot 5, fertilized as follows : 200 pounds cotton seed meal per acre. 240 pounds acid phosphate per acre. On most plots the increase was not sufficient to pay for ,fertilizers. The average increase, (See page 211), attributable cotton seed meal was 4.9 bushels per acre; to acid to" 195 phosphate, 3.5 bushels, while kainit failed to increase the yield. J. C. TALLY-1913-1914. Mr. Tally repeated this experiment in 1913, when the yields were small, with inconclusive results. (See page 210), and again, with inconclusive results in 1914 when the yields on-the fertilized plots ranged around 40 bushels per acre. (See page 210.) CULLMAN COUNTY, ONE MILE EAST OF HANCEVILLE. T. A. WILLIAMS 1913. Greyish gravelly sandy soil with stiffer subsoil. This field had been in cultivation about ten years. The crop in 1912 and 1910 had been corn and in 1911 oats. The largest increase in yield, 8.1 bushels per acre, was obtained on Plot 2, fertilized with 240 lbs. of acid phosphate per acre. This plot also afforded the largest profit from fertilizers, $5.61. As may be seen from the table of increases on page 211, acid phosphate was more effective than cotton seed meal, and potash was not needed for corn under the conditions of this year. Nitrate of soda was superior to cotton seed meal. 196 Experiments in Cuilman and St. Clair Counties. 1913 1912 HANCEVILLE ASHEVILLE S KIND OF FERTILIZER N °0 °(U N N +a 4 Bus. Lbs. 1 2 3 Bus. Bus. Bus. 4 '63 10 81 240 200 9 200 Cotton seed meal 18.3 4.6'$1.14'33.5-0.1 $-2.92 240 Acid phosphate____ 21.8 8.1 5.61 29.4 -4.88 No fertilizer----- _ 13.7__------------33.4--200 Kainit___1________ 14.6 0.9 -0.59 33.2 0.8 -0.76 200 C. S. Meal___-__ 182 4.6 -0.54 34.1 2.6 2.60 240 Acid phosphate__ 200 C. S. Meal 200 Kainit 15.5 1.9 -2.69 33.2 2.7 -2.24 7 No fertilizer-_13.5------. 29.5------- -4.0 - Acid phosphate-_ -__ Kainit __-_ _ 200 C. S. Meal 240 Acid £ 18.2 3.9 0.431 0.9 26.7 -1.9 -4.60 ) A1 12) 200 200 240 S 100 Kainit_______ C. S. Meal -__ Acid phosphate-_ Kainit___ __._ phosphate-- 22.4 18.2 16.6 7.3 32.1 4.3 2.64 2.4 -3.22 __- 33.7 -____ 6.8 0.06 240 Acid phosphate100 Kainit_______ 100 Nitrate of soda$ No fertilizer____ 26.0 23.7 7.1 1.01 34.9 8.9 2.24 ST. CLAIR COUNTY, 2 MILES SOUTH OF WHITNEY, NEAR ASHEVILLE. JENKINS STEVENSON 1912. Gray sandy soil with light yellow subsoil. This upland field had been in cultivation for many & years. The largest increase, 8.9 bushels per acre, and the largest profit, $2.24 per acre were obtained on Plot 12, fertilized as follows: 240 pounds acid phosphate per acre, 100 pounds kainit per acre and pounds nitrate of soda per acre. The average increase due to 200 pounds cotton seed meal applied before planting was 3.7 bushels per acre; to kainit, 1.8 bftsh ls per acre; and with acid phosjphate there was an average loss of 0.7 bushels per acre. Nitrate of soda applied when the corn was 2 to 3 feet high was more effective than was cotton seed meal aipplied before planting. 100 197 MARSHALL COUNTY, ON CAMPUS OF SEVENTH DISTRICT AGRICULTURAL SCHOOL. ALBERTVILLE. SEVENTH DISTRICT AGRICULTURAL SCHOOL-1914. Gray fine sandy loam with greyish yellow fine sandy subsoil. soil had been in cultivation 10 or more This upland years. The preceding crop was cotton. The .stand was practically the same on all plots. Under the conditions of this season the only fertilizer which produced a profit worth considering was a mixture of 240 pounds acid phosphate per acre. 100 pounds kainit per acre. 100 pounds nitrate of soda per acre. This mixture was used on Plot 12, and gave an increase of 14.4 bushels per acre and a profit of $7.58 per acre. Nitrogen in every combination gave an increased yield, with an average increase of 2.7 bushels per acre; acid phosphate and kainit gave average increases of only 0.4 bushels and 0.8 bushels per acre, respectively. 198 Experiments in Marshall County. 1914 ALBERTVILLE a) .. a 1912 BOAZ KIND OF ° N, aO Z ° FERTILIZER °°Na) ~ aS 1 2 3 4 5 8l Lbs. Bus Bus. 200 Cotton seed meal__15.1 4.2-$ 0.78 240 Acid phosphate____ 13.2- 2.3 0.39 No fertilizer------10.9 -_- 200 Kainit____________ 14.2 2.2 0.58 200 C. S. Meal 15 2523 15.6 2.5 240 Acid phosphate _ _ 61 200 C. S. Meal-.-----l 3.4 -1.34 ?. 17.6 200 C. ni Mea. 7 No fertilizer___ 15.39. 240 Acid phosphate 15 2 0.7 -2.45 200 Kainit_______ __ Bus. 13.6 -11.2 Bus. 2.4 $-1.08 -2.72 9.9-1.3 4.1 .1 8.0-2.8-3.64 . .9 14.0 9.5 -1.12 -3.00 - 9 11 200 240 200 C. S. MealKainit------ --- Acid phosphate-- 19.5 5.7 -0.95 9.8 0.5 5.68 200 C. S. Meal_____ 240 Acid phosphate-100 Kainit --No fertilizer--___ 15.8 12.2 2.8 -2.86 .9.0 8.1-1.0 -6.18 210 Acid phosphate-) 12 100 Kainit________ 100 Nitrate of soda 26.6 14.4 7.58 15.5 6.5 0.32 MARSHALL COUNTY, 6 MILES SOUTHWEST OF BOAZ. J. ROBT. SMITH 191.2. Light colored sandy soil with yellow stiffer subsoil. This field had been in cultivation several years. Tile preceding crop was cotton. same numnber of plants. Each plot had' the No fertilizer or combination' of fertilizer increased the yield sufficiently .to be notably profitable. ETOWAH COUNTY, 3- / MILES WEST OF STEELE. J. T. HAWKINS 1913. Greyish yellow f latwoods-soil, with yellow clay subsoil. This field had been cleared about 13 years of its original growth of oak, hickory and short-leaf pine. The largest increase, 10.2 bushels per acre was ob- 199 tamed on Plot 9, fertilized as follows: 200 pounds cotton seed meal per acre, 240 pounds acid phosphate per acre and 200 pounds kainit per acre. The largest net profit from fertilizers, $4.98 per acre was obtained by the use of acid phosphate alone. As may be seen in the table of increases, page 211 in every case, nitrogen and phosphorous increased the yield, while the results with potash were variable and less marked. Experiments in Etowah County. 1913 NEAR STEELE 0, 1914 NEAR STEELE 0 a, a, oW o o e KIND OF FERTILIZER o(U u ~IQ + ° °Q Nr E'- ~ Bus. 24.2 24.4 16.3 CC: u- 1 2 3 Lbs. Bus. 19.7 200 Cotton seed meal 240 Acid phosphate____ 23.4 No fertilizer ______ 16.0 Bus. 3.7 7.4 -1.4 $ 0.33 4.98 -2.66 Bus. 7.9 8.1 2.3 $ 4.11 5.61 0.67 4 7 - 200 Kainit______.____ 200 C. S. Meal-----240 Acid phosphate-3 200 C. S. Meal______ 200 Kainit___2______ 14.1 18.9 23.3 23.9 36 14.0 8.3 9.4 2 8 8 200 Kainit 200 C. S. Meal __ -9 240Acinitphosphate- 240 No fertilizer------Acid phosphate 10.2 6.7 -17.4 .2 0.0 3.10 0.65 _ --.0 4.63 4.79 .3 1994207268 l9 6. 32.3 33.2 79 11.9 11.3 .9 10 11 { 27.6 25.7 200-C. S. 240 Acid 100 Kainit -_.__ No fertilizer-----20.7 _23.4 240 K ii__-__ 10 Acid phosphate95 88 100 Nitrate of 2.-. Meal--phosphate- __ __ _ __ soda- 2 4 25 3. 65 31 31 64 64 J. T. HAW KINS-1914. On the same plots as the above experiment a similar experiment was conducted in 1914. In this dry year, on this typical flatwoods soil, every fertilizer and every combination of -fertilizers were profitable. With the exception of kainit alone, which 200 m-ade a profit of only 67 cents, no fertilizer or fertilizer combination made less than $4.00 profit. The largest increase, 16.4 bushels per acre, and the largest profit, $10.08 per acre, were obtained on Plot 5, fertilized with a mixture of cotton seed meal and acid phosphate. Increases of 13.1 bushels and 12.6 bushels and profits of $6.41 and $6.94 were obtained respectively from Plots 12 and 6. The average increase due to cotton seed meal was 7.6 bushels; to acid phosphate, 5.4 bushels; and to kainit, only 0.6 bushels. Nitrate of soda applied late was slightly more profitable than was cotton seed meal applied at planting time. MARION COUNTY, 3 MILES NORTHEAST OF GUIN L. S. BOWLAN- 1914. Gray sandy soil with stiffer light red subsoil. This creek bottom land had been in cultivation 50 or ,more years. The preceding crop was cotton. The stand was good. The increases were small and about equal on the plots receiving a complete fertilizer, and on Plot 5, which received phosphate and cotton seed meal. Cotton seed meal was superior to nitrate of soda and more effective than phosphate. Potash was not needed. L. H. BOWLAN-1913. Mr. L. H. Bowlan conducted an experiment on the same farm and on similar soil in 1913. The results were inconclusive. (See page 210.) 201 Experiments in Marion and Walker Counties. 1914 1912 [ GUIN a, J JASPER 0~ ~a 0 Z~ 1 Lbs. 1 KIND OF °.N So ° S FERTILIZER Ca Bus. 29.3 Bus. 0.00.0 Bus. 13.7 200 Cotton seed meal Bus. 7.4 2 3 5 6 7 8 240 Acid phosphate____ 30.8 No fErtlizer_______ 29.36. 4 0 ant29.8 200 C S.3eal 32.9 240 Acid phosphate-200 C. S. Meal--- 32.1 200 Kainit ---j--200 Kainit_____.. _ _ 98 1.5 -0.33 041 $-3.00 4.24 1.60 2.28 0.88 0.4 -1.04 6.9 3.4 -1.6212.0 2.6 -2.06 11.4 0.1 -1.32 4.6 1.00 3.5 No fertilizer_____ 29.68 1.0 -2.1815.4 3.7 4.0 240 200 200 240 200 200 Acid phosphate Kainit--------C. S. Meal______ Acid phophate- 29.9 32.0 6.7 8.7 -2.75 --- 17.7 Kainit________ C. S. Meal 1020Acinitph 11 osphate- -----31.6 26.9 29.5 1.78 15.2 6.0 -0.58 n 100 240 F12~ 1100 Kainit ___.. No fertilizer.______ Acid phosphateKainit_____ --2.4 -3.22 9.5 87 92 24 100. Nitrate of soda -- WALKER COUNTY, 6 MILES EAST OF JASPER. D. B. LEwIs-1912. Light gray loam with yellow clay subsoil. This field had been long in cultivation. The stand was uniform. ed The largest increase, 9.2 bushels per acre was by Plot 12, fertilized as 240 pounds acid phosphate per acre. 100 pounds kainit per acre. 100 pounds nitrate of soda per acre. The largest net profit, $4.24, was obtained on the plot fertilized with acid phosphate alone. As may be seen from the table of increase on page 211 the average increase was greater from acid phosphate in all combinations than from either nitrogen or potash. Nitrate of soda was superior to cotton ,,c .d meal. follows: afford- 202 CLAY COUNTY, 3 MILES NORTH OF LINEVILLE J. H. RUSSELL-1914. Gray soil with stiffer red subsoil. Mr. Russell. states that this upland field had been in cultivation 54 years. Cotton had been the preceding crop for at least 3 years. A uniform stand was secured on all plots. No fertilizer or combination of fertilizers gave increases large :.enough to be profitable. On Plots 9 and 10 increases of 6.8 and 6.3 bushels per acre, respectively, were obtained. However, these gains were not sufficient to afford profits of over 29 cents per acre. Experiments in Clay County. 1914 LINEVILLE 0 1914 ASHLAND 0 KIND OF FERTILIZER 0_C-_ °' 14-_ -.) N 1 2 Lbs. 200 Cotton seed meal 240 Acid phosphate____ Bus. 14.4 14.6 Bus. 0.2 $-2.82 0.4 -1.32 rus. 18.7 14.1 1~us. 3.5 -1.1. 3 4 5 No fertilizer-- - 200 Kainit______ 200~ C. S. Meal. 14.2 __ ___ _ _ 15.2 14.4 -0.2 -1.58 13 5 -2.1 1.5 15-.3-5.-04-50 -. -2.67 -3.29 -6 0.15 240 200 Acid phosphateC. S. No fertilizer-- 6 200 Kainit 7 Meal139 139 --- -. 5 25 -57 .7 .3 145 145 3. - 19 19 -. 1 2. .6 81 240 Acid phosphateS200 Kainit 200 C. S. Meal- 15.8 188 _ _ 9 10 11 12 240 Acid phosphate- -- 23.5 188 .5-0.3 - 16.8 39 _ _ __- - 1 -. 4 -. 4 6.8 0.04 0.21) 16.6 17.3 0.5 -5.63 200 KainitI 200 C. S. Meal ___ 240 Acid phosphate- _23.5 100 Kainit ___ J_ No fertilizer- --.17.6 200 Acid phosphate 100 Kainit - 6.3 _ _ ___ 3.7 -2 1.5 -4.03 - _ _ 15.4 05 23.6 8.2 21.3 2.00 100 Nitrate of soda 203 CLAY COUNTY, 4-1/2 MILES WEST OF ASHLAND W. M. UPCHURCH-1914. Yellowish clay loam, with red clay subsoil. This upland field had been in cultivation about 15 years. The stand of corn was uniform. Nitrogen was the only fertilizer constituent that invariably afforded an increase in the yield of corn (see page 211) and this increase was usually too slight to be profitable. In this dry year phosphate and potash seemed to be slightly harmful. By far the largest increase in yield, 8.2 bushels per acre, and the largest profit due to fertilizers, $2.00 per acre, was obtained on Plot 12, fertilized as follows: 240 pounds acid phosphate per acre, 100 pounds kainit per acre and 100 pounds nitrate of soda per acre. Nitrate of soda applied June 6, at the rate of 100 pounds per acre was more effective and profitable than cotton seed meal employed before planting at the rate of 200 pounds per acre. TALLAPOOSA COUNTY, 1/4 MILE EAST OF CAMP HILL W. T. LANGLEY-1914. Dark sandy loam, with yellowish subsoil. This field had beei long in cultivation. The two crops preceding the corn experiment had been wheat and corn. This field was in fair state of fertility and yielded more than 30 bushels of corn per acre without fertilizer. The largest yield, 43.2 bushels per acre and the largest increase in yield due to fertilizers, 9 bushels per acre, were obtained on Plot 12, fertilized as follows: 240 pounds acid phosphate per acre, 100 pounds kainit per acre and 100 pounds nitrate of soda per acre. This plot also afforded the largest net profit due to fertilizer, $2.72 per acre. All three constituents, nitrogen, phosphorus and potash, were slightly effective. (See page 211), but usually not to a sufficient extent to yield a profit. 204 Experiments in Tallapoosa and Walker Counties 1914 CAMP HILL 1914 LAFAYETTE 2 -1 W OF FERTILIZER Q 2 yaIND w u 2 c2 Lbs 1 200 2 3 4 5 240 200 200 240 200 200 240 200 200 240 200 200 240 100 100 100 6 7 Cotton seed meal-Acid phosphate -No fertilizer--.----Kainit____ _____ C. S. Meal______ Acid phosphate__} C. S. Meal-Kainit__________ No fertilizer_____ Bus. 30.0 30.5 29.7 32.6 35.2 33.7 34.7 Bus 0.3$-2.73 0.8 -0.96 1.6 3.0 0.01 Bus. 21.5 20.0 Bus. 6.8 5.3 $ 3.12 3.09 14.7 16.0 1.4 -0.14 0.2 -4.22 3.36.6-0.14 3.7 -2 05 15.6 1.2 -3.32 -_- 14.3 8 10 11 12 37.9 Acid phosphate Kainit____3_____1 C. S. Meal______ 41.1 Acid phosphate -____ Kainit C. S. Meal,__ _ 38.0 Acid phosphate Kainit____ No fertilizer_______ 34.2 43.2 . 12.0-3.6-9.32 20.0 1___ 4 7 3.81 1 96 __6.89. 272 240 Acid phosphate__ Kainit Nitrate of soda ---- 9.0 2 CHAMBERS COUNTY, 1/4MILE NORTH OF LAFAYETTE. T. C. KEY-1914. Stiff red soil with red subsoil. This upland field had been long in cultivation. The preceding crop was corn. The stand was uniform, 218 plants to each plot of 1-16 acre. Neglecting Plot 12, which was apparently richer in this dry year than the others, we find that wherever more than 240 pounds per acre of any fertilizer employed, the increase was not sufficient to afford a profit. However, cotton seed meal applied alone afforded a profit of $3.12 per acre, and acid phosphate used alone gave a profit of $3.09 per acre. was 205 CLEBURNE COUNTY, 4 MILES SOUTH OF HEFLIN W. J. CAMPBELL-1914. Fine dark gray loam with yellow clay subsoil. This bottom land had been in cultivation possibly 4years. The preceding crop was corn. On this rich 1 ttom soil the largest increase, 17.2 bushels per acre, and the largest profit, $9.40 per acre; were obtained from Plot 9, fertilized with a completefertilizer containing 200 pounds cotton seed meal per acre, 240 pounds acid phosphate per acre and 200 pounds kainit per acre. With only two exceptions (See page 211) every ferti lizer and every combination of fertilizers gave an increase in the yield. Every fertilizer and every combination of fertilizers gave a profit except where a mixture of kainit and cotton seed meal was used and under the conditions of other seasons this might prove profitable. Cotton seed meal was slightly less effective than wasnitrate of soda when both were used in connection with acid phosphate and kainit. W. J. CAMPBELL-1913. A similar experiment by Mr. Campbell, in 1913, proved inconclusive because of lack of uniformity in the :soil. (See page 210.) 206 Experiments in Cleburne and Talladega Counties. 1914 HEFLIN C 1912 TALLADEGA KIND OF FERTILIZER oO° V°; Q 140 4- 1 2 3 Lbs 200 Cotton seed meal 240 Acid phosphate No fertilizer------- Bus. 53.1 50.0 46.6 Bus. 6.5 $285 3.4 2.38 -37.9 Bus. 45.8 45.2 Bus. 7.9 $3.32 7.3.4.16 4 6 7 8 200 200 240 200 200 9 r 240 200 200 240 200 200 101 11 240 100 100 121 r 8 9.5 -9.00 Kainit____---57.2 10.2 7.730 4 C. S Meal710.3 Acid phosphate-2 -3.1 -1.92 -1.61 42.1 50.8 3.1 C. S. Meal 5.8 3.-1.1-2.-3.-19 Kainit No fertilizer_______ 48.1--------------47.6 Acid phosphate-58.6 11.1 6.91 56.4 11.2 Kainit__________ C. 8. Meal_____ 41 Acid phosphate4_ 09 9.,55 8 Kainit.17 C. S. Meal__ 4.07 53.1 13.8 5.66 Acid o e 56.810.5 Kainit__________ No fertilizer ----45.737.8 -- ------ 5.88 240 Acid phosphate-Kainit-------- 100 Nitrate of soda - S58.1 12.4 5.78 50.1 12.3 4.96 TALLADEGA COUNTY, 7 MILES NORTHWEST OF TALLADEGA. J. M. HOWLNGTON, on the farm of J. C. WALLIS 1912 Dark, creek-bottom land. This land had been in cultivation only 5 years and produced without fertilizers more than 37 bushels per acre. The largest increase from fertilizers, 13.8 bushels per acre, was afforded byseed mealfertilized as follows : Plot 10, per acre, 200 pounds cotton 240 pounds acid phosphate per acre and 100 pounds kainit per acre. per acre. This plot made 53.1 bushels of corn per acre, and the fertilizer applied on it afforded a net profit of $5.66 Apparently phosphate was first in efficiency (See page 211) followed by nitrogen. The results with potash were irregular and conflicting. 207 INCONCLUSIVE EXPERIMENTS. In COLBERT COUNTY, an experiment conducted by G. H. Harris, in 1914, 2 miles East of Tuscumbia, proved inconclusive because of irregularities in the yields. (See page 209.) In LAWRENCE COUNTY, 2-1/ miles Southeast of Courtland, W. E. Hotchkiss, in 1912, made a test of fertilizers on corn. The results proved inconclusive on account of differences of yields on several unfertilized plots. (See page 209.) In LAWRENCE COUNTY, 3 miles West of Courtland, Mr. D. D. Saunders made in 1913, a fertilizer experiment with corn which proved inconclusive because of the variations in the yields of several unfertilized plots. (See page 209.) In LIMESTONE COUNTY, 1 mile Southeast of Athens, Eighth District Agricultural School conducted a fertilizer experiment with corn in 1913 on typical red land. This proved inconclusive because of variations in the yields of the several unfertilized plots. (See page 209.) In MORGAN COUNTY, an experiment conducted by L. B. Wyatt, in 1912, two miles Southeast of New Decatur, proved inconclusive because of irregularities in the yields. The results suggests that on this typical Tennessee Valley soil, a complete fertilizer containing 100 pounds of kainit was best under the conditions of this particular season. (See page 209). In MADISON COUNTY, an experiment conducted by W. H. Johnston, in 1914, 5 miles West of Huntsville, proved inconclusive because of lack of uniformity in the soil. (See page 209.) In MADISON COUNTY C. E. Hoy conducted an experiment 4 miles Northwest of Huntsville, in 1912, also in 1913, both of which proved inconclusive because of lack of uniformity of the soil. (See page 209.) In JACKSON COUNTY, 4 miles North of Stevenson, experiments conducted by J. C. Tally in 1913, also in 1914, proved inconclusive because of lack of uniformity in the soil. (See page 210.) In DEKALB COUNTY, 3 miles South of Collinsville, T. A. Ventress, in 1913, also in 1914, made an experiment on dark gray gravelly soil, with reddish subsoil. The results were inconclusive because of variations 208 in the fertility of the three unfertilized plots. (See page 210.) In MARION COUNTY, 3 miles Northeast of Guin, an experiment conducted by L. H. Bowlan, in 1913, proved inconclusive. (See page 210.) In JEFFERSON COUNTY, 5 miles West of Birmingham, near West End, W. Mims conducted an experiment in 1913. The results were inconclusive because of lack of uniformity in the soil. However, they suggest that nitrate of soda was beneficial to the crop that particular year. (See page 210.) An experiment in BIBB COUNTY, conducted by J. D. James 1/4 mile Southeast of Brent, in 1914, proved inconclusive because of lack of uniformity of the soil. (See page 210.) In CLEBURNE COUNTY, an experiment was conducted by W. J. Campbell, in 1913, 4 miles South of Heflin. It proved inconclusive because of lack of uniformity in the soil. (See page 210.) In CALHOUN COUNTY, 1-1/2 miles East of Oxford, E. L. Turner, Jr., in 1914, conducted an experiment, which proved inconclusive. inconclusive experiments in Colbert, Lawrence, Limestone, Madison and Morgan Counties. 1914 TJSCUMBJA 1912 COURTLAND 1913 COURTLAND 1913 ATHENS 1914 HUNTSVILLE 1912 HUNTSVILLE 1913 HUNTSVILLE 1912 N. DEC G. H. Harris W. Hotchkiss 000 D.D. Sanders 0o 8th D. A.S.jW. Johnston C. E. Hoy C. E. Hoy o L. B. W o o 0a N " " >a KIND OF f" N o a N t" r 0 FERTILIZER L. t ... Q 'Q N -- " a- r Uw-3 a , -a a -a -+ U . 1 2 3 Lbs. Bus. 200 C. S. MeaL__40.0 240 Acid Phosphate ___ 44.2 No fertilizer ____ _ 39.0 Bus. 1.0 5.2 _____ Bus. Bus. 16.6 0.8 15.6 -0.2 15.8 - Bus. Bus. 15.9 -5.4 16.1 -5.2 21.3 ______ Bus. 10.4 7.9 8.0 Bus. 2.4 -0.1 4 5 1 200 Kainit____________ 37.1 -0.8 200 . S. peal_____ 30.0 -6.8 240 Acid Phosphate 200 Kainitel-34.26 3.9 200 Kainit 19.4 17.3 12.6 5.0 4.4 1.1 21.2 22.7 19.3 2.3 6.2 5.3 6.2 -1.0 6.2 -0.3 7.2 1.5 Bus. Bus. 14.9 7.1 12.8 5.0 7______ 716.1 . 5.2 -5.0 12.6 0.0 16.4 1.4 Bus. 12.0 12.1 8.7 14.9 Bus. 5.2 5.3 1.5 7.3 Bus. 28.0 27.9 25.9 32.0 35.2 Bus. 11.9 11.8 7.0 10.2 7.4 - 7.8 19.2 22.4 18.7 Bus. 21.9 17.1 - 7.3 -. 9 200 C. S. Meal______ 10' 11 12 240 Acid Phosphate_ 100 Kainit -____ No fertilizer____ 240 Acid Phosphate_ 100 Kainit---------_. 100 Nitrate Soda (late) 52.3 39.5 40.6 14.0 _-- 10.5 -0.6 11.4 - 9.8 8.5 19.8 0.5 ____ 2.0 -1.2 2.6 9.6 7.0 24.2 22.9 39.6 2.7 ___ 11.5 -2.4 15.8 22.0 6.2 29.0 29.0 0.4 38.9 11.6 31.2 2 - 1.1 6.3 -5.1 11.3 16.7 16.2 -12.8 1 Inconclusive experiments in Jackson,. DeKa lb. Marion, Jefferson, Bibb and Cleburne Counties. 1913 STEVENSON 0 1914 STEVENSON 0 1914 CoLLINSV'LE 0 1913 COLLINSV 'LE 0 1913 GUIN 0 1913 BIRMINGHAM 0 1914 BRENT 0 1913 HEFLN KIDO0ooa S FERTILIZER 0 a ca w n a u u aQa i a.0. .. U *a) Qs. UQ) W.., C+' 0 .. ~ U ) 0 a)0a . Q~ -' V 0) . Q - Bus Lbs. Bus. 1 200 Cotton seed meal_ 16.3 -2.3 Q 0 IBTBus. 38.0 00 Ja 0 0 *a 00 a 00 ~j) Bus. 0 B us. Bus. Bus. 3.2 Bus. 34.6 2 3 4 240 Acid phosphate__ - . No fertilizer-200 5 200 Kainit------- 14.8 -3.8 18.6 12.4 -5.1 42.8 40 3 45.5 -2.3 40.5 -6.7 Bus. Bus. 22.1 2.5 3.7 4.9 ___ 5.6 40.7 37.3 36.8 3.4 0.4 45.3 -___41.3 37.3 4.0 19.6 -4.0 23.6 23.9 0.7 -1.5 Bus. Bus. 11.2 15.4 12 -1.0 Bus. Bus. 22.1 8.4 3.2 -3.2 ___2 6.7 -3.7 2.7 16.4 13.7 ___ 17 9 1.6 Bus. 3 56.8 40.9 2. 18 2 20.4 -3. {1 6 5 ( C. S. Meal------Acid 240 phosphate- 18.0 1.6 43.1 43.9 38.5 36.3 37.2 33.7 0.8 2.6 8.0 9.9 8.0 35.1 -4.7 32.3 38.2 28.1 22.3 21.8 5.4 0.0 -1.5 7.8 -0.8 9.3 5.0 - 18.1 -0.8 19.0 -2.4 24.0 27.0 -2. 39.2 .- 200 C. S. Meal___200 Kainit --- No fertilizer--- 13.3 -2.0 -6.7 5.8 2.5 1.1 0.8 1.8 ------ 3. 87 7. 2. . 7 1-14.2 15.5 17.2 19.6 12.1 ___ -8.7 3.8 3.5 41.3 8 9 10 240 Acid phosphate-L 200 Kainit \ -- 1.8 4.0 7.0 46.7 37.9 10.3 3.5 39.1 38.4 33.8 23.2 39.9 19.9 5.9 5.3 6.1 . 14.3 25.7 24.4 19.8 46.9 42.6 34.9 28.9 _-_-__ -__ 200 C. S. Meal 240 Acid phosphate-- 200 C 24 100 .Meal L_ 22.4 -7.5 28.8 21.6 20.1 -0.9 22.6 20.2 Acid phosphate- 31.6 -0.7 30.2 -_ 3.0 2.0 11 2 ---No fertilizer----Kainit- 240 Acid phosphate) 100 Kainit_____ 100 --12.8 4.0 13.3 1.2 30.7 0.5 36.0 34.5 12.9 25.6 __ 5.4 __ 17.7 __ 13.7 29.5 9.7 38.6 9. Nitrate of soda--_______________ _______________ Increase in bushels of corn per acre attributed to 200 pounds cotton seed meal, 240 pounds acid phosphate and 200 pounds of kainit per acre, respectively. Increase by adding cotton seed meal LOCALITY O 0 ab d, Increase by adding acid phosphate "a Increase by adding kainit C a) Cn -4 W at .= -Ze 0 N N L j +-+ 0 N 0~ . H~ E{ Tuscumbia-Harris ___-1911 Athens-E. D. A. S. __ 1912 Decatur-Holland 1913 Stevenson-Tally 1912 Hanceville-Williams 1913 Ashville-Jenkins & S 1912 Albertville-S. D. A. S. -1914 Boaz-Smith 1912 Steele-HawkinsGumn-Bowlan 1913 -------2.4 3.7 Steele-Hawkins--_- Jasper-Lewis.--__ 1912 Lineville-Russell _-__,_ 1914 ------1914 1914 1914 Bus. Bus. 4.3 -1.3 6.7 2.9 2.7 -1.6 1.1 5.6 4.6 -3 5 0.1 6.6 4.2 0.2 0.3 0.9 Bus. Bus. 0.8 -2.1 8.0 7.3 3.7 2.2 7.5 5.5 1.0 3.4 1.9 6.2 1.2 5.0 6.9 10.8 0.4 6.0 Bus. 0.4 6.2 1.7 4.9 1.4 3.7 2.7 2.4 5.4 taus. Bus. Bus. Bus. Bus. 1.6 -4.0 0.8 -2.1 -0.9 3.5 -0 3 2.0 1.3 1.6 2.4 -1.9 2.2 0.7 0.9 1.0 5.5 4.8 2 8 3.5 8.1 0.0 3.0 5.4 4.1 -4.0 2.5 -2.7 1.6 -0 7 2.3 -1.7 -1.5 2.3 0.4 -1.3 Bus. 2.3 0.7 -0.9 Bus. -1.2 2.0 0.1 Bus. 1.5 -0.8 -1.1 Bus. 0.7 3.6 2.7 Bus. 0.8 1.4 0.2 -3.9 0.9 0.8 2.2 -2.8 -1.4 2.5 2.7 2.6 0.8 1.7 5.7 -0.1 -4.2 2.1 -1.6 1.4 -3.2 -0.2 2.7 1.7 3.2 2.1 1.9 -0.4 -0.8 1.8 0.8 0.6 0.8 7.4 4.0 4.6 2.9 5.6 -3.6 0.8 -1.5 4.6 7.9 0.0 8.3 1.9 10.3 2.2 4.0 2.7 7.6 1.7 8.1 1.5 8.5 3.4 5.6 0.6 -0.7 1.1 5.4 1.7 2.3 0.4 4.7 2.6 -0.2 -0.5 -4.5 0.3 0.6 0.7 Ashland-Upchurch_.- 0.0 -2.8 3.4 0.2 1.1 -1.3 3.5 0.7 0.2 2.0 4.3 3.1 0.7 1.1 1.9 ,-1.1 7.4 0.4 0.8 5.3 3.4 4.6 1.3 -3.9 6.6 2.7 -0.5 5.2 8.3 -2.4 5.9 3.2 -2.0 0.1 -0.2 Camp Hill-Langley-- La1 ayette-Key_______ Heflin-Campbell Talladega- Howington_ ---1914 1914 1914 1912 0.3 6.8 6.5 2.2 -1.4 -2.3 -0.2 6.9 -7.1 3.3 -4.7 6.1 1.4 -0.1 2.7 -3.8 1.7 -0.3 3.1 3.8 0.9 -4.8 14.1 6.4 2.9 -0.9 5.6 -2.1 1.6 1.4 10.2 0.2 3.5 -1.7 -5.4 -0.7 2.1 -1.5 4.1 5.3 0.9 1.7 1.4 -2.0 -0.1 7.9 -4.4 1.2 6.4 3.0 -2.4 2.9 1.9 2.7 7.3 3.0. -5.0 0.7 20.7 3.0 11.9 2.7 8.7 2.4 -9.5 -3.4 -4.2 7.7 -11.0 3.9 -5.6 -0.4 2.5 3.6 -6.6 6.9 1.9 -3.8 5.4 5.9 1.9 -2.8 0.5 Average-------- 3.5 0.2