The Montgomery advertiser., 1905-02-28
FOR COTTON ON DE-
 FERENT SOILS.
Press Bulletin No. n, Alabama Expe
 riment station.

riment station.
 The results of fertilizer experiments made in all parts of Alabama during the past four years under the direction of this station have today, (Feb. ID, been sent to the printer and will be issued as Bulletin No. 131. This will be sent free to all names now on our mailing list and to all others applying for 1t.
 The average of forty-one experi- ments throughout the State gave the following increase in yield of seed cot ton per acre:
 i55 lbs. seed cotton from the use of 240 lbs acid phosphate.
 s02 lbs. seed cotton from the above amount of phosphate. plus 200 lbs. cot ton seed meal;
 365 lbs. of seed cotton from a com plete fertilizer consisting of:
 240 lbs. acid phosphate;
 200 lbs. cotton seed meal;
 100 lbs. kainit.
 In nearly all of these forty-one ex- periments the use of fertilizers afford ed satisfactory prQfits after paying the cost of the fertilizer and the cost of picking and ginning the increased yield.
 From the use of the complete home mixed fertilizer made 6p as above of acid phosphate, cotton seed meal and kainit, the average of forty-one ex- periments showed net profits per acre after paying charges mentioned above. of $230.> s4.S6. and SIPS per acre. re- spectively, when the price of cotton Is calculated at 6, 8. or 10 cents per pound. Thus even on a basis of 6 cents per pound of lint cotton. the use use of fertilizers was on the average profitable. On a basis of cents for int ho vfy at ir .tn gle experiment was $21.50 per acre from the use of a complete home- l mixed fertilizer.
 Acid phosphate was more generally needed for cotton in Alabama soils than any other fertilizer tested. Cot ton seed meal was next in importance but gave its best results when used in connection with phosphate. Kainii gave variable results on different soils being on some soils useless or inju- rious, and on others highly profitable While the exact proportion of phos- , phate, cotton seed meal, and kainit | have not been proved for all soils. the | results of several hundred experiments made in all parts of Alabama under | the direction of the station suggest the following fertilizer formulas for cotton on the soils named: (a) For red lime lands in North Alabama: for the red clay lands occu- pying a triangular area in the central | portion of East Afabama-for the most part north of the Western Rail. l way and east of the Coosa river-and for the stiffer n-calcareous soils oi | the northwestern and western part oi the State: ' I 80 to 120 lbs. cotton seed meal pei l acre.
 1so to 24o lbs, acid phosphate per acre
 240 to s60 lbs. per acre. (b) For sandy soils in the eastern | and central parts of the State: | so to 120 lbs. cotton seed meal pel | acre. 160 to 24O lbs. acid phosphate per acre | 40 to GO lbs. kainit per acre.
 2so to 42O lbs. total per acre. (c) For the level lands of the south.
 ern long leaf pine region:
 60 to 120 lbs. cotton seed meal pei | acre.
 120 to 24o lbs. acid phosphate per acre | 60 to so lbs. kainit per acre.
 240 to 44O lbs. total per acre. | (d) For any well drained soil in anI | part of the State on which cotton i.
 known to be especially liable to blacl
 rust:
 12O to 160 lbs. cotton seed meal pei acre.
 so to 120 lbs. acid phosphate per acre | so to 120 lbs. kainit per acre. 2SO to 400 lbs total per acre.
 Bulletin No. 131 contains additiona
 suggestions on suiting the fertilizer t,
 the soil. and detailed results of fertil izer experiments made on soils men
 tioned above. and on other soils. J. F. Duggar. 1 Director Ala. Experiment Station.