326 



SOUTHERN FIELD CROPS 



From a summary of the results of many tests made in 

 Alabama during three years and on numerous soils, it 

 appears that 5 pounds of stable manure exerted during 

 the year when apphed as fertilizer a greater influence on 

 the yield of cotton than did one pound of cotton seed 

 used without crushing or heating ; that the average yield 

 was increased by 101 per cent when stable manure was 

 used and by 64 per cent when cotton seed was used ; and 

 that to obtain an increase of one pound in the yield of 

 seed cotton there was required 3 pftunds of cotton seed, 

 or nearly 10 pounds of rich stable manure. 



296. Cotton seed vs. cotton-seed meal. — Most tests 

 show practical equality for a pound of nitrogen in cotton- 

 seed meal and in crushed or rotted cotton seed. To fur- 

 nish equal amounts of nitrogen requires the following 

 amount of each : — 



Nitro- 

 gen 



Phos- 

 phoric 

 Acid 



Potash 



2000 lb. of cotton seed contain .... 

 963 lb. of cotton-seed meal (6i per cent 

 nitrogen) contain 



62.6 

 62.6 



25.4 

 26.5 



23.4 

 16.3 



The average of a number of experiments on many soils 

 in Alabama showed that, as a fertilizer for cotton, one 

 pound of high-grade cotton-seed meal was equal the first 

 year to 2^^ pounds of crushed cotton seed. Later ex- 

 periments in Alabama and Georgia make a still more 

 favorable showing for the meal. Cotton seed exerts a 

 greater influence the second year than does the meal; 



