228 FIELD CROPS FOR THE COTTON-BELT 



The above fertilizer would contain 7.2 per cent phos- 

 phoric acid, 1.6 per cent potash and 3.6 per cent nitrogen. 

 It is recommended that it be applied at the rate of 200 

 to 400 pounds to the acre. 



Hutchinson of the Mississippi Station says: 



" A mixture of 750 pounds of cotton-seed meal and 1250 

 pounds of acid phosphate to the ton makes a good fer- 

 tilizer for this state. From 125 pounds to 200 pounds of 

 this mixture should be used to the acre under cotton and 

 corn and should be applied in the drill or bed at the time 

 of preparing 'the land for planting." 



Duggar, of the Alabama Station suggests the following 

 fertilizer formulas for corn: 



(A) 100 pounds acid phosphate 1 ,, A , . 



_ , / \ (both just before planting) 



50 pounds nitrate of soda j 



50 pounds nitrate of soda, at second cultivation. 



(B) 100 pounds acid phosphate 1 ,, x , , , , , . x 



, 1- (both before planting) 

 200 pounds cotton-seed meal j v 



For very sandy soils: 



100 to 200 Ibs. acid phosphate 



100 Ibs. nitrate of soda (or 200 pounds cotton-seed meal) 

 50 to 100 Ibs. kainit. 



278. Some general principles. Experience and ex- 

 periment station results in the cotton-belt have revealed 

 some general principles underlying the use of fertilizers 

 in corn production that should be kept in mind. 



(1) Fertilizers are most profitable when used in connec- 

 tion with a well-planned cropping-system which supplies 

 the soil with an abundance of organic matter and most 

 of its needed nitrogen. 



(2) A suitable cropping-system, including the careful 

 saving of all manure, together with the use of a phosphatic 



