Sugar-cane, Cotton, and Tobacco 227 



In this formula one-half of the nitrogen is supplied by nitrate of 

 soda, and the other one-half by cottonseed meal. This mixture 

 will contain : available phosphoric acid, 4.8 per cent ; potash, 3.4 per 

 cent ; nitrogen, 4.8 per cent (equal to ammonia, 5.8 per cent). 



No. 3. Pounds 



Acid-phosphate, 16 per cent phosphoric acid 330 



Cottonseed meal, 6.17 per cent nitrogen, 2.8 per cent phos- 

 phoric acid, and 1.8 per cent potash 1590 



Muriate of potash, 50 per cent potash 80 



2000 



This mixture will contain : available phosphoric acid, 4.9 per cent ; 

 potash, 3.4 per cent ; nitrogen, 4.9 per cent (equal to ammonia, 6 per 

 cent). 



For the Piedmont Plateau soils, the same quantity of one 

 of the mixtures listed below should be used. 



No. 1. Pounds 



Acid-phosphate, 16 per cent phosphoric acid 1125 



Cottonseed meal, 6.17 per cent nitrogen, 2.8 per cent phos- 

 phoric acid, and 1.8 per cent potash 640 



Kainit, 12 per cent potash 235 



2000 



This mixture will contain : available phosphoric acid, 9.9 per cent ; 

 potash, 2 per cent ; nitrogen, 2 per cent (equal to ammonia, 2.4 per 



cent). 



No. 2. Pounds 



Acid-phosphate, 16 per cent phosphoric acid 1235 



Cottonseed meal, 6.17 per cent nitrogen, 2.8 per cent phos- 

 phoric acid, and 1.8 per cent potash 700 



Muriate of potash, 50 per cent potash 65 



2000 



This mixture will contain : available phosphoric acid, 10.9 per cent ; 

 potash, 2.3 per cent ; nitrogen, 2.2 per cent (equal to ammonia, 2.7 

 per cent). 



133. Rotations with cotton. Leguminous crops grown 

 either as green-manure or as forage crops in rotation with 

 cotton are especially useful in keeping up the plant-food and 



