FERTILIZERS FOR COTTON 6l 



The amount of fertilizer to use depends on 

 several factors. The cost of the material used 

 in the fertilizer, the value of the land, the need 

 and condition of the soil, and the money value 

 of the crops to be grown must each be considered. 

 The greater the money value the crop represents 

 the larger the quantity of fertilizer that can 

 be used with profit. Large applications of 

 fertilizer never pay on thin, poorly prepared 

 soils. The amount of fertilizer to use is a 

 question of economics as well as of crop culture. 

 With 12-cent cotton the farmer can realize 

 large returns from 600 to 800 pounds per acre 

 on soils in good condition. 



Different Forms of Fertilizing Materials. 

 Elsewhere we have suggested some of the most 

 common sources of nitrogen, phosphoric acid, 

 and potash. In the formula given acid phos- 

 phate and cotton seed meal have been used. 

 They are the most commonly known and more 

 generally used. If for any good reason it is 

 desirable to substitute other materials in the 

 mixture, it can be readily done. Simply sub- 

 stitute in proper porportions. Ordinarily 

 nitrate of soda should not be used in making 

 mixed fertilizers. It is better to use it as a top- 



