56 The Bulletin. 



necessity of this for cotton. Cotton is generally grown on ridges. 

 This is necessary on wet soils, but on all fairly well-drained upland 

 and sandy soils we are convinced that level and frequent shallow cul- 

 tivation, as was indicated for corn, is the best and most economical 

 method ta follow in growing cotton. Ridge culture may give better 

 results in very wet years, but, taking the seasons as they come, the 

 advantage will lie, we think, with flat culture. 



Fertilizers for Cotton. — The preliminary remarks regarding fer- 

 tilizers for corn also apply to cotton, the following formulas being 

 offered tentatively and as the result of our best judgment, after study- 

 ing the best obtainable data on the subject : 



j^Q ^_ For Cotton on Land in Fair Condition. 



Acid phosphate, 14 per cent phosphoric acid 895 pounds 



Cotton-seed meal, 0.59 per cent nitrogen, 2.5 per cent phos- 

 phoric acid and l.o per cent potash 790 pounds 



Kainit, 12.5 per cent potash 315 pounds 



2,000 pounds 



This mixture will contain : available phosphoric acid, 7.2 per cent; 

 potash, 2.6 per cent; nitrogen, 2.6 per cent (equal to ammonia, 3.2 

 per cent) . 



No. 2— 



Acid phosphate, 14 per cent phosphoric acid 1,015 pounds 



Cotton-seed meal, G.59 per cent nitrogen, 2.5 per cent phos- 

 phoric acid and 1.5 per cent potash 415 pounds 



Nitrate of soda, 15 per cent nitrogen 180 pounds 



Kainit, 12.5 per cent potash 390 pounds 



2.000 pounds 



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

 soda and the other one-half by cotton-seed meal. This mixture will 

 contain: available prosphoric acid, 7.6 per cent; potash, 2.7 per cent; 

 nitrogen, 2.7 per cent (equal to ammonia, 3.3 per cent). 



No. 3— 



Acid phosphate, 14 per cent phosphoric acid 955 pounds 



Cotton-seed meal, G.59 per cent nitrogen, 2.5 per cent phos- 

 phoric acid and 1.5 per cent potash 605 pounds 



Nitrate of soda, 15 per cent nitrogen 90 pounds 



Kainit, 12.5 per cent potash 350 pounds 



2,000 pounds 



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

 soda and the other three-fourths by cotton-seed meal. This mixture 

 will contain: available phosphoric acid, 7.4 per cent; potash, 2.6 per 

 cent; nitrogen, 2.6 per cent (equal to ammonia, 3.1 per cent). 



No. 4~ 



Acid phosphate, 16 per cent phosphoric acid 830 pounds 



Cotton-seod meal, 6.59 per cent nitrogen, 2.5 per cent phos- 

 phoric acid and 1.5 per cent potash 830 pounds 



Kainit, 12.5 per cent potash 340 pounds 



2,000 pounds 



