52 The Bulletin. 



gressed far enough, we feel, to draw some conclusions in reference 

 to the best amounts and proportions of nitrogen, phosphoric acid and 

 potash for corn. As the results of the past four years' work have 

 not jet been published, the following formulas, based on the results 

 of the first two years' tests and tests in other States with similar soil 

 and climatic conditions, are given as good ones for corn: 



■^^ -^ Fo7' Corn on Land in Fair Condition. 



Acid phosphate, 14 per cent phosphoric acid 900 pounds 



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



jilioric acid and 1.5 per cent potash 9G0 pounds 



Kaiait, 12.5 per cent potash 140 pounds 



2,000 pounds 



This mixture will contain: available phosphoric acid, 7.5 per 

 cent; potash, 1.6 per cent; nitrogen, 3.2 per cent (equal to ammonia, 

 3.9 per cent). 



No. 2— 



Acid phosphate, 14 per cent phosphoric acid 1,045 pounds 



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

 phoric acid and 1.5 per cent potash 520 pounds 



Nitrate of soda, 15 per cent nitrogen 225 pounds 



Kainit, 12.5 per cent potash 210 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 phosphoric acid, 8.0 per cent; potash, 1.7 per 

 cent; nitrogen, 3.4 per cent (equal to ammonia, 4.0 per cent). 



No. 3— 



Acid phosphate, 14 per cent phosphoric acid 965 pounds 



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

 phoric acid and 1.5 per cent potash 750 pounds 



Nitrate of soda, 15 per cent nitrogen 110 pounds 



Kainit, 12.5 per cent potash 175 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, 7.7 per cent; potash, 1.7 per 

 cent; nitrogen, 3.3 per cent (equal to ammonia, 4.0 per cent). 



No. 4— 



Acid phosphate, IG per cent i)hosphorlc acid 835 pounds 



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

 phoric acid and 1.5 per cent potash 1.010 pounds 



Kainit, 12.5 per cent potash 155 pounds 



2,000 pounds 



This mixture will contain: available phosphoric acid, 7.9 per cent; 

 potash, 1.7 per cent; nitrogen, 3.3 per cent (equal to ammonia, 4.0 

 per cent). 



* 6.59 per cent nitrogen equals 8 per cent ammonia. 



