The Bulletin. 87 



This mixture will contain: available pliosplioric acid, 9.8 per cent; 



potash, 3.4 per cent; nitrogen, 3.4 per cent (equal to ammonia, 4.1 



percent). 



JNo. 10— 



Acid phosphate, 16 per cent phosphoric acid 975 pounds 



Fish scrap, 8.25 per cent nitrogen and 0.0 per cent phos- 

 phoric acid 880 pounds 



Muriate of potash, 50 per cent potash 145 pounds 



2,000 pounds 



This mixture is considerably more concentrated than the others on 

 account of the high-grade materials used, and will contain : available 

 phosphoric acid, 10.4 per cent; potash, 3.6 per cent; nitrogen; 3.6 

 per cent (equal to ammonia, 4.4 per cent). 



No. 11— 



Acid phosphate, 14 per cent phosphoric acid 1,355 pounds 



Dried blood, 13 per cent nitrogen 510 pounds 



Muriate of potash, 50 per cent potash 135 pounds 



2,000 pounds 



This mixture will contain: available phosphoric acid, 9.5 per cent; 

 potash, 3.4 per cent; nitrogen, 3.3 per cent (equal to ammonia, 4.0 

 per cent). 



No. 12— 



Acid phosphate, 16 per cent phosphoric acid 1,295 pounds 



Dried blood, 13 per cent nitrogen 500 pounds 



Muriate of potash, 50 per cent potash 145 pounds 



2,000 pounds 



This mixture will contain: available phosphoric acid, 10.4 per 



cent; potash, 3.6 per cent; nitrogen, 3.6 per cent (equal to ammonia, 



4.4 per cent). 



No. 13— 



Acid phosphate, 14 per cent phosphoric acid 630 pounds 



Cotton seed, 3.1 per cent nitrogen, 1.3 per cent phosphoric 



acid and 1.2 per cent potash 1,190 pounds 



Kainit, 12.5 per cent potash 180 pounds 



2,000 pounds 



This mixture will contain: available phosphoric acid, 5.2 per cent; 

 potash, 1.8 per cent; nitrogen, 1.8 per cent (equal to ammonia, 2.2 

 per cent). 



Cotton Seed and Nitrate of Soda. — The remarks under corn regard- 

 ing these two fertilizing materials apply also to cotton, as do the sug- 

 gestions concerning the change in the quantity of nitrogen-supplying 

 materials in the formulas, should cotton follow peas or any other 

 leguminous crop. In Formula No. 3 one-fourth of the nitrogen^ is 

 supplied by nitrate of soda, with the view of giving the crop a quick 

 start, and in No. 2 one-half of the nitrogen comes from this source. 

 On light lands it will be good practice to omit this nitrate from the 



