The Bulletin. 83 



available phosphoric acid, 9.G per cent; potash, 2.0 per cent; nitro- 

 gen, 3.G per cent (equal to ammonia, 4.4 per cent). 

 No. 11— 



Acid pliospliato, IG per cent phosphoric acid 1,.310 pounds 



Dried blood, 13 per cent nitrof^en GOO pounds 



Muriate of potash, 50 per cent potash 90 pounds 



2,000 pounds 



This mixture is quite concentrated on account of the high-grade 

 phosphatic and potassic materials used, and will contain: available 

 phosphoric acid, 10.5 per cent; potash, 2.3 per cent; nitrogen, 3.9 

 per cent (equal to ammonia, 4.7 per cent). 



No. 12— 



Bone meal, 22.5 per cent phosphoric acid and 3.7 per cent 



nitrogen 950 pounds 



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

 phoric acid and 1.5 per cent potash 975 pounds 



Muriate of potash, 50 per cent potash 75 pounds 



2,000 pounds 



This mixture is a concentrated one on account of the high-grade 



phosphatic and potassic materials used, and will contain: available 



phosphoric acid, 11.9 per cent; potash, 2.6 per cent; nitrogen, 5.0 



per cent (equal to ammonia, 6.0 per cent). 



No. 13— 



Acid phosphate, 14 per cent phosphoric acid 585 pounds 



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



and 1.2 per cent potash 1,375 pounds 



Kainit, 12.5 per cent potash 40 pounds 



2,000 pounds 



This mixture will contain: available phosphoric acid, 5.0 per cent; 

 potash, 1.1 per cent; nitrogen, 2.1 per cent (equal to ammonia, 2.6 

 per cent). 



Cotton Seed. — Cotton seed may replace the meal in preceding 

 formulas containing meal bj allowing 2 pounds of seed for one of 

 meal. 



Nitrate of Soda. — This material is quick-acting because of its easy 

 solubility in water. For this reason, when used in a considerable 

 quantity in fertilizers at time of planting, especially on liglit sandy 

 land, there is considerable danger of its being leached beyond the 

 reach of the roots of the plants before they can use it. On clay lands 

 and loams having good subsoils, to them this danger does not exist, 

 certainly not to the extent that it does on light soils. A small amount 

 of nitrate of soda in the mixture will give the crop a quick start and 

 make its cultivation easier and more economical. Formula iSTo. 3 

 has been arranged with this idea in view, and in ISTo. 2 one-half the 

 nitrogen comes from nitrate of soda. On light lands it would likely 

 be better to omit the nitrate from the mixture and apply it as a top 



