alent of these ingredients, in 200 pounds of cotton-seed £° a ° n d ts for 

 meal. 



137 



The first plot received cotton-seed meal alone 



—yield 17.5 bus. 



The second, phosphoric acid and potash and 

 Nitrate of Soda all applied with the seed 

 yield 20 . 8 bus. 



The third received only phosphoric acid and 



potash— yield p . 17 • 6 bus. 



The fourth received in addition to phosphoric 

 acid and potash applied with the seed, 

 Nitrate of Soda as a top-dressing— yield . . 19.4 bus. 



Barley. 



This crop does best on a strong clay loam, but the 

 soil must not be rich in organic matter. Soils naturally 

 rich in ammoniates are unfavorable, as one of the most 

 important points in high-grade barley is a complete 

 maturity of the grain. With soils rich in vegetable 

 matter, the supply of the only digestible Nitrogen or 

 what is exactly the same thing, Nitrates, continues so 

 late in the season that maturity is retarded seriously. 

 About 400 pounds per acre of fertilizer should be applied 

 broadcast before seeding. As soon as the grain is "up," 

 top-dress with 150 pounds of Nitrate of Soda per acre. 

 If the soil is very rich, apply only 100 pounds of Nitrate. 



We would recommend drilling in with the Barley or 

 Oats a mixture of 250 pounds acid phos- Barlev 

 phate and 100 pounds Nitrate of Soda and J ats 

 per acre, and if the land is very sandy 

 add 100 pounds sulphate of potash to the mixture. 



In an experiment at Woburn, made for the Royal 

 Agricultural Society of England, by the late Dr. 

 Voelcker, the following results were obtained: 



Mineral manures and sulphate ammonia. . 36 . 75 bushels per acre. 

 Nitrate 275 lbs. and minerals 42.50 bushels per acre. 



Gain for Nitrate, 16 per cent. 



The ammonia salt and the Nitrate used contained 

 the same amount of nitrogen plant food. Compared 

 with cotton-seed meal, 124 pounds of Nitrate of Soda 



