GRASS FOR HAY 



25 



Cwt.perAcre 

 60 



Plots 3&12 



Fig. 7. — Effect of Nitrogenous Manures on the produce of Hay per acre. Average 

 over 47 years (1856-1902). 



Plot 3 and 12. Unmanured. 



Plot 7. Complete Mineral Manure, no Nitrogen. 

 Plot 9. Do. and Amm. -salts = 86 lb. N. 



Plot 11. Do. do. =129 lb. N. 



Plot 16. Do. and Nitrate of Soda = 43 lb. N. 



Plot 14. Do. do. =86 1b. N. 



only' half the amount of nitrogen is applied, but again as nitrate of soda. 

 The ^nitrate of soda gives the heavier yield, the herbage is also more 



