EFFECT OF MIKOCKNOrs MAMIMO 



i:; 



nitrogen, rising from '21. \ cwt. to 33 and 41 cut. as the nitrogen 

 is doubled and trebled. It is thus seen tliat thi* wlieat crop is 

 very specially dependent upon the supi)ly of nitrogen in the 



Total Produce 

 per Acre 



7000 lb 



Plots 3i-4. 



[S^ Grain per Acre, lb 



Straw per Acre, lb 



Fig. 3.-Broadbalk Wheat. Effect of inereasing amounts of Nitrogen on th.- |.r...I... l.on 



of Wheat (Grain and Straw). AveniKc, .M years ( 1 s5-J-lW-')- 



The figures in the labels indicate bushels of grain .md cwt. of straw . 



