204 



CROPS GEOWN IN ROTATION 



main to the seven occasions on which clover has been taken 

 during the sixteen complete courses of the experiment. 



The diagram, Fig. 43, shows in a graphic form the benefit 

 to the whole rotation of the growth of clover, even when the 

 root crop receives nitrogenous manures. 



Wheat 

 Clover 



Barley 



Roots 



After Clover. 



Wheat 



Fallow 

 nil. 



Roots 



Barley 



After Fallow. 



FIG. 43. Comparative Effect of Clover or Bare Fallow on the succeeding Crops in 

 the Rotation. Total Produce In 1000 Ib. for Clover, Wheat, and Barley, 

 and in 100 cwt. for Roots. 



IV. EFFECT OF MANURIAL RESIDUES ON SUBSEQUENT 



CROPS. 



It has already been stated that the manures on this experi- 

 mental field are applied only to the root crop, the three 



