ROTATION OF CROPS. 



245 



and in others not much more than, half as much lime as the 

 rotation ones. 



It is remarkable, however, that whilst without manure the Effect of 

 rotation bean-crops contained only from 15 to 16 lb. of lime, manures - 

 the clover contained 67.84 and 59.10 lb. ; with superphosphate 

 the beans gave 18.68 and 20.71 lb., and the clover 158.62 and 

 184.52 lb. or about eight times as much as the beans; and 

 lastly, with the mixed manure, the bean-crops contained 

 26.57 and 27.71 lb., and the clover 181.75 and 195.14 lb. of 

 lime, or about seven times as much as the beans. 



TABLE 65. — Average amounts of Lime per acre per annum in the 



EOTATION, AND IN THE CONTINUOUSLY GROWN, LEGUMINOUS CROPS. 



BEANS (6 COURSES), CLOVER (2 COURSES), OR FALLOW. 



/ Rotation . 

 J Continuous 





Rotn. +or-cont. 



{Rotation . . 

 Continuous . 

 Rotn. -for -cont. 



( Rotation . 

 Total \ Contmuous 



(] 



>. Rotn. -for -cont. 



Total 



J Rotation . 

 "( Continuous 



Average of 8 courses, ) 

 beans and clover j 



lb. 



1.15 



0.47 



0.68 



14.61 



7.85 



6.76 



15.76 

 8.32 



67.84 

 ? 



lb. 



1.14 



0.47 



28.78 



26.631 



lb. 



1.10 



0.52 



53.67 



lb. 



1.32 



0.52 



lb. 



2.10 



1.24 



65.36 



lb. 



2.38 

 1.24 



25.33 

 15.08 



10.25 



27.71 

 16.32 



11.39 



69. 5T 



1 Probably crop too low owing to a dell. 



An increased amount of lime is, therefore, even more Function 

 directly connected with increased luxuriance and increased f ll ™> e ™ 

 production, than is an increased amount of potash taken up. growth. 

 Then, again, the increased amount of potash was apparently 

 more or less directly connected with tendency to maturation 

 or seed-formation ; but the lime is found chiefly in the straw 

 of the beans, and to be enormously increased in amount in 

 the clover, which does not ripen, but is cut whilst still in the 

 vegetative condition. The indication is, therefore, that the 

 lime is, both actually and as compared with the potash, much 



