8 2 SCIENTIFIC AGRICULTURE. 



A good four years' rotation is to allow the clover 

 to remain two years. In England, where corn is 

 not raised, a popular four years' rotation is 



First year Turnips or other root-crop 



Second " Barley 



Third " Clover 



Fourth " Wheat 



A six years' rotation : 



Clover Corn 



Wheat, two years Wheat 

 Clover 



185. For the tobacco-planter, a good rotation is 



First and second year Clover 

 Third year Tobacco 



Fourth " Wheat 



This will keep the land fertile, or even improve 

 it. For the cotton-planter 



First year 

 Second " 

 Third " 



In much of the cotton-growing region in the 

 South, cotton is grown year after year without 

 change, to the great detriment of the land, except, 

 perhaps, in river-bottoms, where the soil is im- 

 mensely rich and very deep. 



186. It is best in the above rotations not to re- 

 move the crop of clover, but let it lie on the ground, 

 and be turned under at the proper time. In fact, 

 there is no better way to improve land than by plow- 



