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the greatest importance to the agriculturist, for upon it is founded th© 

 theory of rotation of crops. 



The whole art of rotation consists in suiting the crops to the nature 

 of the polls, and varying them with each other in such a manner, that, 

 whilst the greatest amount of produce is raised off the land, still th© 

 Boil shall not be impoverished ; thus, when a grain crop is raised, a 

 quantity of phosphates and nitrogen has been extracted from the soil. 

 Reiurnin<x the straw to the ground in the shape of manure, will restore 

 the salts which have been abstracted, whilst the nitrogen may be re- 

 turned by growing green crops. A grain or white crop, should always 

 be succeeded by a gieen crop; by this means weeds will be eradicated, 

 and the fertility of the soil preserved. 



It is a remarkable fact that each grain crop has its particular green 

 crop, after which it thrives best; thus, after turnips, barley succeeds best; 

 after gra^s, oats ; after potatoes, or beans, or clover, wheat 



The following is a good five course rotation: 



1. Green crop or manured fallow. 



2. Wheat. 



3. Artificial meadow, (clover and grasses.) 



4. Pasture. 



5. Corn or oats. 



By this plan it will be seen that two crops of grain are never raised 

 off the same field in succession; that the clover is succeeded by pasture, 

 which is broken up for corn or oats. 



The following is a four course rotation, which in some cases will an- 

 flwer very well : 



1. Corn, potatoes or fallow, manured. 



2. Oats. 



3. Clover. 



4. Wheat. 



The on^y objection to this course, is that one grain crop, the oate^ 

 succeeds another grain crop, the corn ; but in the culture of maize, the 

 land being kept clear and well worked between the drills, is generally 

 in good heart for the next crop. 



Fallowing is another way of restoring the fertility of a soil, and haa 

 been used for that purpose since the earliest ages. Fallowing is not 

 much practiced in the improved system of husbandry, as it is found . 

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