24 THE LANDED INTEREST. 



by interposing a heavily-dunged green crop, 

 such as mangold, while the introduction of red 

 clover between the corn-crops is also found to 

 add greatly to the corn-producing power of the 

 soil. To attain a maximum paying produce, he 

 finds that the land should be dunged heavily 

 for mangold, to be followed with wheat, or 

 barley, or oats, according to soil and climate, for 

 several years in succession ; then interpose 

 clover, and follow it with corn-crops, keeping 

 the land perfectly clean, and manuring all the 

 corn-crops with nitrate of soda and superphos- 

 phate. When the land shows need of change, 

 begin again with heavily-dunged green crops. 

 Successive crops of barley he finds to pay 

 better, and are more certain than either wheat 

 or oats, and give more corn in proportion to 

 straw. If a heavily dunged green crop is occa- 

 sionally introduced, it is not necessary to give 

 any other manure to the corn-crops than nitrate 

 of soda and superphosphate. Potash (which 

 may be supplied by dung) is very necessary in 

 a grass-manure, especially for clover, which, 

 unlike corn, is injured by ammonia. The grass 



