12 FIELD CROP PRODUCTION 



feeding values, and also in the general methods of their 

 culture, are usually included in this class. A more 

 detailed explanation will be found in the introductory 

 paragraph of the chapter on root crops. 



17. Miscellaneous crops. Under this head are grouped 

 all farm crops not included in any of the preceding 

 classes. As might be expected, these crops vary greatly 

 in their botanical relationship, culture, and uses. The 

 two principal crops of this group are the potato, which 

 is grown for the tubers, and tobacco, which is grown for 

 its leaves and is used as a stimulant. The latter is not 

 included in this book. 



18. Definition of terms. Several terms are employed 

 in field-crop literature, both in text-books and in the 

 agricultural press, that should be defined. Some of 

 them refer to a special use made of a crop, which 

 may be a member of any of the general groups previously 

 discussed, but usually belongs to the grain or forage 

 crops. 



A soiling crop is one that is cut green and fed green 

 directly from the field. Thus corn, if it is cut and thrown 

 over the fence to animals, or fed to them in the feed lot, 

 becomes a soiling crop. 



A green manure crop is one that is grown to plow 

 under or to disk into the soil to improve the physical 

 condition of the latter, and to increase its fertility. 



A cover crop is one that is seeded so as to make a growth 

 to cover or protect the soil in the field or orchard during 

 the winter. 



A catch crop is a crop sown between two regular crops. 

 Thus, if rye is seeded in the corn at the time of the last 

 cultivation, and the field is seeded to oats or some other 

 crop in the spring, the rye crop may be defined as a catch 



