Forms of Double-cropping 417 



Companion-cropping. 



Ill companion-cropping, or the growing of two kinds of 

 plants on the land simultaneously, the following items are 

 to be considered : ( 1 ) the crops should be such as will 

 mature at widely different seasons ; ( 2 ) one crop should be 

 of distinctly less importance than the other, or be a " catch 

 crop (3) the crops should be such as will profit by the 



224. Companion-cropping, in which three crops are growing at the same time. 



The main crop is cabbage (C). The lettuce (L) and radishes (R) 

 mature before the cabbages require all the land. 



same methods of tillage and fertilizing; (4) so far as pos- 

 sible, they should be of different botanical families or kinds, 

 that they may not tend to leave the soil unbalanced or 

 to breed the same kinds of insects and fungi. 



It will be seen that there is a main crop and a second- 

 ary crop. Ordinarily, the main crop occupies the middle 

 part, or middle and later part of the season. The second- 



