474 VEGETABLE GARDENING 



688. Examples. It is common for truck crops to be 

 included in a three or four-year rotation with general 

 farm crops. Sweet corn, cucumbers, squashes, early and 

 late cabbage or cauliflower often follow clover in either 

 a three or four-year rotation which, in the North, fre- 

 quently includes wheat. In trucking districts, where 

 the general farm crops are not grown to any consider- 

 able extent, the practice varies considerably. When 

 climatic conditions permit, a winter cover crop should be 

 started on all cultivated areas (unless a cash crop, as 

 spinach or cabbage, is to be planted in the fall and mar- 

 keted in the spring), and this will be valuable from the 

 standpoint of rotation. 



