100 VEGETABLE GROWING PROJECTS 



results. Growers often use a ton of commercial fertilizer to the 

 acre. It should contain a liberal proportion of phosphoric acid, 

 also nitrogen, if this element can be bought at a reasonable price. 

 Potash should probably be used on most soils, but its application 

 does not seem to be so important as the other materials mentioned. 



The most dreaded and destructive disease of cabbage is club- 

 root, caused by a slime mold. Regular and heavy liming seems 

 to be the most effective preventive measure that can be taken 

 against losses from this enemy. At least two tons of caustic lime to 

 the acre should be employed, and the crop should not be grown 

 on the same land at closer intervals than four or five years. 

 Apply three or four tons in case of clubroot. 



It is nearly always an advantage to plow the land in the fall for 

 the early crop and in early spring for the late crop. 



1. See W : 63 and references. 



2. What are the plant food requirements of cabbage ? 



3. What crops might precede cabbage ? W-VG : 268. 



4. Should stable manure be applied ? If so, what kind, how much, 



and when ? W-VG : 269. C : 165. 



6. Should commercial fertilizers be applied? If so, what kind 

 and how much? W-VG : 269. C : 165. R: 36-40. 



6. Determine the best treatment for the flat that you will use for 



cabbage. 



7. What are the values of lime for growing cabbage ? The general 



functions of lime in the soil ? 



8. When should you plow for early cabbage ? For late cabbage ? 



