1 7 8 



GARDEN FARMING 



kerosene emulsion as a spray upon the plant is practically the only 

 effective way of controlling this troublesome insect. 



Diseases of the farm crop. The only disease which is important 

 enough to be mentioned in connection with the cabbage industry 

 is the clubroot, the ravages of which are not confined exclusively 

 to the cabbage plant but are felt by all members of the cabbage 

 family, including turnips, cabbage, cauliflower, kale, Brussels 

 sprouts, etc. This is a disease which is capable of propagating 

 itself in the soil from year to year. The only way to eliminate it 

 from the infested area is to stop growing cabbage and all related 



plants for a number of 

 years. By excluding 

 from infested soils all 

 crops belonging to the 

 cabbage family and 

 growing on them cere- 

 als or grasses, in the 

 course of five or six 

 years they will become 

 free from the clubroot 

 scourge and it will 

 again be safe to use 

 them for the cultiva- 

 tion of cabbage. This 



disease is known to botanists as Plasmodiophora Brassicae. Young 

 plants from a seed bed severely affected by clubroot are shown in 

 figure 63. 



Harvesting and marketing the farm crop. The common, and 

 usually the most advantageous, method of handling the farm crop 

 is to cut the heads at the approach of cold weather, and ship them 

 directly to the market. When cabbage is grown on a large scale, 

 say from 5 to 20 acres, it is almost absolutely necessary to handle 

 it in this way, unless one has extensive storage facilities at his com- 

 mand. The market gardener, however, who grows only a limited 

 quantity of cabbage for local use can store his crop through the win- 

 ter so as to make it available for his local market as it is needed. 

 At harvest time, whether the cabbage is to be shipped, carried 

 to the kraut factory, or stored, a wagon provided with a deep body 



FIG. 63. Cabbage seedlings affected with clubroot 



