Diseases oe Beans 
29 
Fig - . V.—Bean pods affected with “Streak” 
MEASURES OF CONTROL 
The measures of control which can be recommended for any 
one of the diseases described, apply equally well to all. Accord- 
ingly, this phase of the question has not been taken up in connec¬ 
tion with the individual diseases, but has been reserved for con¬ 
sideration as a whole. 
1. Plant beans on the same land not oftener than once in three 
or four years, particularly if disease has been prevalent. Soils 
which once become thoroly infected as a result of continuous crop¬ 
ping are seldom safe to use for the same or closely related crops 
tor years to come. 
2. Wherever practical, destroy all diseased vines and trash by 
burning. 
