CHAPTER VII 



INSECTS AND DISEASES WITH REMEDIES. 



Enemies of bean plant. — The bean grower may 

 expect his full quota of insect and fungous pests. 

 The bean weevil and the anthracnose have" driven 

 more than one man out of the business and caused 

 scores of others to regard the industry with appre- 

 hension. However, the determined and careful 

 grower who uses all the agencies in his power to 

 overcome the pests seldom, if ever, loses his crop 

 through injuries by insects or fungi. It will be noted 

 that as a rule those whose crops suffer most from 

 these causes are the ones who use the least care in 

 spraying at the proper time and are the least likely 

 to take precautionary measures, of which there are 

 many in the production of the best and surest crop. 



The enemies of the bean plant are fungi, insects 

 or bacteria. Fungi are minute plants often parasitic. 

 The agents used to combat them are known as 

 fungicides. The term insects is self explanatory 

 and agents used to combat them are called insecti- 

 cides. Insecticides are of two classes; those which 

 carry a poison for leaf eating insects and those which 

 kill juice sucking insects by contact. Bordeaux 

 mixture" is a good example of a fungicide and Paris 

 green of an insecticide. 



FUNGOUS PESTS 



Anthracnose (CoUetotrichum lagenarium), usually 

 the most destructive disease of beans, is a fungus 



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