70 BEAN CULTURE 



caterpillar on garden crops. Paris green is recom- 

 mended in the proportion of i pound to 50 gallons of 

 water to which may be added i pound quick lime. This 

 insecticide does not destroy the foliage of the plant. 

 Other insects. — Several species of bean lice, bugs, 

 leaf hoppers, etc., injure the vitality of bean plants by 

 sucking their juices. The most abundant forms of the 

 plant lice have been Aphis gossypii, and A. rumicis. 

 The leaf hopper most injurious to beans is Em- 

 poasca fahae. In the plant-bug kingdom the enemies 

 most injurious are Halticus uhleri. The standard 

 remedy for this class of insects is kerosene emulsion 

 and since they feed largely on the underside of the 

 leaves underspraying is essential. 



