PEAS AND BEANS 103 



tageously distributed over infested plants while the dew is 

 upon them, or after rain. Finely-powdered guano may also 

 be used in this way. An observer has found that, by cover- 

 ing the rows with fine earth, his peas have been kept free 

 from this pest. 



" Spraying the rows of peas with arsenical washes has 

 been found beneficial. Applications of weak mixtures of 

 paraffin and water, with a little soft soap, would make 

 infested plants distasteful to these insects. 



" Liquid solutions and finely powdered materials can be 

 easily applied and well distributed with knapsack-machines. 



" When peas and beans are attacked, it is desirable to 

 press the soil tightly and firmly round the plants in order to 

 prevent the beetles from coming up from the earth." 

 (Board of Agriculture Leaflet No. 19.) 



