INSECT AND FUNGOUS PESTS 39 



out in the spring. All unripe pods should be burned, 

 as they may contain worms ; and peas should not be 

 grown upon or near the same piece of ground the 

 following season if the moth is known to be in the 

 soil. Sowing early varieties as early as possible in 

 the season has been found useful, as pods get ahead 

 of the worms. Late sowing is recommended for the 

 opposite reason that the peas will mature after the 

 worm has disappeared. 



Pea Louse (Nectar Ophora Destructor). This 

 pest is frequently called the pea aphis. It does 

 great damage on the growing vines all through Nova 

 Scotia, Canada, and the states. It is particularly 

 destructive in some canning sections, where the an- 



PEA MOTH AND CATERPILLAR; INFECTED PEA. 

 (From U. S. Dept. of Agri.) 



nual loss runs into the millions of dollars. These 

 lice attack the young pea vines and multiply with 

 great rapidity, often killing the vines outright. They 

 have been found upon sweet peas. On a small scale, 

 spraying with a 25 per cent solution of kerosene 

 and water has proved effective. Whale oil soap and 

 tobacco dust are effective, but in a large way these 

 remedies are too expensive. Large numbers are de- 



