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Pea Moth (Semasia nigricana) : Hairy white caterpillars — when full- 

 grown nearly one-half an inch long. The small adult moth lays its eggs 

 on the pods in the latter part of June or early in July. The caterpillar 

 attacks the peas and renders them unfit for table use. 



Remedies : Rotation of crops, sow early to escape the moth. 



(Fungi). 



Pea Mildew (Erysiphe martii) : Sometimes leaves and vines show a 

 line growth of mould-like threads, followed later by many small dark 

 bodies which bear the resting spores. The summer spores are borne in 

 erect chains on the fine white threads. Affected leaves are small, the 

 vines are weak, and the pods are small and shrivelled. 



Treatment : Spray with Bordeaux when the Mildew makes its appear- 

 ance, but it is not often necessary to resort to this treatment. 



Leaf-Spot (Ascochyta pisi) : The lower leaves show yellow blotches, 

 and soon fall off. Occasionally the vines and fruit are attacked. The 

 spores are small, and are borne in little sacs on the blotches. 



Potato. 



(Insects). 



Colorado Potato Beetle (Septinotarsa 10-lineata) : This very 

 familiar pest spends the winter in the ground. They leave their hiber- 

 nating quarters about the middle of May, and commence mating at once. 

 The eggs are laid on the under surface of the leaf, and hatch a few days 

 later. When full-grown, the larvae pass down to the ground, where they 

 change to orange-colored pupae, about three inches below the surface. 

 There are three broods in a season. 



Remedies : Spray with Paris green-Bordeaux (formula 4-4-40^) or 

 the arsenate-of-lead-Bordeaux, when plants are 2 to 4 inches high, and 

 repeat every ten days or two weeks, and after rains. 



Flea-Beetle (Epitrix cucumeris) : Very small black beetle, about 

 one-sixteenth of an inch in length. The hind legs are very highly devel- 

 oped, and fitted for leaping. They riddle the leaves of the potato 

 and tomato with little round holes. It is through these holes that the 

 spores of the Early Blight enters the plant. 



Remedies : Spraying with arsenical Bordeaux ; destroy hibernating 

 quarters by clean culture. 



Stalk-Weevil (Trichobaris trinotata) : Small, white, legless, grubs, 

 about one-fifth of an inch long. They bore in the stem of the potato and 

 cause the leaves to turn yellow and the stem to die prematurely. The 

 grubs change to pupae within the stems, and a little later the adults 

 emerge from their pupae and remain in the stalks until the following 

 spring*. 



