The Potato Plant Louse: Nectorophora Solanifolii Ashmead (Classic Reprint)

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Excerpt from The Potato Plant Louse: Nectorophora Solanifolii Ashmead

In view of the fact, however, that the species upon the potato will feed and multiply readily upon. Pea vines it might be advisable, if the trouble continues to be seriously prevalent, to Omit the peas from the rotation scheme. For potatoes upon numerous 20 to 60 - acre fields one year and peas over the same area the next would seem to Offer an unbroken opportunity for the growth of the summer genera tions of this destructive plant louse. This suggestion does not touch the question of the winter host, because it would be upon these vines as upon the potato that the summer genera tions would occur, and even if eggs were deposited upon the pea, as it is harvested with the oat crop it could not serve as a dangerous winter host.

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