Excerpt from The Potato Plant Louse: Nectorophora Solanifolii AshmeadIn view of the fact, however, that the species upon the potato will feed and multiply readily upon. Pea vines (see insectary notes) 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.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.