Excerpt from Results of Codling Moth Investigations, 1948, Vol. 1: Work Conducted by State Agencies, Entomological Branch, Canadian Department of Agriculture and Commonwealth of Australia Investigations at Linden and at San Jose have clearly demonstrated that standard lead arsenate is much more effective against the codling moth than is basic lead arsenate. A single early spray of the former at the rate of 3 pounds to the 100 gallons of spray has proved to be about as effective as a two-spray program of basic lead arsenate used at the rate of h pounds per 100 gallons. The addition of a basic zinc sulfate safener (delmo Z) to the standard lead arsenate spray did not reduce the effectiveness of the material. Although a single spray of standard lead arsenate gives good control, every thing possible should be done to increase its effectiveness. Investigations during the past two seasons indicate that the addition of a depositor to the Spray mixture increases the deposit and improves the control obtained. It appears that the addition of a depositor to the standard lead arsenate spray is desirable. And if one is added the manufacturer's recommendations should be carefully followed. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.