Download or read book Pink Bollworm Control in the Western United States (Classic Reprint) written by Harry Morgan Graham and published by Forgotten Books. This book was released on 2018-01-12 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Pink Bollworm Control in the Western United States Avoidance of early planting can reduce the numbers of moths that survive to infest cotton in the spring. If planting is too late, however, it can result in yield losses, increased damage by late season infestations of insects such as the tobacco budworm, and increased proportions of the pink bollworm and other pests entering the overwintering stage. The most practical approach to reducing pink bollworm populations is to plant when optimal conditions for seed germination occur, produce a heavy boll set before the extreme summer heat reduces fruiting, and terminate fruiting earlier than it is now normally accomplished. At present, early termination of fruiting is limited to cessation of irrigation and to early maturing varieties. An irrigation termination of August 1 at Yuma, Ariz., reduced overwintering pink bollworm populations with no reduction in yield compared with later irrigation termination dates. This date would have to be altered for other locations, depending on soil type and other factors. Not only does the production of an early cotton crop decrease overwintering pink bollworm populations, it also may result in increased quality of the cotton by avoiding insect damage, boll rot, and storm damage that can occur in later cotton. Plant growth regulators have been used effectively to terminate cotton fruiting. These may have some advantages over irrigation termination, but none is registered for this use on cotton as yet. 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.