[PDF] Pink Bollworm Control In The Western United States eBook

Author : Harry Morgan Graham
Publisher : Forgotten Books
Page : 96 pages
File Size : 45,4 MB
Release : 2018-01-12
Category : Business & Economics
ISBN : 9780428458485

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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.

Author : T. J. Henneberry
Publisher : Forgotten Books
Page : 54 pages
File Size : 13,77 MB
Release : 2018-05-14
Category : Business & Economics
ISBN : 9780366729753

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Excerpt from Pink Bollworm Management in Cotton in the Southwestern United States The first pink bollworm infestations in eastern Arizona were reported in 1926. At intervals thereafter, they occurred in other parts of the State and were suppressed through cooperative Federal, State, and industry programs, but infestations spread rapidly after termination of the cooperative efforts in 1963 and were found in the Imperial Valley of California in 1965. Spread was rapid throughout southern California and severe losses occurred by 1967. Infestations were detected in the high desert areas of Los Angeles and San Bernadino Counties in that year, and four moths and six larvae were found in the San Joaquin Valley near Bakersfield. Varying numbers of native moths have been trapped each year except for 1968, and a few larvae were found in the San Joaquin Valley in 1970, 1977, 1980, and 1983. However, by 1985, the San Joaquin Valley remains the only cotton growing area in the Western United States without a firmly established pink bollworm population. 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.

Author :
Publisher : UCANR Publications
Page : 168 pages
File Size : 23,27 MB
Release : 1996
Category : Technology & Engineering
ISBN : 9781879906303

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Pest management information covers nearly 100 pest problems, including information on pesticide resistance, cotton aphid, silverleaf whitefly, pink bollworm, boll weevil, Fusarium wilt, Verticillium wilt, seedling diseases, velvetleaf, and disease-resistant cotton varieties. 180 color plates.