The Wheat Stem Sawfly and Its Control PDF Download
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Author: United States. Bureau of Entomology and Plant Quarantine
Publisher:
ISBN:
Category : Black grain-stem sawfly
Languages : en
Pages : 10
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Book Description
Author: United States. Bureau of Entomology and Plant Quarantine
Publisher:
ISBN:
Category : Black grain-stem sawfly
Languages : en
Pages : 10
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Book Description
Author: Norman Criddle
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
Author: Canada. Department of Agriculture
Publisher: Department of Agriculture
ISBN:
Category : Cephus cinctus
Languages : en
Pages : 8
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Book Description
Author: Lew E. Wallace
Publisher:
ISBN:
Category : Cephus cinctus
Languages : en
Pages : 54
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Book Description
Author: Philip Luginbill
Publisher:
ISBN:
Category : Sawflies
Languages : en
Pages : 12
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Book Description
Author: Canada. Dept. of Agriculture. Agricultural Supplies Board
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Janet Jean Knodel
Publisher:
ISBN:
Category : Cephus cinctus
Languages : en
Pages : 7
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Book Description
Author: Christian W. Farstad
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
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Book Description
Author: Christopher T. McCullough
Publisher:
ISBN:
Category : Cephus cinctus
Languages : en
Pages : 110
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Book Description
The wheat stem sawfly, Cephus cinctus Norton (Hymenoptera: Cephidae), is a serious insect pest of wheat, Triticum aestivum L., in the northern central Great Plains. The sawfly has been a pest of wheat in Montana, North Dakota, and Canada since the early 20th century. It was first detected in Nebraska winter wheat in the early 1990s, in Scotts Bluff County. The sawfly has since spread throughout the Nebraska Panhandle region and become a pest of serious concern. To gain a better understanding of the sawfly in Nebraska, investigations on the emergence, dispersal, and sampling of the sawfly were conducted. Observations on the emergence and dispersal of the adult sawfly were made in 2014 and 2015 in three winter wheat fields in the Nebraska Panhandle by using emergence cages, sticky traps, and sweep net sampling. Adult sawflies begin emerging in mid-May and are no longer found by the end of June. Adult sawfly densities decreased the farther into the wheat that was sampled. This edge effect was observed for both sexes of the sawfly, but it is more apparent with male sawflies. The adult sawfly has an aggregated distribution when described by Taylor's Power Law. By using Taylor's Power Law, the number of sweep net samples required to maintain a desired precision level was determined. When sampling at early wheat heading, five, 20-sweep sweep net samples are needed to maintain a 20% precision level. These sampling data were correlated to larval infestation rates and used to develop a sampling plan that predicts larval infestation rates based upon stem density and the number of adults sampled. Sampling adults gives wheat growers ample time to take management action, such as swathing, during the current growing season. It also allows time for growers to change their wheat variety to a more resistant, solid stem wheat variety, for the next growing season.
Author: Philip Luginbill Jr.
Publisher: Forgotten Books
ISBN: 9780366776733
Category : Business & Economics
Languages : en
Pages : 20
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Book Description
Excerpt from Suppression of Wheat Stem Sawfly With Resistant Wheat He also projected the trend Of such a population when subjected to control with insecticides and other measures. 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.
