Author: Gregory Thomas Hannig
Publisher:
ISBN:
Category : Growth regulators
Languages : en
Pages : 182

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Book Description

Author:
Publisher:
ISBN:
Category : Entomology
Languages : en
Pages : 670

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Book Description
Monthly, with annual author and subject indexes. Abstracts from about 2750 primary journals dealing with the subject of insects. Arranged in classified order. Entries include titles given or translated into English, authors, addresses offirst authors, and abstracts; all insects cited in the abstracts are identified by scientific family names. Each monthly issue has Index to classes and orders, Author index.

Author: Hugo E. Baan (van de)
Publisher:
ISBN:
Category : Miridae
Languages : en
Pages : 258

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Book Description
Factors influencing pesticide susceptibility and resistance were studied in Psylla pyricola Foerster, and its mirid predator, Deraeocoris brevis Knight in the Rogue River Valley, Oregon. Factors studied were at the biochemical, life history, and population ecology levels. Studies on detoxification enzymes showed that glutathione S-transferase and cytochrome P-450 monooxygenase activities were ca. 1.6-fold higher in susceptible R. brevis than in susceptible pear psylla, however, esterase activity was ca. 5-fold lower. Esterase activity was ca. 18-fold higher in resistant pear psylla than in susceptible D. brevis, however, glutathione S-transferase and cytochrome P-450 monooxygenase activities were similar. Esterases seem to be a major factor conferring insecticide resistance in P. Pvricola. Although the detoxification capacities of P. pyricola and D. brevis were quite similar, pear psylla has developed resistance to many insecticides in the Rogue River Valley, whereas D. brevis has remained susceptible. Biochemical factors may be important in determining the potential of resistance development, however, they are less important in determining the rate at which resistance develops. Computer simulation studies showed that life history and ecological factors are probably of greater importance in determining the rate at which resistance develops in P. pvricola and D. brevis. High fecundity and low immigration of susceptible individuals into selected populations appear to be major factors contributing to rapid resistance development in pear psylla compared with D. brevis. Implications of this study for pesticide resistance management of pear psylla are discussed.

Author:
Publisher:
ISBN:
Category : Acaricides
Languages : en
Pages : 418

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Author:
Publisher:
ISBN:
Category : Invertebrates
Languages : en
Pages : 612

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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 776

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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1742

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Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 768

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Author: Elizabeth Hull Beers
Publisher:
ISBN: 9780963065933
Category : Fruit
Languages : en
Pages : 0

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Book Description

Author: Michelle Fountain
Publisher: Burleigh Dodds Series in Agric
ISBN: 9781786762566
Category : Science
Languages : en
Pages : 480

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Book Description
In the light of increasing restrictions on pesticides, this collection reviews advances in understanding key diseases and insect pests of tree fruit. It shows how this understanding can be used to improve integrated disease and pest management techniques.