Seasonal Occurrence, Analysis of Sweep Counts, Survival and Damage Caused by the Alfalfa Plant Bug, Adelphocoris Lineolatus (Goeze) (Hemiptera:miridae) and Tarnished Plant Bug, Lygus Lineolaris (Palisot de Beauvois) (Hemiptera:miridae) to Alfalfa Grown for Forage in Wisconsin PDF Download
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Author: Bryan Merle Jensen
Publisher:
ISBN:
Category :
Languages : en
Pages : 300
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Book Description
Author: Bryan Merle Jensen
Publisher:
ISBN:
Category :
Languages : en
Pages : 300
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Book Description
Author: Md. Jashim Uddin
Publisher:
ISBN:
Category :
Languages : en
Pages : 778
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Book Description
The study was conducted from 1999 to 2001 to determine the most suitable method to be used for sampling insect pests on alfalfa, to determine the seasonal occurrence of common insect pests and natural enemies, to assess the roles of common natural enemies on insect pests, and to find out ways to increase the benefits from insect natural enemies in relation to the production practices of alfalfa in Manitoba. Among different sampling methods, sweep-net sampling was found to be the most consistent and reliable method of sampling most insect taxa, although beat tray sampling provided better estimates for Lygus spp. nymphs. It was found in the present study that Lygus spp. Hahn, Adelphocoris lineolatus (Goeze) and Acyrthosiphon pisum (Harris) were the most prevalent insect pests. Carabids, chrysopids, coccinellids, Nabis spp., Orius spp., spiders and opilionids were the most commonly occurring predaceous taxa. Circumstantial evidence from the field study and evidence from the laboratory study indicate that coccinellids play important roles in population growth of the above pests on alfalfa. Field and laborarory studies also provided evidence that carabids, coccinellids, chrysopids and nabids alone or together as a guild can suppress these pest populations on alfalfa. Parasitoids appeared to be important, as they killed a considerable percentage of Lygus spp. and A. pisum, but not of A. lineolatus. Aphidius ervi Haliday was the most prevalent aphid parasitoid. No control measures were required in hay fields, as swathing hay suppressed pest populations below damaging levels, partly through causing Lygus spp., and sometimes A. lineolatus, to move into adjacent seed fields. Conversely, insect pests were more numerous in seed fields, although these fields usually received chemical insecticides as pest control measures. Whether populations of natural enemies can be enhanced in seed alfalfa fields was examined, and it was found that nepetalactone, which is an aphid sex pheromone component, can be used to enhance natural enemy populations, and the benefits thereof, in seed fields. Successful rearing of Chrysoperla carnea (Stephens) and Chrysopa oculata Say larvae by using Megachile rotundata (Fabricius) (leafcutting bee) prepupae as the chrysopid larval diet expanded the use of leafcutting bees and provided a basis for inexpensive culture of chrysopids. The potential of insect pests and their natural enemies for management in connection with the current alfalfa production practices are discussed.
Author: Arnold Mallis
Publisher:
ISBN:
Category : Biography & Autobiography
Languages : en
Pages : 606
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Book Description
Some 211 lengthy biographies about outstanding, deceased, North American entomologists. Emphasis on the lives of the men, rather than their accomplishments. Entries are discussed under 14 general categories. References. Photographs. Name index.
Author: Robert Lorenzo Webster
Publisher:
ISBN:
Category : Insects
Languages : en
Pages : 994
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Book Description
Author: Omkar
Publisher: Springer
ISBN: 9811086877
Category : Science
Languages : en
Pages : 1075
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Book Description
This book comprehensively compiles information on some of the major pests that afflict agricultural, horticultural and medicinal crops in particular as well as many polyphagous pests. Not only does this book deal with the pests of common globally produced crops it also addresses those of rarely dealt with crops such as seed spices, medicinal and aromatic plants. While the perspective of insect pests is largely Indian and South East Asian in context, the book does deal with globally problematic pests, particularly polyphagous ones. Not only will the readers be acquainted with the pests, their damaging potential and their life cycle but also with the latest methods of managements including ecofriendly measures being employed to keep pest populations at manageable levels. The 27 chapters in the book, are grouped into four sections primarily based on crop types, viz. pest of agricultural, horticultural and medicinal crops, and polyphagous pests, making the book easy to navigate. Each of the chapters is comprehensive and well illustrated and written by academicians who have dedicated their entire lives to the study of a particular crop-pest complex. The final chapter of this book provides an overview on the principles and processes of pest management.
Author: Roderick G. McKinlay
Publisher: Springer
ISBN: 1349099244
Category : Technology & Engineering
Languages : en
Pages : 421
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Book Description
This authoritative multi-author reference covers the pests of all major vegetable crops grown outdoors in temperate latitudes. Details are given on the geographical distribution, description, life-cycle, damage and control of each pest. Emphasis is given to non-chemical methods of pest management.
Author: A. D. Hopkins
Publisher:
ISBN:
Category : Scolytid beetles
Languages : en
Pages : 206
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Book Description
Author: J. T. Clark
Publisher:
ISBN:
Category : Entomology
Languages : en
Pages : 88
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Book Description
Author: Lanna Cheng
Publisher: North-Holland
ISBN:
Category : Nature
Languages : en
Pages : 606
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Book Description
This is the first exhaustive review of literature on marine insects, which are defined in this volume as those that spend at least part of their life in association with the marine environment. Not only are true insects, such as the Collembola and insect parasites of marine birds and mammals, considered, but also other kinds of intertidal air-breathing arthropods, notably spiders, scorpions, mites, centipedes and millipedes, which live and feed with, or even on, the insects of marine habitats. The chapters, written by leading authorities, are divided into two sections, the first treating primarily ecological aspects, the second dealing with major groups of insects in marine environments.
Author: Gene Kritsky
Publisher:
ISBN: 9781462044498
Category : Science
Languages : en
Pages : 226
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Book Description
A Survey of Entomology Second Edition is a concise, highly readable introduction to the study of insects, including their structure, biology, behavior, evolution, and a review of the insect orders with special emphasis on the major insect families. This new edition features information about fossil insects and on using applied insect ecology to control insect pests. A detailed guide describes techniques of collection and preservation, and an easy-to-use key enables readers to identify the orders of insects without difficulty. Information is presented in clear, straightforward language, and a full glossary is provided to clarify entomological terms. This is an ideal book for students of all backgrounds who are taking an introductory entomology course, or for anyone wanting to learn more about the most successful creatures on Earth.
