The Isolation, Implementation and Evaluation of Entomophaga Praxibuli as a Potential Biological Control Agent of North American Grasshoppers PDF Download
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Author: Mark E. Ramos
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
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Book Description
Author: Mark E. Ramos
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
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Book Description
Author:
Publisher:
ISBN:
Category : Biological pest control agents
Languages : en
Pages : 410
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Book Description
Author: Mark Stanislaw Goettel
Publisher:
ISBN:
Category : Agricultural pests
Languages : en
Pages : 408
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Author:
Publisher:
ISBN:
Category : Grasshoppers
Languages : en
Pages : 60
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Book Description
Author: Wahid H.S. Dakhel
Publisher:
ISBN: 9780355133998
Category : Entomology
Languages : en
Pages : 124
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Book Description
Grasshoppers (Orthoptera: Acrididae) cause about 25 percent of the annual losses in available forages in the western United States (U.S). Biological control, or the use of microbial pathogens to control grasshopper pest infestations, is one of the leading alternatives to traditional chemical pesticides for crop and rangeland protection from these pests. Fungal pathogens are among the most commonly used agents in grasshopper biocontrol. Metarhizium acridum and Paranosema locustae are both fungal entomopathogens of grasshoppers. Another Metarhizium isolate, Metarhizium brunneum F52, has been registered in U.S., but for control of other insects. To assess the susceptibility of third instar nymphs of migratory grasshopper Melanoplus sanguinipes, different treatments with two pathogens, M. brunneum F52 and P. locustae were applied on wheat bran bait alone, or in combination, in the laboratory and greenhouse conditions with three specific objectives: 1) to evaluate the effect of P. locustae combined with M. brunneum F52 versus each pathogen alone for control M. sanguinipes nymphs in the laboratory; 2) to evaluate the effect of P. locustae combined with M. brunneum F52 versus each pathogen alone for control M. sanguinipes nymphs in the greenhouse conditions; 3) to evaluate the virulence (speed of action) of these two pathogens, alone and in combinations. The results indicated that treatment with combination of pathogens at high and low concentrations generated respectively 76.7% and 75% mortality in grasshoppers after two weeks of exposure under laboratory conditions. In contrast, lower mortality was observed at high and low concentrations of M. brunneum F52 alone - 68% and 15%, respectively. There was no mortality in grasshoppers treated with P. locustae alone two weeks post-treatment. In the greenhouse, where the grasshoppers were exposed to sunlight and could thermoregulate to inhibit the fungal infection, combination of the two pathogens at high and low concentrations resulted in grasshopper mortality of 50% and 60%, respectively. In comparison, grasshoppers treated with M. brunneum F52 alone at high and low concentrations resulted in 45% and 20% respective mortality two weeks post-treatment. P. locustae alone caused very low grasshopper mortality only 16 days post-treatment. In both experiments, based on the speed of lethal action, the combination of M. brunneum F52 with P. locustae was more virulent to grasshoppers compared to the treatments of each fungus alone. In addition, the lowest concentration of this pathogen combination treatment produced a synergistic effect on nymphal mortality under greenhouse conditions. The tested pathogens appear promising for developing a biopesticide formulation for rangeland pest grasshopper control.
Author: James Floyd Fowler
Publisher:
ISBN:
Category : Grasshoppers
Languages : en
Pages : 56
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Author:
Publisher:
ISBN:
Category : Grasshoppers
Languages : en
Pages : 12
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Author: J. Gordon Watts
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 404
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Book Description
Author: James R. Fuxa
Publisher: John Wiley & Sons
ISBN: 9780471878124
Category : Science
Languages : en
Pages : 576
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Book Description
The first book devoted to the epidemiology or epizootiology of insect pathogens. Covers all aspects of the subject, including general principles, concepts and definitions, strategies and methods for research, modeling, factors that influence epizootics, area-wide patterns of disease, all the groups of disease, and practical aspects, such as enhancing disease in pest species, controlling it in beneficial insects or in insect rearing. Provides material not readily found elsewhere, such as modeling entomopathogen epizootics, general reviews of the epizootiology of various pathogen groups, consideration of microbial control from an epizootiological point of view, and a general review of epizootiology in prevention of insect disease. Offers the most comprehensive bibliography of this subject anywhere. Well illustrated.
Author: Omkar Ph.D.
Publisher: Academic Press
ISBN: 0128032669
Category : Science
Languages : en
Pages : 764
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Book Description
Ecofriendly Pest Management for Food Security explores the broad range of opportunity and challenges afforded by Integrated Pest Management systems. The book focuses on the insect resistance that has developed as a result of pest control chemicals, and how new methods of environmentally complementary pest control can be used to suppress harmful organisms while protecting the soil, plants, and air around them. As the world's population continues its rapid increase, this book addresses the production of cereals, vegetables, fruits, and other foods and their subsequent demand increase. Traditional means of food crop production face proven limitations and increasing research is turning to alternative means of crop growth and protection. - Addresses environmentally focused pest control with specific attention to its role in food security and sustainability. - Includes a range of pest management methods, from natural enemies to biomolecules. - Written by experts with extensive real-world experience.
