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Biological control of leatherjackets using insect pathogens OF0116T

Chandler, David (1998) Biological control of leatherjackets using insect pathogens OF0116T. Horticulture Research International .

[thumbnail of Biological_control_of_leatherjackets_using_insect_pathogens_OF0116T.pdf] PDF - English


Leatherjackets (Tipula spp.; larvae of crane flies) are significant pests affecting the organic farming sector. Effective non-chemical methods of protecting organic crops from leatherjackets have not yet been developed, although insect pathogens are a promising method for biological control of these pests. This study will aim to identify and evaluate fungi, nematodes and the bacterium Bacillus thuringiensis for their effectiveness as control agents. The pathogens will be sourced from the HRI resource collection. Selected isolates of pathogens with known activity to dipteran pests will be screened in bioassays against laboratory-reared leatherjackets. Virulent isolates will be examined in detail both in laboratory experiments and glasshouse trials on a cereal and a field vegetable. Feeding behaviour of the pests will be studied in order to develop a rational strategy for application of the microbial control agents, and the effect of temperature on the virulence of control microbes (including cold-tolerant nematodes) will be examined. The incidence of insect pathogenic nematodes and fungi in a population of leatherjackets from an organic farm will be recorded. Replicated field experiments with microbial control agents will be conducted at HDRA under appropriate organic crop production systems using relevant methods developed in other, related MAFF-funded projects. Findings of the study will be published in refereed journals and grower-related information made available at HRI and HDRA and open days, and through the trade press.

EPrint Type:Report
Keywords:leatherjackets, cereals, vegetables, arable, crop protection, biological pest control, knowledge transfer, glasshouse trials, laboratory trials
Subjects: Crop husbandry > Crop health, quality, protection
Crop husbandry > Production systems > Cereals, pulses and oilseeds
Crop husbandry > Production systems > Vegetables
Research affiliation: UK > Garden Organic (HDRA)
UK > Univ. Warwick, HRI
Research funders: UK > Department for Environment, Food and Rural Affairs (DEFRA)
Project ID:OF0116T
Start Date:1 July 1995
End Date:30 June 1998
Deposited By: Defra, R&D Organic Programme
ID Code:7861
Deposited On:14 Dec 2006
Last Modified:12 Apr 2010 07:32
Document Language:English
Refereed:Not peer-reviewed

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