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Adapting pest management strategies for novel growing methods with a perennial crops (dwarf hops). - HH1935SHO

Description
The main objective of this project is to develop a strategy for exploiting spacial and temporal dispersal of phytoseiid mites for the control of a tetrachychid mite. The investigation will be made on dwarf hops, on which the two-spotted spider mite has become a serious pest since the adoption of novel low-trellis growing methods of the crop. As the pattern of husbandry for dwarf hops is intermediate between that for horticultureal field crops replanted annually and perennial fruit crops, results will be relevant and exploitable for these types of crop. The natural dispersal and prey detection behaviours of P. persimilis will be quantified and exploited. A spacio-temporal model of predator movement and dispersal will be developed. As older broad-spectrum insecticides and acaricides either fail or are phase out, severly damaginfg new pest may appear, as has happened with Lepidoptera on dwarf hops since 1996. The damage caused by key species of Lepidoptera will be quantified and strategies for their management investigated; the new strategies must be compatible with the intergrated management of other pests. The potential importance of a resurgence in the numbers of root-feeding weevils will be quantified and sustainable control strategies investigated. The results will be capable of adaptation and exploitation by the UK growers of dwarf hops, and crops with similar pest problems, to control seriously damaging crop pests in a sustainable cost-effective manner, thus meeting MAFF policy aims, while allowing them to maintain and improve the quality and accepability of their produce as currently available broad-spectrum pesticides are phased out.
Objective
The objective of the project is to develop a strategy for exploiting spatial and temporal dispersal of phytoseiid mites for the control of tetranychid mites. The investigation will be made on dwarf hops, on which the two-spotted spider mite has become a serious pest since the adoption of novel low-trellis growing methods for the crop.
Project Documents
• Final Report : final report   (677k)
Time-Scale and Cost
From: 1999

To: 2002

Cost: £369,067
Contractor / Funded Organisations
Horticulture Research International
Keywords
Breeding              
Crop Pests              
Farming              
Hops              
Horticulture              
Fields of Study
Horticulture
Horticulture