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helicoverpa management

Catalogue: Broadacre Field Crops DAFF QLD
Jamie is a research entomologist and has been based at Toowoomba for 15 years... He has been a member of the team working on projects that have increased our understanding of natural enemies and developed better options for helicoverpa management in grain crops... He is currently involved with a project investigating the contribution of natural resource management to IPM...
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Catalogue: Broadacre Field Crops DAFF QLD
Jamie is a research entomologist and has been based at Toowoomba for 15 years... He has been a member of the team working on projects that have increased our understanding of natural enemies and developed better options for helicoverpa management in grain crops... He is currently involved with a project investigating the contribution of natural resource management to IPM...
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Catalogue: Broadacre Field Crops DAFF QLD
Jamie is a research entomologist and has been based at Toowoomba for 15 years... He has been a member of the team working on projects that have increased our understanding of natural enemies and developed better options for helicoverpa management in grain crops... He is currently involved with a project investigating the contribution of natural resource management to IPM...
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Catalogue: Broadacre Field Crops DAFF QLD
The female Microplitis wasp uses her ovipositor to insert an egg into the caterpillar's body... Adult Microplitis wasp laying eggs into a Helicoverpa larva Photo: M Shepard.. Taking into account the caterpillars infected with ascovirus and Microplitis - shown as responsible for killing up to 75% of the second and third instar Helicoverpa caterpillars in these unsprayed cotton crops - a significant contribution to the control of Helicoverpa ...
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Catalogue: Broadacre Field Crops DAFF QLD
The female Microplitis wasp uses her ovipositor to insert an egg into the caterpillar's body... Adult Microplitis wasp laying eggs into a Helicoverpa larva Photo: M Shepard.. Taking into account the caterpillars infected with ascovirus and Microplitis - shown as responsible for killing up to 75% of the second and third instar Helicoverpa caterpillars in these unsprayed cotton crops - a significant contribution to the control of Helicoverpa ...
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Catalogue: Broadacre Field Crops DAFF QLD
Author/s: DAFF Published: August 2007 Bibliographic details: Includes colour illustration plates.. Research by the Department of Agriculture, Fisheries and Forestry (DAFF) has resulted in a change in recommendations for making control decisions for Helicoverpa in chickpea... The decision to spray can now be based on the relationship between the Heliocoverpa damage potential, the chickpea grain price and the cost of control, rather than a fixed number of larvae per square metre...
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Catalogue: Broadacre Field Crops DAFF QLD
Author/s: DAFF Published: August 2007 Bibliographic details: Includes colour illustration plates.. Research by the Department of Agriculture, Fisheries and Forestry (DAFF) has resulted in a change in recommendations for making control decisions for Helicoverpa in chickpea... The decision to spray can now be based on the relationship between the Heliocoverpa damage potential, the chickpea grain price and the cost of control, rather than a fixed number of larvae per square metre...
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Catalogue: Broadacre Field Crops DAFF QLD
Author/s: DAFF Published: August 2007 Bibliographic details: Includes colour illustration plates.. Research by the Department of Agriculture, Fisheries and Forestry (DAFF) has resulted in a change in recommendations for making control decisions for Helicoverpa in chickpea... The decision to spray can now be based on the relationship between the Heliocoverpa damage potential, the chickpea grain price and the cost of control, rather than a fixed number of larvae per square metre...
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Catalogue: GRDC Final Reports
The principal aim of the project was to contribute to the continuing adoption of integrated pest management (IPM) by grain growers in the GRDC's northern region, specifically, the Darling Downs and Central Queensland... The finding suggests that the application of this technique for predator/prey field studies has limited field application... The outcome was achieved through facilitated learning by growers and their advisers via grower group meetings, field day demonstrations, technical literature and presentations by entomologists at technical forums e.g. Grower and Adviser Updates...
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Catalogue: Broadacre Field Crops DAFF QLD
The name Helicoverpa refers to two species of moth, the larvae of which attack field crops in the northern grains region of Australia... Helicoverpa armigera is generally regarded as the more serious pest because of its greater capacity to develop resistance to insecticides, its broader host range, and the fact that it persists in cropping areas from year to year, whereas H. punctigera numbers fluctuate from year to year based on conditions in its inland breeding areas... Helicoverpa armigera attacks all crops but is less common in wheat and barley...
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