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Catalogue: Broadacre Field Crops DAFF QLD
Ascovirus-infected larvae are small, pale and can look as though they have been grazing in one place, leaving small 'windows' in the leaf State of Queensland.. Some predators found commonly in crops will not feed on helicoverpa at all and some may only feed on certain stages (for example, larvae of a particular size, or only eggs)... Natural enemies will rarely eradicate all eggs or larvae, but may reduce infestations to below economic threshold if predators and parasitoids are not disrupted by broad-spectrum insecticides...
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Catalogue: Broadacre Field Crops DAFF QLD
Ascovirus-infected larvae are small, pale and can look as though they have been grazing in one place, leaving small 'windows' in the leaf State of Queensland.. Some predators found commonly in crops will not feed on helicoverpa at all and some may only feed on certain stages (for example, larvae of a particular size, or only eggs)... Natural enemies will rarely eradicate all eggs or larvae, but may reduce infestations to below economic threshold if predators and parasitoids are not disrupted by broad-spectrum insecticides...
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Catalogue: Broadacre Field Crops DAFF QLD
You intend using a residual protectant to treat infested grain - pyrimiphos-methyl, fenitrothion and chlorpyrifos-methyl are ineffective against lesser grain borer, and pyrimiphos-methyl and fenitrothion are generally ineffective against sawtoothed grain beetle... you intend using dichlorvos to treat infested grain - if lesser grain borer is present you need to apply the higher dose rate... Some text regarding species above was sourced from Insects of Stored Grain - A Pocket Reference , David Rees (1994), Stored Grains Research Laboratory , CSIRO Division of Entomology, GPO Box 1700, Canberra, ACT, 2601, Australia...
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Catalogue: Broadacre Field Crops DAFF QLD
You intend using a residual protectant to treat infested grain - pyrimiphos-methyl, fenitrothion and chlorpyrifos-methyl are ineffective against lesser grain borer, and pyrimiphos-methyl and fenitrothion are generally ineffective against sawtoothed grain beetle... you intend using dichlorvos to treat infested grain - if lesser grain borer is present you need to apply the higher dose rate... Some text regarding species above was sourced from Insects of Stored Grain - A Pocket Reference , David Rees (1994), Stored Grains Research Laboratory , CSIRO Division of Entomology, GPO Box 1700, Canberra, ACT, 2601, Australia...
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Catalogue: Broadacre Field Crops DAFF QLD
You intend using a residual protectant to treat infested grain - pyrimiphos-methyl, fenitrothion and chlorpyrifos-methyl are ineffective against lesser grain borer, and pyrimiphos-methyl and fenitrothion are generally ineffective against sawtoothed grain beetle... you intend using dichlorvos to treat infested grain - if lesser grain borer is present you need to apply the higher dose rate... Some text regarding species above was sourced from Insects of Stored Grain - A Pocket Reference , David Rees (1994), Stored Grains Research Laboratory , CSIRO Division of Entomology, GPO Box 1700, Canberra, ACT, 2601, Australia...
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Catalogue: Broadacre Field Crops DAFF QLD
This gallery of images includes weevils, beetles, borers, bruchids, psocids and moths which are common pests found in stored grain... Please click on an image to view a larger version... Close-up photograph of a rice weevil preparing to lay its eggs in stored grain..
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Catalogue: Broadacre Field Crops DAFF QLD
This gallery of images includes weevils, beetles, borers, bruchids, psocids and moths which are common pests found in stored grain... Please click on an image to view a larger version... Close-up photograph of a rice weevil preparing to lay its eggs in stored grain..
Related categories:
Catalogue: Broadacre Field Crops DAFF QLD
This gallery of images includes weevils, beetles, borers, bruchids, psocids and moths which are common pests found in stored grain... Please click on an image to view a larger version... Close-up photograph of a rice weevil preparing to lay its eggs in stored grain..
Related categories: