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Catalogue: Broadacre Field Crops DAFF QLD
The four types of whitefly found in Australia are: the greenhouse whitefly , Trialeurodes vaporariorum the silverleaf whitefly (SLW), or B biotype, Bemisia tabaci species complex the Australian native (AN), biotype Bemisia tabaci species complex , also known as the cotton whitefly... The greenhouse whitefly has overlapping wings that form a heart shape... B biotype poses a greater pest threat than other whitefly because of their greater host range, quicker reproductive rate, and ability to rapidly develop resistance to insecticides...
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Catalogue: Broadacre Field Crops DAFF QLD
Adult and nymph black field crickets feed on the leaves and stems of seedlings and may reduce a stand to the extent that replanting is necessary... In sunflower, the cricket feeds on the seedlings, on the back of the flower heads and on the maturing seeds on the face of the flower... Most damage is caused by crickets already in the area at planting or by adults flying into crops...
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Catalogue: Broadacre Field Crops DAFF QLD
Adult and nymph black field crickets feed on the leaves and stems of seedlings and may reduce a stand to the extent that replanting is necessary... In sunflower, the cricket feeds on the seedlings, on the back of the flower heads and on the maturing seeds on the face of the flower... Most damage is caused by crickets already in the area at planting or by adults flying into crops...
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Catalogue: Broadacre Field Crops DAFF QLD
Adult and nymph black field crickets feed on the leaves and stems of seedlings and may reduce a stand to the extent that replanting is necessary... In sunflower, the cricket feeds on the seedlings, on the back of the flower heads and on the maturing seeds on the face of the flower... Most damage is caused by crickets already in the area at planting or by adults flying into crops...
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Catalogue: Broadacre Field Crops DAFF QLD
Winter cereals include wheat, barley, oats, canary and triticale... Insects are not normally a major problem in winter cereals but there will be times when they build up to an extent that control may be warranted... Small larvae take 8-10 days to reach a size capable of head lopping, so if small larvae are found in crops nearing full maturity/harvest no spray may be needed, whereas small larvae in late crops which are still green and at early seed fill may reach a damaging size in time to significantly reduce crop yield...
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Catalogue: Broadacre Field Crops DAFF QLD
Winter cereals include wheat, barley, oats, canary and triticale... Insects are not normally a major problem in winter cereals but there will be times when they build up to an extent that control may be warranted... Small larvae take 8-10 days to reach a size capable of head lopping, so if small larvae are found in crops nearing full maturity/harvest no spray may be needed, whereas small larvae in late crops which are still green and at early seed fill may reach a damaging size in time to significantly reduce crop yield...
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Catalogue: Broadacre Field Crops DAFF QLD
Winter cereals include wheat, barley, oats, canary and triticale... Insects are not normally a major problem in winter cereals but there will be times when they build up to an extent that control may be warranted... Small larvae take 8-10 days to reach a size capable of head lopping, so if small larvae are found in crops nearing full maturity/harvest no spray may be needed, whereas small larvae in late crops which are still green and at early seed fill may reach a damaging size in time to significantly reduce crop yield...
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Catalogue: Broadacre Field Crops DAFF QLD
Larvae of the native budworm, cabbage centre moth and cabbage white butterfly, all of which have legs and may occur on canola... Larvae chew on leaves resulting in 'windows' or holes and severe defoliation can mean reduced yield and quality... Chemical control: One spray may be cost-effective on young, moisture-stressed crops, or during the bolting stage if densities exceed 100 larvae per 10 sweeps...
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Catalogue: Broadacre Field Crops DAFF QLD
Larvae of the native budworm, cabbage centre moth and cabbage white butterfly, all of which have legs and may occur on canola... Larvae chew on leaves resulting in 'windows' or holes and severe defoliation can mean reduced yield and quality... Chemical control: One spray may be cost-effective on young, moisture-stressed crops, or during the bolting stage if densities exceed 100 larvae per 10 sweeps...
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Catalogue: Broadacre Field Crops DAFF QLD
Larvae of the native budworm, cabbage centre moth and cabbage white butterfly, all of which have legs and may occur on canola... Larvae chew on leaves resulting in 'windows' or holes and severe defoliation can mean reduced yield and quality... Chemical control: One spray may be cost-effective on young, moisture-stressed crops, or during the bolting stage if densities exceed 100 larvae per 10 sweeps...
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