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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: Ground Cover
Beat sheet and sweep net sampling of faba beans both severely underestimate the density of helicoverpa larvae, particularly smaller ones; a visual inspection is critical to improving pest number estimates.. Populations may be exceeding threshold before this is detected," Dr Miles says... Insect damage is not responsible for the majority of defective grain but further analysis is warranted to consider how the pod damage caused by helicoverpa may be contributing to weathering and poor colour in faba beans by allowing entry of fungi and bacteria...
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Catalogue: Ground Cover
Beat sheet and sweep net sampling of faba beans both severely underestimate the density of helicoverpa larvae, particularly smaller ones; a visual inspection is critical to improving pest number estimates.. Populations may be exceeding threshold before this is detected," Dr Miles says... Insect damage is not responsible for the majority of defective grain but further analysis is warranted to consider how the pod damage caused by helicoverpa may be contributing to weathering and poor colour in faba beans by allowing entry of fungi and bacteria...
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Catalogue: Broadacre Field Crops DAFF QLD
The lawn armyworm occurs throughout Queensland but more commonly in coastal and subcoastal areas... Recorded hosts of lawn armyworms include barley, bermuda grass, green panic, kikuyu, McCoy grass, nut grass, oats, orchard grass, pangola, para grass, paspalum, sedge, wheat and most lawn grasses... Liberal applications of nitrogen fertiliser and water to lawns and pastures will often assist plant recovery after the armyworms have left or been controlled...
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Catalogue: Broadacre Field Crops DAFF QLD
The lawn armyworm occurs throughout Queensland but more commonly in coastal and subcoastal areas... Recorded hosts of lawn armyworms include barley, bermuda grass, green panic, kikuyu, McCoy grass, nut grass, oats, orchard grass, pangola, para grass, paspalum, sedge, wheat and most lawn grasses... Liberal applications of nitrogen fertiliser and water to lawns and pastures will often assist plant recovery after the armyworms have left or been controlled...
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Catalogue: Broadacre Field Crops DAFF QLD
The lawn armyworm occurs throughout Queensland but more commonly in coastal and subcoastal areas... Recorded hosts of lawn armyworms include barley, bermuda grass, green panic, kikuyu, McCoy grass, nut grass, oats, orchard grass, pangola, para grass, paspalum, sedge, wheat and most lawn grasses... Liberal applications of nitrogen fertiliser and water to lawns and pastures will often assist plant recovery after the armyworms have left or been controlled...
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Catalogue: Broadacre Field Crops DAFF QLD
Adults and larvae of ladybirds are important predatory insects in most crops, especially early season and when chemicals have not been used against pests... Maculate ladybird Harmonia octomaculata , (three-banded ladybird) adults 6 mm long, larvae are up to 6 mm long... Variable ladybird Coelophora inaequalis , adults 5 mm long, larvae are up to 7 mm long...
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Catalogue: Broadacre Field Crops DAFF QLD
Adults and larvae of ladybirds are important predatory insects in most crops, especially early season and when chemicals have not been used against pests... Maculate ladybird Harmonia octomaculata , (three-banded ladybird) adults 6 mm long, larvae are up to 6 mm long... Variable ladybird Coelophora inaequalis , adults 5 mm long, larvae are up to 7 mm long...
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