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Catalogue: Broadacre Field Crops DAFF QLD
Larger larvae (10-15 mm long) have a pigment free, cream-yellow coloured body that tapers to the rear and a dark, somewhat flattened head capsule... Eggs are initially white and develop a red ring closer to hatching... Use of broad-spectrum insecticides for control often provides poor efficacy and destroys natural enemies, leading to a resurgence of tipworm and outbreaks of secondary pests such as spider mites...
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Catalogue: Broadacre Field Crops DAFF QLD
Larger larvae (10-15 mm long) have a pigment free, cream-yellow coloured body that tapers to the rear and a dark, somewhat flattened head capsule... Eggs are initially white and develop a red ring closer to hatching... Use of broad-spectrum insecticides for control often provides poor efficacy and destroys natural enemies, leading to a resurgence of tipworm and outbreaks of secondary pests such as spider mites...
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Catalogue: Broadacre Field Crops DAFF QLD
Moths have a 45 mm wingspan and are larger than other Mocis species... Monitoring: Inspect crops weekly during the vegetative stage and twice weekly from very early budding onwards until crops are no longer susceptible to attack (late podding)... Crops should be scouted for looper eggs and moths to pinpoint the start of infestations and to increase the chance of success of biopesticides such as Bacillus thuringiensis (Bt)...
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Catalogue: Broadacre Field Crops DAFF QLD
Moths have a 45 mm wingspan and are larger than other Mocis species... Monitoring: Inspect crops weekly during the vegetative stage and twice weekly from very early budding onwards until crops are no longer susceptible to attack (late podding)... Crops should be scouted for looper eggs and moths to pinpoint the start of infestations and to increase the chance of success of biopesticides such as Bacillus thuringiensis (Bt)...
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Catalogue: Broadacre Field Crops DAFF QLD
Insect pests that feed on plant structures that directly produce yield, such as growing tips and fruiting structures, are generally the greatest problem in a cotton crop... The cotton plant has an indeterminate growing pattern (fruit are present for most of the season), which allows some pests to develop through several generations... In cotton, all stages of plant growth may be attacked but reproductive tissue is preferred...
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Catalogue: Broadacre Field Crops DAFF QLD
Insect pests that feed on plant structures that directly produce yield, such as growing tips and fruiting structures, are generally the greatest problem in a cotton crop... The cotton plant has an indeterminate growing pattern (fruit are present for most of the season), which allows some pests to develop through several generations... In cotton, all stages of plant growth may be attacked but reproductive tissue is preferred...
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Catalogue: Broadacre Field Crops DAFF QLD
Insect pests that feed on plant structures that directly produce yield, such as growing tips and fruiting structures, are generally the greatest problem in a cotton crop... The cotton plant has an indeterminate growing pattern (fruit are present for most of the season), which allows some pests to develop through several generations... In cotton, all stages of plant growth may be attacked but reproductive tissue is preferred...
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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
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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