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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: GRDC Updates
Spread of bacterial blight is limited in PBAPercy and PBAOura field peas compared to Kaspa ... Ascochyta blight of lentils survives at least three years within a paddock... Lesions were more likely to occur in crops of Nugget, PBAFlash or Nipper if Nugget or PBAFlash lentils had been grown in that paddock the previous 2 or 3 years...
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Catalogue: Broadacre Field Crops DAFF QLD
There are a number of different strains of Bt, and each is specific to an insect group, e.g. moths, beetles or flies... Bt causes larvae to stop feeding soon after the Bt is eaten... Bt is often mixed with additives such as stickers or feeding attractants to increase its efficacy...
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Catalogue: Broadacre Field Crops DAFF QLD
There are a number of different strains of Bt, and each is specific to an insect group, e.g. moths, beetles or flies... Bt causes larvae to stop feeding soon after the Bt is eaten... Bt is often mixed with additives such as stickers or feeding attractants to increase its efficacy...
Related categories:
Catalogue: Broadacre Field Crops DAFF QLD
There are a number of different strains of Bt, and each is specific to an insect group, e.g. moths, beetles or flies... Bt causes larvae to stop feeding soon after the Bt is eaten... Bt is often mixed with additives such as stickers or feeding attractants to increase its efficacy...
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Catalogue: Ground Cover
Data presented showed that farm practices that have a positive impact on soil biology include no-till, effective crop sequencing (rotations), lime applications and building up soil carbon... Soil microbiologist Dr Lori Phillips of the Victorian Department of Environment and Primary Industries (DEPI) says there are direct links between the microbes that release nitrogen from crop residues and soil sources, and the microbes that convert fertiliser nitrogen to crop-available nitrogen... In related research, the University of Western Australia's Professor Dan Murphy said his work had shown that organic molecules released from plant roots had more influence on the microbes that can retain (immobilise) nitrogen than soil organic carbon levels...
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