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Catalogue: Broadacre Field Crops DAFF QLD
As moisture conditions become more limiting, the earlier-maturing hybrids will have greater yield reliability... Slower-maturing hybrids will generally give higher yields than quick-maturing hybrids when moisture and nutrients are not limiting... There are some hybrids that produce poor quantities of pollen (and are more susceptible to the disease) if flowering during cool conditions...
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Catalogue: Broadacre Field Crops DAFF QLD
As moisture conditions become more limiting, the earlier-maturing hybrids will have greater yield reliability... Slower-maturing hybrids will generally give higher yields than quick-maturing hybrids when moisture and nutrients are not limiting... There are some hybrids that produce poor quantities of pollen (and are more susceptible to the disease) if flowering during cool conditions...
Related categories:
Catalogue: Broadacre Field Crops DAFF QLD
As moisture conditions become more limiting, the earlier-maturing hybrids will have greater yield reliability... Slower-maturing hybrids will generally give higher yields than quick-maturing hybrids when moisture and nutrients are not limiting... There are some hybrids that produce poor quantities of pollen (and are more susceptible to the disease) if flowering during cool conditions...
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Catalogue: GRDC Updates (South)
Crops should be inspected for ergot 10-14 days after flowering during cool, wet weather Concentrate on crop edges Estimate infection levels of approximately 100 heads (a level of <1% infected spikelet should be safe) Spray out plants if late tillers are infected Increase fan speed of headers to maximise sclerote removal during harvesting Harvest heavily contaminated areas of the crop separately 18.. Preliminary calculations suggest that for mirids, sweep net counts can be converted to beat cloth equivalents per square metre by dividing them by 2.2, provided the following protocols are used: Take 20 sweeps in 20 metres, with each sweep passing through one (1) metre of crop... It is essential that we start thinking about heliothis management in a farming systems context, looking closely at managing populations in all crops during the year...
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Catalogue: GRDC Updates (North)
Crops should be inspected for ergot 10-14 days after flowering during cool, wet weather Concentrate on crop edges Estimate infection levels of approximately 100 heads (a level of <1% infected spikelet should be safe) Spray out plants if late tillers are infected Increase fan speed of headers to maximise sclerote removal during harvesting Harvest heavily contaminated areas of the crop separately 18.. Preliminary calculations suggest that for mirids, sweep net counts can be converted to beat cloth equivalents per square metre by dividing them by 2.2, provided the following protocols are used: Take 20 sweeps in 20 metres, with each sweep passing through one (1) metre of crop... It is essential that we start thinking about heliothis management in a farming systems context, looking closely at managing populations in all crops during the year...
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Catalogue: Broadacre Field Crops DAFF QLD
Honeydew oozing on a grain sorghum head caused by Claviceps africana (ergot)... Crops at greatest risk are: forage sorghums heads on ratoon crops flowering late in the season tillers on late-flowering plants crops in which pollination has been affected by a cold snap before or at flowering... To minimise the risk of ergot contamination, growers should: sow at recommended times ensure even flowering (use press wheels, high-germination seed, accurate seed depth control; good crop nutrition, wide row spacing (90-100 cm), especially with hybrids that tiller heavily, and consider pre-harvest kill-off of tillers using glyphosate herbicide) graze forage sorghum heavily to delay flowering until after grain sorghum has flowered...
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Catalogue: Broadacre Field Crops DAFF QLD
Honeydew oozing on a grain sorghum head caused by Claviceps africana (ergot)... Crops at greatest risk are: forage sorghums heads on ratoon crops flowering late in the season tillers on late-flowering plants crops in which pollination has been affected by a cold snap before or at flowering... To minimise the risk of ergot contamination, growers should: sow at recommended times ensure even flowering (use press wheels, high-germination seed, accurate seed depth control; good crop nutrition, wide row spacing (90-100 cm), especially with hybrids that tiller heavily, and consider pre-harvest kill-off of tillers using glyphosate herbicide) graze forage sorghum heavily to delay flowering until after grain sorghum has flowered...
Related categories:
Catalogue: Broadacre Field Crops DAFF QLD
Honeydew oozing on a grain sorghum head caused by Claviceps africana (ergot)... Crops at greatest risk are: forage sorghums heads on ratoon crops flowering late in the season tillers on late-flowering plants crops in which pollination has been affected by a cold snap before or at flowering... To minimise the risk of ergot contamination, growers should: sow at recommended times ensure even flowering (use press wheels, high-germination seed, accurate seed depth control; good crop nutrition, wide row spacing (90-100 cm), especially with hybrids that tiller heavily, and consider pre-harvest kill-off of tillers using glyphosate herbicide) graze forage sorghum heavily to delay flowering until after grain sorghum has flowered...
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Catalogue: Broadacre Field Crops DAFF QLD
Crops planted after the end of January in southern Queensland and mid-February in Central Queensland run an increased risk of ergot infection, an airborne fungal disease that is favoured by cool wet conditions during flowering... Management relies on good agronomic practices... If planting outside the recommended window, growers need to aim for an evenly flowering crop to ensure that there are large quantities of highly viable pollen during flowering, because flowers that are fertilised by pollen are resistant to infection by the ergot spores...
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Catalogue: Broadacre Field Crops DAFF QLD
Crops planted after the end of January in southern Queensland and mid-February in Central Queensland run an increased risk of ergot infection, an airborne fungal disease that is favoured by cool wet conditions during flowering... Management relies on good agronomic practices... If planting outside the recommended window, growers need to aim for an evenly flowering crop to ensure that there are large quantities of highly viable pollen during flowering, because flowers that are fertilised by pollen are resistant to infection by the ergot spores...
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