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midge resistance

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
" Date: 28.09.2008 RUTHERGLEN BUG, SORGHUM MIDGE AND DIAGNOSING POOR SEED SET IN GRAIN SORGHUM.. Samples of grain from heads infested with different densities of RGB have been analysed by NIR for changes in grain quality... The incorporation of this resistance within the DPI&F sorghum breeding program is being aided by the use of marker-assisted selection (MAS)...
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Catalogue: Ground Cover
Growers now have help in assessing the economics of insecticide spraying to control sorghum midge, a major sorghum pest, thanks to a new online spray calculator... Levels of resistance to the pest vary between hybrids and growers may still need to apply insecticide to protect crops... Growers sowing sorghum later in the season - or after neighbouring sorghum fields have flowered - can expect high midge pressure and lower yields...
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Catalogue: GRDC Media
Midge management made easier.. Author : Sarah Jeffrey, Northern growers and agronomists will be able to better manage the economic cost of controlling midge in sorghum crops this season with the help of a new online threshold calculator, developed by the Department of Agriculture Fisheries and Forestry (DAFF) entomology team... The calculator helps determine the economics of applying an insecticide, taking into account the midge resistance (MR) rating of the variety, row spacing, number of midge in the field as determined by the grower or consultant, crop value, cost of control and residual life of the chosen insecticide...
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Catalogue: GRDC Final Reports
Previous GRDC-funded projects have identified several Quantitative Trait Loci (QTL) controlling the most important biotic and abiotic constraints to sorghum production in Australia -midge resistance (MR) and staygreen (SG)... The markers have been screened in 12 other populations and the results suggest that all four SG and three of the four MR QTL are expressed in a variety of other germplasm (the fourth QTL is the subject of a separate GRDC-funded project and is not assessed )... The results suggest that marker-assisted selection can be undertaken with these SG and MR QTL with a high likelihood of the QTL being expressed...
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