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Catalogue: Ground Cover
While the frost was a depressing outcome to what could have been a reasonable year for many growers, it will mean research data is available for analysis, which will take researchers one step closer to better understanding how to best to protect crops from frost events in the future... GRDC National Frost Initiative trials are accumulating data on how growers can manage crops to minimise the severity and duration of frost.. The research agronomist says experience shows that when frost-prone areas are not managed the financial losses tend to be more significant when a frost hits...
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Catalogue: Ground Cover
While the frost was a depressing outcome to what could have been a reasonable year for many growers, it will mean research data is available for analysis, which will take researchers one step closer to better understanding how to best to protect crops from frost events in the future... GRDC National Frost Initiative trials are accumulating data on how growers can manage crops to minimise the severity and duration of frost.. The research agronomist says experience shows that when frost-prone areas are not managed the financial losses tend to be more significant when a frost hits...
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Catalogue: GRDC Media
Stubble removal can help reduce frost risk in prone areas.. Reducing stubble loads to 2t/ha can lift yields by 0.6-0.8t/ha if frost hits during the flowering window or early grain fill... The DAFWA model FLOWER POWER is a useful way to compare time of sowing and variety choice, to ensure a wider flowering window to spread the risk of frost and heat stress...
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Catalogue: GRDC Media
Stubble removal can help reduce frost risk in prone areas.. Reducing stubble loads to 2t/ha can lift yields by 0.6-0.8t/ha if frost hits during the flowering window or early grain fill... The DAFWA model FLOWER POWER is a useful way to compare time of sowing and variety choice, to ensure a wider flowering window to spread the risk of frost and heat stress...
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Catalogue: Ground Cover
Stubble removal takes the sting from frosts.. Living Farm and Facey Group trials in 2012 and GRDC-funded grower group trials in 2013 found lowering stubble loads to about two tonnes per hectare in low-lying, frost-prone areas could save yields by as much as 0.8t/ha in circumstances where frost hits during the flowering window or during grain fill... Living Farm research agronomist Rebecca Jenkinson says the group's 2012 stubble management trials at York showed that plots where stubble was burned: were 1 C warmer at canopy height than retained-stubble plots during a frost event; spent an average of one hour less below 0 C during a frost event; and produced an average wheat yield of 1.7t/ha compared with retained-stubble plots at 0.4t/ha...
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Catalogue: GRDC Media
Frost publication addresses hot research topic.. New frost research will look at the possibility of using remote sensing technology to detect frost damage in wheat and the likelihood of these damaged crops going on to yield sufficient grain... "The trials, supervised by Living Farm and assisted by the Department of Agriculture and Food (DAFWA), show that stubble appears to insulate the soil surface, which lowers the amount of heat absorbed into the soil compared with paddocks without stubble...
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Catalogue: GRDC Updates
Pre-emergent herbicides provided greater than 95% control of annual ryegrass in this demonstration trial... There was a definite difference in the level of control recorded between pre-emergent herbicides tested... The stubble load in this trial was estimated at 5t/ha (Figure 11)...
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Catalogue: Ground Cover
Consultant Bill Gordon looks at the factors to consider for early herbicide applications - By Bill Gordon.. In many areas the preparation for winter grain crops involves the application of a residual herbicide to control weeds that may germinate during the crop's growth... The use of offset nozzles (angled forwards or backwards) and twin nozzles have been shown to increase the evenness of deposition on the soil surface (have a look at Syngenta's tech notes for residual herbicides, which can be found on the company's website)...
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Catalogue: GRDC Publications
The stubble management decisions each of these growers made in 2010-2011 were unique to the individual and were influenced by the combination of experiences, cropping systems, agronomic and logistic challenges, and commitment to full stubble retention... The value of grazing crop stubbles to farm profitability was overestimated by the ME value of the intake the value of grazing crops cannot be predicted using energy intake from stubble... Finally the burning of stubbles also contributed to weed 26Australian Glyphosate Sustainability Working Group, Australian Herbicide Resistance Institute (2013), 9 Oct 2013...
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Catalogue: GRDC Publications
Ultimately I don't believe this has been to the detriment of the soil as we are travelling on rm ground and getting a better mix, a leveller paddock and better conditions to sow into with our Simplicity Bar'... We have used the machine on stubble in January 2010 and had massive wind storms a day or so later with no lifting of the soil whatsoever which was a big bonus compared to neighbouring sheep grazed and bare paddocks.".. Yield increases for wheat-on-wheat sowing into standing stubble were measured on 7 out of 10 sites over 4 years (Table 1)...
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