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lodging risk

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Catalogue: GRDC Publications
Best Practice Guidelines Cotton Farming Systems.. Growers may achieve maximum profitability by applying additional spring-irrigations... The nitrogen requirement of an 8 t/ha wheat crop is approximately 275 kg N/ha studies in 2008 showed that many long-fallow paddocks that lodged had well in excess of this amount of nitrogen available (see Figure 9 (a))...
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Catalogue: GRDC Updates
Increasing Yield of Irrigated Wheat in Queensland and Northern NSW.. We present preliminary results from the GRDC funded 'Achievable Yields' project on the yield potential of irrigated wheat across the region... Results of sampling 12 irrigated wheat paddocks across southern QLD in 2008 (a) mineral N in the top 1.8 m of soil at sowing (b) grain yield reported by farmers, and yield loss calculated from the difference between potential yield (estimated from APSIM or non-lodged quadrats) and quadrat cuts of lodged crops...
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Catalogue: GRDC Updates
Irrigated wheat appears to have a similar optimum planting rate to dryland: around 40kg/ha (100 plants/m2), possibly lower if the seed is going to be concentrated on top of a bed with large furrow gaps between beds. Planting higher rates than this will increase lodging susceptibility and could cause yield loss if it induces greater rates of lodging... Further work will be needed to experiment with different timings of N application to see how sensitive the strategy is to the date of N application, and if any slow release fertiliser products would be of benefit... Yield and water use benchmarks Preliminary analysis has been undertaken to determine the maximum yields that can be achieved from irrigated wheat in the northern region, and how much water is required by the crop in order to achieve these yields...
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Catalogue: GRDC Updates
The Achievable Yields project is aiming to set yield and water use benchmarks for irrigated wheat in the northern region, while also helping growers address the main agronomic challenges that prevent them from maximising grain yield... Reducing sowing rate for lodging control: 2009 trials In 2008, very high seeding rates of 200+ seeds/m2 were used in many locations for irrigated wheat (or approximately 80kg/ha of seed or higher)... Yield and water use benchmarks Preliminary analysis has been undertaken to determine the maximum yields that can be achieved from irrigated wheat in the northern region, and how much water is required by the crop in order to achieve these yields...
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Catalogue: GRDC Publications
Please note that the research described in this paper has been carried out in New Zealand and that the use of agrochemicals in this applied research does not constitute a recommendation... Yield trends in wheat in New Zealand reveal large increases in productivity over the last twenty years... The Sirius wheat model developed by Plant & Food Research illustrates that there may be potential to capture more yield by moving sowing dates even further forward in New Zealand, although the model has not been validated for sowing earlier than April...
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Catalogue: GRDC Updates
While irrigated production was the focus of the work, the results are relevant to dryland growers in high yielding environments, who have experienced lodging in the last 2-3 years... It is important to note that we used various commercial fungicides to control rust at each location: good disease control is imperative in achieving high yields in susceptible varieties... The soil test just prior to sowing showed 200 units of N to 90cm depth, and another test suggested that a further 200 units of N was available as deep N below 90cm, but it was difficult to know how variable this was across the four different sections...
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Catalogue: GRDC Factsheets
ReduCing LOdging RiSK in iRRigATed wHeAT.. Canopy management techniques are used around the world to decrease lodging risk and increase yield in high-yielding wheat crops, and were used in Queensland's first verified eight tonnes per hectare wheat crop... Key poInts Lodging risk can be reduced by managing crops to limit canopy growth during tillering...
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Catalogue: GRDC Factsheets
ReduCing LOdging RiSK in iRRigATed wHeAT.. Canopy management techniques are used around the world to decrease lodging risk and increase yield in high-yielding wheat crops, and were used in Queensland's first verified eight tonnes per hectare wheat crop... Key poInts Lodging risk can be reduced by managing crops to limit canopy growth during tillering...
Related categories:
Catalogue: GRDC Factsheets
ReduCing LOdging RiSK in iRRigATed wHeAT.. Canopy management techniques are used around the world to decrease lodging risk and increase yield in high-yielding wheat crops, and were used in Queensland's first verified eight tonnes per hectare wheat crop... Key poInts Lodging risk can be reduced by managing crops to limit canopy growth during tillering...
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Catalogue: Ground Cover
"Having high N levels in combination with good water supply early in the crop's life is a recipe for high lodging risk, although there are several other agronomic factors that increase lodging risk as well," he says... "Delayed N application seems to reduce lodging risk substantially, but only if the crop shows symptoms of moderate to heavy nitrogen stress at GS31," he says... We are still experimenting with the best rates, but it appears that N levels need to be at or lower than about 40 to 80 units of N (inherent soil N plus applied N) in the top 90 centimetres at sowing to really achieve the right level of N stress to substantially reduce lodging risk...
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