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n application

Catalogue: Ground Cover
Delaying top-up nitrogen (N) applications until canola crops are flowering is unlikely to incur big yield or oil production penalties in lower-rainfall parts of the Western Australian grainbelt... Mr Seymour says at the majority of sites across the two years, delaying N application until eight or 12 weeks after sowing (near to flowering) or splitting applications produced similar yield results to earlier times of N application... Mr Seymour says splitting applications to 25kg N/ha at sowing and 25kg N/ha eight or 12 weeks later had a better effect on oil and yield than applying a single dose of 50kg N/ha near flowering...
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Catalogue: GRDC Updates
There were limited yield responses to topdressing N in 2005 and 2006 (1/11 sites) Top-dressing resulted in increases in grain protein rather then grain yield indicating that N application needs to occur before the 8 leaf stage to maximise yield responses... The aim of the research was to determine whether in-crop N application is a useful practice in wheat and sorghum for farmers in the northern cropping zone... In contrast to grain yield, grain protein showed a more frequent increase with top-dressing indicating that N application may have occurred too late to contribute to yield...
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Catalogue: GRDC Updates
Nutrient rates used are 40 kg P (MAP or a fluid source), 200 kg K (SOP or MOP), and 40-80 kg S (SOA or ATS), with the high application rates designed to allow impacts to be followed through an extended crop rotation... Urea was applied to either balance the N application from MAP, SOA, ATS or applied at a rate to make N non-limiting... All are intended to be evaluated over a series of crops at each site, rather than one-off snap-shots, helping us to understand the residual value of fertilizers applied in northern soils and climates...
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Catalogue: Ground Cover
Delaying top-up nitrogen (N) applications until canola crops are flowering is unlikely to incur big yield or oil production penalties in lower-rainfall parts of the Western Australian grainbelt... Mr Seymour says at the majority of sites across the two years, delaying N application until eight or 12 weeks after sowing (near to flowering) or splitting applications produced similar yield results to earlier times of N application... Mr Seymour says splitting applications to 25kg N/ha at sowing and 25kg N/ha eight or 12 weeks later had a better effect on oil and yield than applying a single dose of 50kg N/ha near flowering...
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Catalogue: Ground Cover
Canola N strategies may need rethink.. Grain Orana Alliance chief executive officer Maurie Street is encouraging canola growers to reassess their approach to N management and investment to avoid leaving valuable yield "in the paddock"... "After running these trials and seeing the response to what would traditionally be considered very high rates of N, it's now my belief that many growers could be leaving a significant amount of yield in the paddock due to lack of N...
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Catalogue: Ground Cover
Canola N strategies may need rethink.. Grain Orana Alliance chief executive officer Maurie Street is encouraging canola growers to reassess their approach to N management and investment to avoid leaving valuable yield "in the paddock"... "After running these trials and seeing the response to what would traditionally be considered very high rates of N, it's now my belief that many growers could be leaving a significant amount of yield in the paddock due to lack of N...
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Catalogue: GRDC Updates (North)
Modelling the risks involved with splitting N application at Bellata over a number of years.. Current best nitrogen management practice is generally to assess soil water and soil nitrogen levels before sowing, estimate yield potential and fertilise all prior to, or at, sowing because it is too risky to apply in-crop... There is a large decrease in frequency from one to two rainfall events, suggesting growers would need to be very organised and be able to respond in a short time frame to take advantage of incrop N application opportunities...
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Catalogue: GRDC Updates (South)
Stubble and fallow management are key determinants of survival, infection and yield loss from CR. Burning wheat residue has been promoted as one option for the control of CR... Delaying the onset of stripe rust within a crop is the key to significantly reducing the risk of yield loss to this disease in 2005... Stripe rust specific seed treatments are not required and crops should simply be monitored early for the development of stripe rust and a foliar fungicide applied if severe early infection warrants it...
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Catalogue: GRDC Updates (North)
Stubble and fallow management are key determinants of survival, infection and yield loss from CR. Burning wheat residue has been promoted as one option for the control of CR... Delaying the onset of stripe rust within a crop is the key to significantly reducing the risk of yield loss to this disease in 2005... Stripe rust specific seed treatments are not required and crops should simply be monitored early for the development of stripe rust and a foliar fungicide applied if severe early infection warrants it...
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