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nitrogen application

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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: GRDC Media
"Results from the project suggest that trying to increase wheat protein with late foliar N application is unlikely to be a very effective management tool in areas where spring rainfall is highly erratic," he said... Although the late foliar application of N can deliver significant increases in protein, it is unlikely to deliver an economic benefit unless grain N recovery rates are high, untreated protein levels are close to a receival grade threshold and the premium between receival grades is at least $20/t," he said... "In terms of application, multiple low rate application in the 2014 trials did not appear to improve the response compared to the same rate applied in one application...
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Catalogue: GRDC Media
"Results from the project suggest that trying to increase wheat protein with late foliar N application is unlikely to be a very effective management tool in areas where spring rainfall is highly erratic," he said... Although the late foliar application of N can deliver significant increases in protein, it is unlikely to deliver an economic benefit unless grain N recovery rates are high, untreated protein levels are close to a receival grade threshold and the premium between receival grades is at least $20/t," he said... "In terms of application, multiple low rate application in the 2014 trials did not appear to improve the response compared to the same rate applied in one application...
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Catalogue: GRDC Media
New research has revealed that hybrid canola varieties are potentially a profitable break crop option for Western Australia's low rainfall zones and that growers in these areas can make savings by delaying decisions about nitrogen applications for these varieties in particular... DAFWA senior research officer Mark Seymour said the results, presented at this year's Regional Crop Update at Salmon Gums, indicated that hybrid RR lines could provide opportunities for growers in the region to use low rates of nitrogen at seeding and then add more nitrogen, as needed, to reach optimal yield... Mr Seymour said the trial highlighted the importance of assessing the nitrogen status of the crop and ensuring that canola was not over-fertilised in low rainfall areas, as the reduction of oil content levels with increased nitrogen could also lead to big discounts...
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Catalogue: GRDC Updates
Phosphorus application improves grain yield regardless of variety choice, but limit the amount of P applied in direct contact with seed... Due to lack of adequate follow-up rain at both Nyngan and Trangie sites after the in-crop application, only the rate component of 2013 trials is reported ... Although N application can increase grain yield, it may reduce oil concentration in the grain, as shown at Gilgandra in 2012...
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Catalogue: GRDC Publications
" Goondiwindi GRDC Grains Research Update Day 1 - Tuesday 4 th March Time Topic Speaker (s) 10:00 AM James Clark (Chair Northern Welcome Panel GRDC) 10:10 AM General plenary (Supported by North West Local Land Services) 10:10 AM 10:40 AM.. Overall, both models are acceptable for modelling soil evaporation over a range of soils and seasons provided accurate soil physical properties and starting water states are known... Overall, populations increased five times compared to before planting the summer crops, but remained below 250/kg soil (Figure 4)...
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Catalogue: GRDC Publications
Influence of fungicide rate (mean of fungicide products - four site mean) Stem rust control assessed over the four trial sites revealed that using high rates was essential for the control of the disease, even if the fungicide had been applied prophylactically (before infection was visible in the crop)... Influence of cultivar resistance and fungicide application (Prosaro ) on yield and stem rust severity measured on the flag sheath 18 days after fungicide application at early dough (GS82) and assessed at mid dough - physiological maturity (GS85-90) - Bairnsdale, Gippsland, Victoria, 2010... The yield potential for the crop with no nitrogen applied is estimated at GS30 from the results of numerous of trials conducted in that region where NDVI at GS30 is divided by the number of growing degree days (GDD) greater than 0 C since planting, referred to as the INSEY units (in season estimate of yield)...
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Catalogue: GRDC Updates (North)
NITROGEN - CATCHING MORE DOLLARS PER UNIT.. Gulargambone Grains Research Update 15 thFebruary, 2006 domestic stock feed industry will see that country emerge over the next two or three years as a significant importer... Gulargambone Grains Research Update 15 thFebruary, 2006 taken in strips that are not limited for nitrogen which are then compared against the rest of the paddock which has been grown under a lower nitrogen environment...
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Catalogue: GRDC Factsheets
Higher yields require increased monitoring and correct management practices to avoid yield penalties... nitrogen supply at sowing should be 100-120kg n/ha, including the amount already in the soil and amount to be applied... Trial results have shown a narrower row spacing, such as 17.5 centimetres (above), can give higher yields in irrigated wheat than wider row spacings...
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Catalogue: Ground Cover
By using the right amount of fertiliser at sowing and monitoring crop requirements throughout the season, growers can ensure nutrient-rich water doesn't escape into nearby rivers and simultaneously improve crop profitability," Dr Nash says... Better defining the relationships between inorganic soil nitrogen, fertiliser application rates and yield for different seasonal conditions is important. ".. Researchers found: Dr Nash says that minimising nitrogen applications at sowing also reduces non-redeemable costs and defers some expenditure decisions until later in the season when other factors affecting crop performance, such as moisture limitations or waterlogging, are evident. "..
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