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nitrogen budgeting

Catalogue: GRDC Media
New era of collaboration to address N knowledge gaps.. A first-of-its-kind forum in Bundoora, Victoria, driven by industry and facilitated by the Grains Research and Development Corporation (GRDC), has identified a range of knowledge gaps which are ultimately impacting on crop yield and grower profit... "The goal of this first forum was to enable key stakeholders to contribute to designing a way forward to address the gaps identified in N management RD&E and how they may be involved in the solution," Mr Rice said...
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Catalogue: GRDC Factsheets
Nitrogen is vital to crop growth but it is mostly present in soil in an organic form that plants cannot take up... Organic nitrogen typically accounts for more than 90 per cent of all nitrogen in soil but usually is not directly available to plants... The ratio of carbon to nitrogen in residues is a deciding factor whether nitrogen is removed or released in the soil...
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Catalogue: GRDC Media
Rural Management Strategies consultant Chris Minehan says using Yield Prophet and plant available water capacity mapping to manage nitrogen can be more profitable than applying a blanket rate... Recent research conducted by Rural Management Strategies in New South Wales has found that managing nitrogen separately across varying soil types using Yield Prophet and plant available water capacity (PAWC) mapping can be more profitable than applying a blanket rate of nitrogen due to savings in fertiliser costs... During the 2013 and 2014 winter cropping seasons, the Grains Research and Development Corporation (GRDC) funded trials at Barmedman to demonstrate the use of Yield Prophet and PAWC mapping to improve nitrogen decision-making in wheat and canola...
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Catalogue: GRDC Media
Rural Management Strategies consultant Chris Minehan says using Yield Prophet and plant available water capacity mapping to manage nitrogen can be more profitable than applying a blanket rate... Recent research conducted by Rural Management Strategies in New South Wales has found that managing nitrogen separately across varying soil types using Yield Prophet and plant available water capacity (PAWC) mapping can be more profitable than applying a blanket rate of nitrogen due to savings in fertiliser costs... During the 2013 and 2014 winter cropping seasons, the Grains Research and Development Corporation (GRDC) funded trials at Barmedman to demonstrate the use of Yield Prophet and PAWC mapping to improve nitrogen decision-making in wheat and canola...
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Catalogue: GRDC Media
Grain growers eager to learn more about nutrient management on farm are invited to attend the More Profit from Crop Nutrition roadshow, being held at different locations through the northern region during July and August... Presented by the Grains Research and Development Corporation's (GRDC) More Profit from Crop Nutrition (MPCN) project in partnership with Queensland Department of Agriculture and Fisheries (DAF) and Birchip Cropping Group (BCG), the roadshow will bring together industry experts, successful farmers and local advisors to look in depth at the balance between soil nutrient balance and crop profitability... Crop nutrition can improve the return on investment from fertiliser inputs by improving the nutrient use efficiency of crops, improving the capacity of soils to supply nutrients, reducing the soil's propensity to lose or lock-up nutrients and develop improved fertiliser product formulation and design including the use of potentially valuable low cost and waste inputs...
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Catalogue: GRDC Media
Water logged soils can result in significant N loss through denitrification... Professor Grace says the first step in defining a nitrogen program is for growers to observe how their soils respond to rainfall to better understand how they are likely to lose nitrogen (see breakout box on types of N loss)... Previous work has shown that for every 1 kg of N lost as N 2 O, as much as 10-50 kg of N may be lost to N 2 ...
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Catalogue: GRDC Media
Water logged soils can result in significant N loss through denitrification... Professor Grace says the first step in defining a nitrogen program is for growers to observe how their soils respond to rainfall to better understand how they are likely to lose nitrogen (see breakout box on types of N loss)... Previous work has shown that for every 1 kg of N lost as N 2 O, as much as 10-50 kg of N may be lost to N 2 ...
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