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fertiliser investment

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Catalogue: GRDC Media
Most farmers in the region would prefer to then apply their nitrogen to soils with a full moisture profile to maximise the benefit to the crop of their fertiliser investment... The decision will have to be made sooner for some than others - many growers ordered urea six months ago when prices were low; they now need to decide whether to accept those orders and apply their usual rate to their full farming area, or let those early orders go and take more expensive product when it does decide to rain... The upside of applying nitrogen in dry conditions is that it will remain in the soil until activated by rainfall and infiltrate down the profile, whereas applying fertiliser N to a full moisture profile can lead to high gaseous losses through ammonia volatilisation and denitrification in the event of further heavy rainfall and waterlogging as it has nowhere to go...
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Catalogue: GRDC Media
Most farmers in the region would prefer to then apply their nitrogen to soils with a full moisture profile to maximise the benefit to the crop of their fertiliser investment... The decision will have to be made sooner for some than others - many growers ordered urea six months ago when prices were low; they now need to decide whether to accept those orders and apply their usual rate to their full farming area, or let those early orders go and take more expensive product when it does decide to rain... The upside of applying nitrogen in dry conditions is that it will remain in the soil until activated by rainfall and infiltrate down the profile, whereas applying fertiliser N to a full moisture profile can lead to high gaseous losses through ammonia volatilisation and denitrification in the event of further heavy rainfall and waterlogging as it has nowhere to go...
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Catalogue: GRDC Final Reports
There is a very significant opportunity to improve nutrient management because a wealth of information, tools, techniques and technologies already exist... History and the project show it can only achieve so much and is not specific enough to bring about long-term changes in the habits of decision-makers... There is a need for a concerted and consistent approach to nutrient management by the grains industry, including better utilisation of the existing adviser network as the conduit for information and change...
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Catalogue: GRDC Updates (West)
Higher prices for both fertiliser and grain mean that fertiliser needs to be better targeted and used more efficiently because of the increased risks of losses both at the over- and under-fertilising ends of the spectrum... The key requirements for making better fertiliser recommendations are realistic estimates of potential yield (A), knowledge of the maximum yield response to fertiliser input for a give nutrient status of the soil (B) and estimates of nutrient use efficiency or the curvature of the response curve (C)... Yield response of ryegrass to applied N is considered to be linear between applications of 0 3 00 kg N ha -1(Whitehead 1995), it was appropriate to consider the linear response to N applied in the biosolids and urea...
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Catalogue: GRDC Updates (West)
Mention of a trade name or company in this publication does not imply endorsement of any product or company by the Department of Agriculture... I was educated by a group of farmers at Varley in 1982, to the importance of Crop Updates is a partnership between the Department of Agriculture, Western Australia and the Grains Research & Development Corporation 22.. Advisers and consultants should highlight the management options available to their clients, do sensitivity analyses which in effect, tell the client 'what happens to production, quality and profitability, if he chooses a certain management option ' and show how that changes with input levels, season, soil type, prices going up/down, etc...
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