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Minimising nitrogen losses to improve use efficiency in summer crops

Bell, Michael J. and Schwenke, Graeme D. and Lester, David William (2016) Minimising nitrogen losses to improve use efficiency in summer crops. In: GRDC Grower Update - 2016, Toowoomba (Wellcamp) and Chinchilla.

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Abstract

As reliance on N fertilizer increases, getting good crop recovery of applied N is essential. Crop N recovery is most efficient when N is distributed through the root volume.
Gaseous losses of fertilizer N can be substantial, with denitrification of greatest concern for summer sorghum.
Ensuring fertilizer N is in the crop or deeper in the soil profile is the best defence against loss. Controlled release fertilizers can reduce denitrification but are rarely economic; legume N is effective

Item Type:Conference or Workshop Item (Paper)
Business groups:Crop and Food Science
Keywords:Nitrate denitrification; ammonia volatilisation; N use efficiency; 15N recovery
Subjects:Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Agriculture > Agriculture (General) > Fertilisers
Plant culture > Field crops
Deposited On:11 Jan 2017 06:37
Last Modified:11 Jan 2017 06:37

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