Minimising nitrogen losses to improve use efficiency in summer crops

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Bell, M. J., Schwenke, G. D. and Lester, D. W. (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
Live Archive:	11 Jan 2017 06:37
Last Modified:	29 Nov 2022 01:01

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