The Role of Nitrogen in Wheat Production: Response, Interaction and Prediction of Nitrogen Requirements in the UK.
Winter wheat is now the most important arable crop in the UK, and increased use of fertiliser nitrogen (N) has played a large part in achieving the current high yield levels.
The development and form of Agricultural Development and Advisory Service, Ministry of Agriculture Fisheries and Food nitrogen recommendations is described. Interactions possibly influencing response to N, the use of soil and plant analysis as response predictors, and effects of timing of N are reviewed.
The replacement of the present empirical methods of predicting nitrogen requirements by more precise mathematical methods is dependent upon an adequate experimental basis for the development and testing of new systems of predictions.
P Needham, Agricultural Development and Advisory Service (ADAS), London, UK.
23 Pages, 20 References.