Publication Date
1997
Description
New management strategies are required in order to reduce the appreciable emissions of N from intensively managed grassland. Previous work has shown that if fertiliser is applied at rates that take account of the mineral N found in soil at the time of each application, N use efficiency can be improved. A novel approach is described which integrates soil testing and modelling to produce N fertiliser recommendations on a monthly basis. An existing annual model of the N cycle in grassland has been modified to produce monthly predictions of mineral N in the soil. The model is being validated by data from a replicated cut plot experiment at 3 sites.
Citation
Brown, L; Scholefield, D; Jewkes, E C.; and Preedy, N, "An Integrated Soil Testing-Modeling Approach to Improve Fertilizer Recommendations for Grassland" (2024). IGC Proceedings (1997-2023). 12.
https://uknowledge.uky.edu/igc/1997/session11/12
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
An Integrated Soil Testing-Modeling Approach to Improve Fertilizer Recommendations for Grassland
New management strategies are required in order to reduce the appreciable emissions of N from intensively managed grassland. Previous work has shown that if fertiliser is applied at rates that take account of the mineral N found in soil at the time of each application, N use efficiency can be improved. A novel approach is described which integrates soil testing and modelling to produce N fertiliser recommendations on a monthly basis. An existing annual model of the N cycle in grassland has been modified to produce monthly predictions of mineral N in the soil. The model is being validated by data from a replicated cut plot experiment at 3 sites.
