The OVERSEER® nutrient budget model is an on-farm decision support model to help users develop nutrient budgets for nitrogen (N), phosphorus (P), potassium (K) and sulphur (S), calcium (Ca), magnesium (Mg), sodium (Na) and hydrogen (potential acidity) on a block and farm scale.
The model was primarily designed as decision support software to aid with maintenance nutrients and lime recommendations, nutrient use efficiency and environmental effect reports. The model has expanded in capacity over time in response to additional drivers, and this process will continue with new management and mitigation options planned.
Fertiliser and Lime Research Centre, At: Massey University, Palmerston North, New Zealand Volume: Implementing Sustainable Nutrient Management Strategies in Agriculture, Occasional Report No. 19. Currie, L.D., Hanly, J.A. (Eds.),
Wheeler, Ledgard, Monaghan, McDowell, deKlein