An integrated modelling approach is needed to efficiently utilize nutrients within the farm boundary to control the risk of non-point-source pollution while maintaining farm profitability. The Cornell University Nutrient Management Planning System (CuNMPS) is being developed for that purpose. The...

Results are presented of field experiments during 1998-2003 in the Manupali River Watershed (Mindanao, Philippines) designed to evaluate tree-based (Eucalyptus grandis) and improved fallow (sunflower and Tithonia diversifolia) production systems with annual crops (tomato, maize, beans [Phaseolus]...

Legume-based green manures (LGMs) are crops that are grown with the specific purpose of improving soil quality and consequently the long-term productivity of crops. Although the traditional focus has been on the supply of nitrogen (N) to the system, they have a wide range of potential benefits that ...