Systems thinking and practice for alley cropping research

摘要: Systemic and reductionist methodologies were applied to explore alley cropping systems. Alder (Alnus rubra) black locust (Robina pseudoacacia) are grown as green manure in sweet corn production Our research includes the study of biological, ecological, social interactions. The overarching approach follows Hawkesbury systems agriculture model which interactions explored on four levels research. On a basic science level, we soil food web composition nitrogen cycling plant-soil system by using new 15N method that involves direct injection tracer into xylem trees. Applied field response trees crops various planting patterns N equivalence trials. Optimized inquiry is third level involving modelling limited light nitrogen. Field data compared with predicted tree crop growth. Finally, human action investigates components this system. We use participatory appraisal techniques such farmer-scientist focus sessions mapping improve farmers’ ability deal complexity their farming learn about decision making.