1. Instituto Nacional de Tecnología Agropecuaria (INTA); EEA Bariloche; Bariloche Río Negro Argentina
2. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Patagonia Norte Argentina
3. Department of Soil Science and Agricultural Engineering; University of Zimbabwe; Harare Zimbabwe
4. Farming Systems Ecology Group; Wageningen University; Wageningen The Netherlands