1. Departamento de Ciencias Agropecuarias y Alimentos; Universidad Técnica Particular de Loja; San Cayetano Alto s/n 1101608 Loja Ecuador
2. Unidad de Ingeniería Civil y Geología (UCG); Universidad Técnica Particular de Loja; San Cayetano Alto s/n 1101608 Loja Ecuador
3. LCRS, Faculty of Geography (FOG); University of Marburg; 35032 Marburg Germany
4. Department of Agronomy; University of Córdoba; Campus Rabanales, Edif. da Vinci 14071 Córdoba Spain
5. Department of Biological and Agricultural Engineering; University of Idaho; Moscow ID 83844-3006 USA