Dr. Juan Ignacio Burneo
Universidad Técnica Particular de Loja
e-mail jiburneo [at] utpl.edu.ec
Universidad Técnica Particular de Loja
e-mail jiburneo [at] utpl.edu.ec
Universidad Pontificia Bolivariana Bucaramanga
e-mail angelica.muskus [at] upb.edu.co
Universidad de Cuenca
e-mail pablo.quichimbo [at] ucuenca.edu.ec
Professorship for Soil Science
University of Jena
e-mail alexander.tischer [at] uni-jena.de