Reducción del uso y desarrollo de resistencia de plaguicidas en el cultivo de arroz y frijol en Colombia, Venezuela y Ecuador : Informe final proyecto FONTAGRO FTG-438/2005
Development of low input systems such as organic farming by optimising the use of legumes in a dry region of Nicaragua to strengthen soil fertility, yield, human nutrition and farm income : Use of legumes in low input systems ULLIS: Final report
Dinámica histórica de los derechos de agua en el Valle del Cauca, Colombia: un estudio de caso en el distrito de riego RUT = Historical Dynamics of water rights in the Cauca Valley, Colombia: a case study on the RUT irrigation district. Thesis (M.Sc…
Integration of Canavalia brasiliensis into the crop-livestock of the Nicaraguan hillsides : Environmental adaptation and nitrogen dynamics. Thesis (Doctor of Sciences)