Institutional models for participatory RandD for improving technology design and adoption in the hillsides. Landuse in humid tropical hillsides of Central America : a case study of migrant farmers in the Atlantic Littoral area of Northern Honduras

agroforesteria agroforesterie agroforestry arroz bassin versant colonisation rurale cropping systems cultivation cultivo deforestation honduras land use mais maize migration oryza sativa phaseolus vulgaris pratique culturale production costs rice riz rural settlement sistemas de cultivo sloping land terre en pente terreno en declive utilisation des terres watersheds zea mays