Final report as of December 1993 for TA no. 5414: decentralized participatory research for less favorable rice ecosystems and rice-wheat systems of Asia

arroz de secano asia asie cropping systems cultivo de temporal culture pluviale decentralization ecosistema ecosystems less favoured areas lowland oryza sativa rainfed farming recherche research riz pluvial sistemas de cultivo sostenibilidad sustainability tierras bajas triticum aestivum upland rice zonas desfavorecidas