[First technical meeting of research workers agronomists of the Ministry of Agriculture [cultivation of rice, proceedings, Guinea]]

arroz de secano arroz irrigado augmentation de rendement aumento del rendimiento cultivation cultivo engrais essai fertilidad del suelo fertilizers fitomejoramiento flooded rice irrigated rice irrigation mangrove mangrove swamps pantanos de mangle plant breeding plant protection pratique culturale protection des plantes pruebas riego riz aquatique riz de montagne soil fertility trials upland rice