Eleventh semi-annual report to the Food and Agricultural Organization of the United Nations in implementation of the project activity (SIL/76/008) in support of the Rice Research Station, Rokupr, Sierra Leone

aplicación de abonos cropping systems enfermedades de las plantas fertilisation fertilizer application maladie des plantes pest resistance plant diseases plantación plantation planting rendement rendimiento resistencia a las plagas résistance aux organismes nuisibles sistemas de cultivo système de culture variedades varieties variété yields