Farming systems within Zanzibar Cash Crop Farming System Program

abonos agronomia agronomie agronomy ciencias forestales classification des terres commercialisation crops cultivation cultivo cultivos engrais experimentation exploitation agricole explotaciones agrarias farming systems farms fertilidad fertilite fertility fertilizers foresterie forestry formation ganado labour land land classification livestock marketing mercadeo plant protection plante de culture population rurale postharvest technology pratique culturale protection des plantes recherche research rural population socioeconomic organization tanzania tanzanie terre tierras trabajo training travail