Fruits et legumes en Afrique Occidentale

advisory officers arbre fruitier conservation des sols cultivo en terrazas cultural methods culture en terrasse educational institutions erosion control escarda especies essential oil crops extension activities fertilisation fertilizer application fitomejoramiento fruit crops fruit trees fruits frutales frutas gardens grain legumes hortalizas hortalizas (plantas) horticultura horticulture irrigation legume legumes leguminosas leguminosas de grano mode de culture pests of plants plant breeding plant diseases plant production plant protection plantas de especia plantation planting protection des plantes racine repiquage riego roots site preparation soil conservation species spice crops teaching materials teaching methods terrace cropping training transplanting trasplante vegetable crops vegetables weed control