Vegetable in cropping systems nutritional and medical value of vegetables: introducing vegetable cultivation and seed production in the small farmer's development programme [Nepal]

agricultural structure alimentos asia asie besoin nutritionnel cropping systems crops cultivation cultivo cultivos economic plants economic sectors empresas enterprises entreprise farm size farm structure foods hortalizas hortalizas (plantas) industria industria de semillas industrie industrie des semences industry legume methode methods necesidades de nutrientes nepal nutrition nutritional requirements petite entreprise plantas plante plante de culture plants pratique culturale production de semences produit alimentaire secondary sector secteur secondaire sector secundario seed industry seed production sistemas de cultivo structure agricole structure d'exploitation agricole vegetable crops vegetables