Socio-economic and ecological study of pesticides use in cotton, Chongwe, Zambia

agriculteur agricultores agricultura de subsistencia agriculture de subsistance cambio estructural cash crops changement structurel control de plagas control methods coton cotton cultivos comerciales culture de rapport economic environment farm results farmers gossypium lutte antiravageur opinion publique pest control pesticide pesticides pests of plants petite exploitation agricole plagas de plantas plaguicidas plant production public opinion ravageur des plantes small farms structural change subsistence farming use value valeur d'utilisation valor de uso zambia zambie