Intercropping coconut lands with minor export crops [coffee, cocoa, pepper, pastures, Kurunegala District, Sri Lanka]

agronomia agronomie agronomy cocos nucifera cultivo intercalado culture intercalaire desarrollo rural extension extension activities farm area intercropping pastizales pastures piper nigrum plant production rural development subsidies subsidios subvention surface d'exploitation theobroma cacao vulgarisation agricole