Farmer reluctance to grow subsidiary crops in the Mahaweli system H during yala 1980 [Sri Lanka]

agriculteur agricultores agricultura comercial agriculture commerciale asia asie behaviour cash crops commercial farming commercialisation comportamiento comportement constraints contrainte cultivation cultivo cultivos comerciales culture de rapport decision making documentation facteur de production farmers farming systems flux d'information hired labour incentives incentivos incitation information flow information science labour mano de obra asalariada marketing mercadeo methode methods motivation occupations ocupaciones pratique culturale production factors riesgo risk risque science de l'information sri lanka toma de decisiones trabajo travail