Crop Choice and Infrastructure Accessibility in Tanzania : Subsistence Crops or Export Crops?

access to information agribusiness agricultural commodities agricultural development agricultural economics agricultural inputs agricultural production agricultural productivity agricultural products agricultural research agriculture bananas cash crops cassava cereals climate climate change coffee commercialization consumption cooperatives costs cotton crop production crop yield crops elasticities fao farmers farming farms food consumption food crops food security groundnuts infrastructure irrigation irrigation systems irrigation water land rights land use living standards maize natural resources oil palm poverty produce production costs reports rice roads rural areas rural population rural poverty seed seeds sesame single crop small farmers sorghum subsidies subsistence tea tobacco traffic training transport transport infrastructure transportation walking water availability wheat yields