Subsistence agriculture to produce cassava, plantains, cocoyams, yams, maize, ground- nuts, etc, mainly for home consumption, is the main activity on the plain. Small quantities of cocoa (for sale) and coffee (mainly for home consumption) are produced. There are smallholder cooperative associations at lloani and Mbongo villages which pro- duce palm oil , from two small Stork mills of 5t FFB per day capacity. The oi l is sold on the local market through the Catholic Mission at Mbonge. Members earn about 110 000 CFAF a year from palm oil . About 30 ha of plantation are maintained at each village. Because.