Development of rice culture on aquifers in North Cameroon. An example of technology transfer.
The development of intensive rice cultivation in N. Cameroon since the introduction of the rice cultivation project by Sodecoton in 1975 is described in relation to the climatic and edaphic characteristics of the project area, the main elements of technology-transfer including social background and cultivation methods. A major handicap to the expansion of rice production in Cameroon is the problem of sufficient motivation of the farmers in the face of economically or nutritionally more attractive crops (cotton and maize, resp.). Another problem is the sustained supply of technology, machinery and crop chemicals. Herbicides, especially Avirosan (dimethametryn + piperophos) and Ronstar CE25 (oxadiazon) are used alternately to control Paspalum orbiculare, Digitaria horizontalis, Dactyloctenium aegyptium, Ageratum conyzoides and Tridax procumbens which had become resistant to the continued application of the same herbicide. The use of paraquat prior to rice planting is currently being studied.