Costs of producing high yielding rice varieties and traditional rice varieties in Suphan Buri, wet season 1970 and dry season 1971

The senior author"s interest has focused on the costs of producing HYV, while the junior author has investigated the productivity and distributive effects of growing HYV in the Suphan Area. The information presented in this paper is based upon a series of interviews with approximately one hundred and thirty farmers in six villages. Forty farmers were randomly selected from two villages in a deep water, broadcasted rice area of Amphoe Bang Pla Ma where floating rice is grown. Ninety farmers were randomly selected from four villages in a transplanted rice area of Amphoe Sri Prachan where both traditional and HYV are grown.