(3)  The average fallow period for 50 households‘ fields was about 3.75 years. Almost all of the interviewed households felt that the fallow period has been consistently shortening and productivity of the fields has been declining. Some of the households indicated that they used to keep the field fallow for about six years. The present average of three years fallow period is too short for the vegetation regeneration to occur and for the soil fertility to regenerate. Indeed, the three years fallow is just an average, and some household‘s left their fields fallow for just two years. To cope with these difficulties people have engaged in the use of chemical fertilizer.