Yield Mapping of Transplanted and Broadcast Paddy Fields

Abstract

Yield mapping of rice paddy fields was attempted in accordance with increasing interest in recent development of precision agriculture. The maps were drawn for two 30a transplanted fields and one 63a broadcast field. The method consists of dead reckoning of combine position and velocity with a proximity switch, and grain flow monitoring by sensing impact on a load cell. Averaged cut widths were used as estimation. Little yield variability was observed in the transplanted fields, if the effect of experimental plots of varied chemical pest control was removed. The broadcast field showed an extreme example of yield variability, as a result of severe damage caused by pest and weed.