Yield Mapping Using Method of Measuring Yield Every Mesh (Part 1)

——Instrument of Yield Measuring Every Mesh——

Abstract

We developed a yield-measurement device by every mesh equipped with a measuring hopper placed in the internal surface of the grain tank of the head-feeding combine for yield mapping of various reaping methods with equal precision. We measured the mass of the whole hopper with an estimation error of 1.8% by using a pulling-type load cell and estimated the moisture content of the grain within 1% w.b. by using a moisture sensor. A farm test revealed that the error in the mass measurement was 2.0kg at the maximum with a 3.4% standard error, and that the standard error of the moisture content measurement was 2.9% w.b. for wheat and 3.2% w.b. for rough rice, and the standard error of the yield measurement was 5.5%.