Prediction equations for header losses of combine harvesters when harvesting Thai Hom Mali rice

Abstract

The objective of this study was to predict header losses of a combine harvester when harvesting Thai Hom Mali rice.The results of the study indicate that grain moisture content (M), reel index (RI), cutter bar speed (V), service life of cutterbar(Y), tine spacing (R), tine clearance over cutter bar (C), stem length (H), product of M and Y (M*Y), product of M and V (M*V), product of RI and R (RI*R), product of V and C (V*C), product of V and H (V*H), V2 and RI2 were the major parameters affecting the losses. The prediction equations had R2 = 0.75. The average percentage header losses given by the estimation equation differed from the measurement by only 0.25.

Keywords

• rice combine harvester
• header loss
• prediction equations