Border Effect on Ratoon Crop Yield in a Mechanized Rice Ratooning System

Yield loss of ratoon crops caused by the rolling damage to left stubble from mechanically harvesting main has been reported in previous studies. However, limited attention paid identify effect mechanical crop on yield a non-rolled zone (NRZ) crop. A two-year field experiment rice with two harvest methods (mechanical harvesting: MEH; manual MAH) was conducted whether there is border NRZ, and evaluate will compensate for On average, MEH reduced grain 17.6% compared MAH. The rolled (RZ) 66.1–70.3% lower than that MAH, which attributed panicle m?2, filling percentage, total dry weight, index. In contrast, NRZ 2.7–10.8% higher differences single row (R1), side (R2), middle (R3) MAH were 22.9%, 8.5%, ?10.1%, respectively, mainly explained spikelets regeneration rate. These results suggest during induced gain increased R1 R2 rather R3.