Abstract: The performance of the rice planting machine was investigated field conditions to optimize the design and operating parameters for rice planting. The effect of operational speed of the disc, and shape of the entry of plant spacing (coefficient of variation) then crank mechanism put the plant and pushing downward direction. Optimization of the regression equations incorporating speed of the disc and operating vacuum pressure through iteration further revealed that a disc, operating at speeds from 0.34 to 0.44 m/s, yielded similar performance. Based on the optimized operational parameter, performance indices of the rice planting machine were determined under field condition by measuring the distribution of rice plants spacing.
Keywords: Rice planting device,seed metering device, chain drive system.