Study on Efficient Heating Methods for Harvester to Prevent Secondary Infection of Red Perilla Bacterial Wilt

Abstract

Secondary bacterial wilt spread through a trimmer blade of a harvester has become a major issue in red perilla when crops are rotated in rice fields. To prevent infection, the trimmer blade must be heated above 90°C. Therefore, we considered an efficient method of sterilization in which the trimmer blade is heated.
A direct method for heating the trimmer blade is hindered by the blade action : the wires might be cut by the trimmer blade swing at high speed. The obstacles were overcome with a method of indirect heating achieved with a cover plate over the trimmer blade, which included a built-in micro-sheath heater that exceeds the 90-degree requirement.