Assoc. Prof. Dr. Warin Inthana, lecturer of the Agricultural Science and Innovation Program, together with the Biology Production and Service Center team, Walailak University, participated in the farmer training sub-activity to develop young farmers to be Young Smart Farmers at the E-Co Inn Hotel, Muang District, Nakhon Si Thammarat Province on December 21, 2022, by describing the use of agricultural biomaterials to control plant diseases and eliminate pests. To reduce production costs and be safe from chemicals.