Asst. Prof. Dr. Warakorn Limbut and the team from TAB-CoE had been invited to give a special talk about the technology about the management of soil fertilizers and palm tree field entitled “Zinc field test kit”, research knowledge for increasing the rice product and quality of rice by Office of Agricultural Research Development cooperated with Department of Agricultural Extension and Agricultural Extension Scholars, Provincial Agricultural Office. The knowledge can be applied to improve and distribute to the Learning Center for Increasing Agricultural Product Production Efficiency on 27th March 2019, Krabi Royal Hotel, Krabi, Thailand.