The National Corn Specialist Training Course conducts the Participatory Technology Development (PTD) Field Day on November 25, 2022 in Brgy. San Felipe, Tantangan, South Cotabato.

The PTD area was established by the 25 participants from Luzon, Visayas, and Mindanao last August 19, 2022, and conducted five varietal trials. The CST participants showcased these trials and results of the PTD to the Farmers Field Schools (FFS) participants from two barangays in Tantangan and three barangays in Koronadal City.