Wilaiporn, S. , N Nan, T. , Cheungaksorn, C. and Promma, C. 2018. Testing of Maize Nakhon Sawan 3 Variety Planting in Nan and Chiang Mai Provinces. Thai Agricultural Research Journal. 36, 2 (Oct. 2018), 163–172. DOI:https://doi.org/10.14456/thaidoa-agres.2018.15.