Vorapitirangsree, Veera, Patipat Jaipin, Sasitorn Vorapitirangsree, Watcharaphon Bumphenyoo, Wimol Kaewseeda, and Prissana Hanviriyapan. 2013. “Production System Trial of Longon Low Canopy Pruning Orchard in Chiang Rai Province”. Thai Agricultural Research Journal 31 (1):69-77. https://doi.org/10.14456/thaidoa-agres.2013.19.