Boonpradub, Somchai. “Effect of Weed Competition on Growth and Yield of Blackgram (Vigna mungo L.)”. Thai Agricultural Research Journal 4, no. 2 (May 1, 1986): 128–133. accessed October 1, 2026. https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/245179.