Elufisan, T.S., Idowu, A.B., Adesuyi, A.A. and Amadi, C.P. 2026. On-farm Evaluation and Economic Implication of Neem (Azadirachta indica) and Siam Weed (Chromolaena odorata) Leaves Powder in the Management of Plant-Parasitic Nematodes Associated with Yam (Dioscorea spp.). Moor Journal of Agricultural Research. 26, 2 (Jul. 2026), 131–140.