Aabed, S. et al. 2021. In vitro Evaluation of Antagonism between Trichoderma spp.and Rhizoctonia solani causing black scurf disease on potato. Yemeni Journal of Agriculture & Veterinary Sciences. 1, 1 (Mar. 2021). DOI:https://doi.org/10.70022/yjavs.v1i1.15.