@article{DANIA_2019, title={Bioefficacy of Trichoderma species against important fungal pathogens causing post-harvest rot in sweet potato (Ipomoea batatas (L.) Lam): Bioefficacy of Trichoderma metabolites of sweetpotato}, volume={17}, url={https://banglajol.info/index.php/JBAU/article/view/44604}, abstractNote={<p>Tuber rot disease constitutes a serious threat to sweetpotato production worldwide, causing economic losses to farmers.  This study evaluated an eco-friendly approach using four biological control agents, <em>Trichoderma viride, T. harzianum, T. hamatum</em> and <em>T. pseudokoningii</em> for the management of post-harvest tuber rot disease of sweetpotato. Field surveys for infected tuber samples were conducted four across major sweetpotato states in Nigeria. Rot severity in inoculated tubers was evaluated over a storage period of four months and <em>Trichoderma</em> species isolated from the rhizosphere were bioassayed for the production of metabolites to evaluate the mechanism of antibiotic production for the control of rot pathogens using Gas Chromatography-Mass Spectroscopy<em>.</em> A total of 24 metabolites were produced by the <em>Trichoderma</em> species and the abundances were species dependent. <em>Trichoderma</em> species significantly (p<0.05) inhibited rot in treated tubers at 4 months after storage. However, <em>T. harzianum</em> was most effective, reducing mycelia growth of the rot pathogens by 54.6-77.3% <em>in vitro</em> and 47.2-68.8% reduction of rot incidence <em>in vivo</em>. The efficacy of <em>Trichoderma</em> species used in this study recommends their use as alternative therapy to synthetic fungicides in the management of post-harvest rot in sweetpotato.</p> <p><!--StartFragment --></p> <p><span style="font-size: 9px;"><strong><span style="font-family: ’Times New Roman’, Italic; color: #000000;">J Bangladesh Agril Univ 17(4): 446–453, 2019</span></strong></span></p>}, number={4}, journal={Journal of the Bangladesh Agricultural University}, author={DANIA, Victor Ohileobo}, year={2019}, month={Dec.}, pages={446–453} }