Effectiveness of Trichoderma koningii Extract on Aspergillus Species Isolated from Rotting Tomato (Solanum lycopersicum Mill.)



  • Olusola L. Oyesola Department of Biological Sciences, Covenant University, Ota, Nigeria
  • Ayodele A. Sobowale Department of Botany, University of Ibadan, Nigeria
  • Olawole O. Obembe Department of Biological Sciences, Covenant University, Ota, Nigeria


Aspergillus spp, Pathogens, Biocontrol, Tomato, Growth inhibition, Trichoderma koningii


Pre and post-harvest losses caused by fungal pathogens have been a significant challenge to agriculture and the national economy. This study investigated the effect of Trichoderma koniigii extract on three Aspergillus spp (A. niger, A. nidulans, and A. flavus) isolated from rotting tomato. N-hexane and Ethyl acetate was used as extraction solvents while the growth inhibitory potential of the extract was tested at 1.0 g/mL, 2.5 g/mL, 5 g/mL, and 10 g/mL concentrations. The whole experiment was set-up in a completely randomized design (CRD). Data and observations were analyzed using ANOVA and LSD. The results revealed that the growth inhibitions differed
significantly from one fungus to the other. A. niger and A. flavus showed significant growth inhibition at 5 g/mL, and 10 g/mL concentrations (p ≤ 0.05, R2 = 0.76), while A. nidulans did not show inhibition at all the different concentrations. From the results, ethyl acetate with a high significant value (P = 0.0406 at 50%) might be a better solvent than n-hexane. The study suggests that T. koningii extract possesses active biocontrol property against pre and post-harvest pathogens of crops.


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How to Cite

Oyesola, O. L., Sobowale, A. A., & Obembe, O. O. (2020). Effectiveness of Trichoderma koningii Extract on Aspergillus Species Isolated from Rotting Tomato (Solanum lycopersicum Mill.): doi.org/10.26538/tjnpr/v4i11.19. Tropical Journal of Natural Product Research (TJNPR), 4(11), 961–965. Retrieved from https://tjnpr.org/index.php/home/article/view/963