Evolution of disease and potential biocontrol activity of Trichoderma SP. against Rhizoctonia solani on potato

Authors

  • Matiar Rahman Centro de Pesquisa de Culturas de Tubérculos
  • M. Ayub Ali Universidade Agrícola de Bangladesh
  • Tapan Kumar Dey Instituto Indiano de Pesquisa de Legumes
  • M.M. Islam Universidade de Putra Malásia/Instituto Central de Pesquisa de Culturas de Tubérculos
  • Laila Naher Universidade Malásia Kelantan
  • Ahmad Ismail Universidade Putra Malásia

Keywords:

Black scurf, potato, Rhizoctonia solani, Trichoderma spp, stem canker

Abstract

Black scurf and stem canker disease cause by the fungal pathogen of Rhizoctonia solani and it is an economical important disease of potatoes in Bangladesh and throughout the world. This study evaluated the black scurf and stem canker disease development in potato and antagonistic activity of Trichoderma spp. against R. solani. The artificial infections were carried out using the inoculums of R. solani. The treatments (%inoculum) were: T1 (0% inoculum), T2 (5% inoculum), T3 (10% inoculum), T4 (20% inoculum), T5 (50% inoculum), and T6 (100% inoculum). The infection of stem canker and black scurf on progeny tubers increased with increase in inoculum levels. The highest disease incidence and severity was found in T6 (100% inocula). T6 showed the maximum black scurf infected tubers (russet, deformed and sclerotia). The lowest germination percentage, plant height and tuber yield were also obtained in the same treatment (100% inocula). Trichoderma spp reduced the growth of R. solani and the highest growth suppression was noted in isolate TM12. According to antagonistic activity, Trichoderma spp. reduced the growth of R. solani but was not able to stop the pathogen development. This finding showed management of this disease or R. solani invasion requires an integrated approach compared to Trichoderma single approach.

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Published

2014-07-17

How to Cite

RAHMAN, M., ALI, M.A., DEY, T.K., ISLAM, M., NAHER, L. and ISMAIL, A., 2014. Evolution of disease and potential biocontrol activity of Trichoderma SP. against Rhizoctonia solani on potato . Bioscience Journal [online], vol. 30, no. 4, pp. 1108–1117. [Accessed25 May 2022]. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/23177.

Issue

Section

Agricultural Sciences