Variability in parasitic ability of Trichoderma isolates against sclerotia of Sclerotium rolfsii associated with chickpea

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Authors

  • P. Nagamani
     Regional Agricultural Research Station, Tirupati - 517 502, Andhra Pradesh ,IN
  • Someshwar Bhagat
     NRRI-Central Rainfed Upland Rice Research Station, Hazaribagh, Jarkhand ,IN
  • M. K. Biswas
     Department of Plant Protection, Palli siksha Bavana, Viswava Bharati, Bolpur – 731235, West Bengal ,IN
  • K. Viswanath
     Regional Agricultural Research Station, Tirupati - 517 502, Andhra Pradesh ,IN

DOI:

https://doi.org/10.18311/jbc/2017/15898

Keywords:

Chickpea, Competitive parasitic ability, Trichoderma spp
Biocontrol

Abstract

Parasitic ability of Trichoderma isolates was tested against Sclerotium rolfsii in two types of soils viz., natural and sterilized soils to assess the ecological adaptability of Trichoderma spp. to a soil. The isolate ATPU 1 (EID50 of 2.1 mycelia/gm of soil) was most effective in parasitization of sclerotia of S. rolfsii when used as live bait, under the natural soil of, when mycelial form of inoculum was used. This isolate was closely followed by KNO 2 and ATPP 6 which had the same EID50 of 2.2 mycelia/gm of soil, the next best isolates were KNP 3 and ATPPE 6 with EID50 of 2.3 mycelia/gm of soil. The isolate KT 6 (EID50 5.7) was rated as poorest competitive colonizer, requiring comparatively highest inoculum level to colonize 50% sclerotia of S. rolfsii . However the conidial form of inoculum from KNK1 (EID50 value of 2.2 conidia/gm of soil) was most aggressive isolate requiring lowest inoculum dose for 50% colonization of sclerotia of S. rolfsii.

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Author Biography

P. Nagamani, Regional Agricultural Research Station, Tirupati - 517 502, Andhra Pradesh

Department of Plant Pathology

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Published

2018-01-11

How to Cite

Nagamani, P., Bhagat, S., Biswas, M. K., & Viswanath, K. (2018). Variability in parasitic ability of <i>Trichoderma</i> isolates against sclerotia of <i>Sclerotium rolfsii</i> associated with chickpea. Journal of Biological Control, 31(3), 181–188. https://doi.org/10.18311/jbc/2017/15898

Issue

Volume 31, Issue 3, September 2017

Section

Research Articles
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