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Biocontrol potential of three novel Trichoderma strains: isolation, evaluation and formulation
A K Mukherjee1,2, A Sampath Kumar1, S Kranthi1
1Central Institute for Cotton Research, PB 2, Shankar Nagar PO, Nagpur, 440010, Maharashtra, India.
3 Biotech
|March 22, 2017
Summary
Three novel Trichoderma strains were isolated and tested for biocontrol of cotton seedling disease. The Trichoderma harzianum strain CICR-G showed the highest efficacy and commercial potential due to its robust conidiation.
Area of Science:
- Agricultural Science
- Mycology
- Plant Pathology
Background:
- Cotton seedlings are susceptible to Sclerotium delphinii, causing significant crop losses.
- Biological control agents offer a sustainable alternative to chemical treatments for plant diseases.
Purpose of the Study:
- To isolate and characterize novel Trichoderma strains for biocontrol.
- To evaluate the efficacy of Trichoderma harzianum CICR-G against Sclerotium delphinii in cotton.
Main Methods:
- Isolation of Trichoderma strains from wild mushroom and tree bark.
- In vitro and in vivo evaluation of biocontrol potential against Sclerotium delphinii.
- Formulation of the most effective isolate into a talcum-based product.
Main Results:
- Three novel Trichoderma strains (two T. harzianum, one T. atroviride) were identified.
- T. harzianum strain CICR-G demonstrated superior disease suppression against S. delphinii.
- The talc-based formulation of T. harzianum CICR-G showed high efficacy in non-sterile soil.
Conclusions:
- Trichoderma harzianum CICR-G is a promising biocontrol agent for managing Sclerotium delphinii in cotton.
- The isolate's ability to conidiate under adverse conditions enhances its commercial viability.
- Novel Trichoderma strains can be effectively utilized for sustainable agricultural practices.
