Journal of Biological Control

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Bioefficacy and Shelf Life of Conidial and Chlamydospore Formulations of Trichoderma harzianum Rifai


Affiliations
1 Project Directorate of Biological Control (ICAR), P. B. No. 2491, H. A. Farm Post, Hebbal, Bangalore 560 024, Karnataka, India
 

The conidia and chlamydospores of Trichoderma harzianum produced by solid state and liquid fermentation, respectively, were formulated as powder and tested for their comparative bioefficacy and shelf life. Both the propagules did not differ significantly in reducing ischolar_main rot incidence in chickpea caused by Rhizoctonia solani. Conidial formulation retained optimum amount of viable propagules (>106 cfu/g) even after 180 days of storage at room temperature but in chlamydospore formulation, viable propagules reduced to less than 106 by 150 days.

Keywords

Bioefficacy, Chlamydospores, Conidia, Formulation, Shelf Life, Trichoderma harzianum.
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  • Bioefficacy and Shelf Life of Conidial and Chlamydospore Formulations of Trichoderma harzianum Rifai

Abstract Views: 307  |  PDF Views: 284

Authors

R. D. Prasad
Project Directorate of Biological Control (ICAR), P. B. No. 2491, H. A. Farm Post, Hebbal, Bangalore 560 024, Karnataka, India
R. Rangeshwaran
Project Directorate of Biological Control (ICAR), P. B. No. 2491, H. A. Farm Post, Hebbal, Bangalore 560 024, Karnataka, India
C. P. Anuroop
Project Directorate of Biological Control (ICAR), P. B. No. 2491, H. A. Farm Post, Hebbal, Bangalore 560 024, Karnataka, India
P. R. Phanikumar
Project Directorate of Biological Control (ICAR), P. B. No. 2491, H. A. Farm Post, Hebbal, Bangalore 560 024, Karnataka, India

Abstract


The conidia and chlamydospores of Trichoderma harzianum produced by solid state and liquid fermentation, respectively, were formulated as powder and tested for their comparative bioefficacy and shelf life. Both the propagules did not differ significantly in reducing ischolar_main rot incidence in chickpea caused by Rhizoctonia solani. Conidial formulation retained optimum amount of viable propagules (>106 cfu/g) even after 180 days of storage at room temperature but in chlamydospore formulation, viable propagules reduced to less than 106 by 150 days.

Keywords


Bioefficacy, Chlamydospores, Conidia, Formulation, Shelf Life, Trichoderma harzianum.