Bioefficacy and Shelf Life of Conidial and Chlamydospore Formulations of <I>Trichoderma harzianum</I> Rifai

R. D. Prasad; R. Rangeshwaran; C. P. Anuroop; P. R. Phanikumar

doi:10.18311/jbc/2002/4124

Jump To References Section

Authors

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

DOI:

https://doi.org/10.18311/jbc/2002/4124

Keywords:

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

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 root 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.