AUTHOR(S)
Meesa Jan, Zahara Sultan, Abdul Hamid Wani and Mohd Yaqub Bhat*

ABSTRACT

ABSTRACT

Anexperimental investigation was carried out to evaluate the biocontrol efficacyof two Trichoderma species on pathogenic fungi isolated from therhizospheric soil. Experiments revealed the beneficial interactions between thetest biocontrol agents against the isolated pathogenic fungi. Two Trichodermaspecies viz. T. harzianum, and T. virens were assessed fortheir biological control efficiency against ten different pathogenic fungi viz.Alternaria alternata, Chaetomium cochliodes, Cladosporium cladosporoides,Colletotrichum fructicola, Curvularia lunata, Fusarium oxysporum, F.ventrichosum, F. proliferatum, F. solani and Mucor hiemalis. T.harzianum exhibited the highest mycelial growth inhibition against F.solani (71%), followed by C. cochliodes and C. lunata (70%), F.ventrichosum (69%), and C. fructicola (68%). Moderate inhibition wasrecorded against F. oxysporum, A. alternata, C. cladosporioides,and F. proliferatum (58–65%), while the lowest inhibition (44%) wasobserved against M. hiemalis. Similarly, T. virens showed maximummycelial growth inhibition against C. fructicola (80%), followed by F.oxysporum (75%), C. cochliodes and C. lunata (72%), and F.proliferatum (70%). Inhibition against F. solani, A. alternata,F. ventrichosum and C. cladosporoides ranged from 59–68%, whilethe lowest inhibition was observed against M. hiemalis (54%). The studyalso assessed parameters such as the time to colony contact, overgrowth, andplate coverage by the biocontrol agent, pathogen radial growth, resistance, andPakdaman’s Biological Control Index (PBCI). These attributes collectively also revealedthe significant biocontrol efficacy of T. virens and T. harzianumagainst the tested soil-borne fungal pathogens.

 

Keywords: Dual culture; confrontation; Trichoderma; growth inhibition; pathogenresistance

DOI
https://doi.org/10.57182/jbiopestic.18.2.146-155

PAGES: 146-155 | 3 VIEWS | 14 DOWNLOADS

DOWNLOAD FULL ARTICLE