MANAGEMENT OF CUCUMBER WILT USING THE POTENTIAL OF NATIVE BIOCONTROL AGENTS

GURVEER SINGH  BRAR; NARINDER  SINGH; DALJEET  SINGH BUTTAR; AJAY KUMAR  CHOUDHARY

doi:10.56093/ijas.v95i9.150802

Authors

GURVEER SINGH BRAR Punjab Agricultural University, Ludhiana-141 004
NARINDER SINGH Punjab Agricultural University, Ludhiana-141 004
DALJEET SINGH BUTTAR Punjab Agricultural University, Ludhiana-141 004
AJAY KUMAR CHOUDHARY Punjab Agricultural University, Ludhiana-141 004

https://doi.org/10.56093/ijas.v95i9.150802

Keywords:

Cucumber wilt, Fusarium oxysporum f.sp. cucumerinum, Pseudomonas fluorescens, Trichoderma asperellum

Abstract

Cucumber wilt is a serious disease in cucumber cultivation which is caused by Fusarium oxysporum f. sp. cucumerinum (FOC). Taking into account the importance of the disease, current study was undertaken for the evaluation of the native potent isolates of Pseudomonas and Trichoderma spp. against FOC. Among all the Pseudomonas isolates Pf 6 showed maximum inhibition in dual culture (13.30 mm) assays against FOC. Similarly, in biochemical analysis, Pf 6 showed the highest chitinase activity and siderophore production i.e. 11.56 unit/ml and 32.17mm, respectively. Likewise, Th d isolate emerged as the most effective BCA out of various Trichoderma spp. isolates in the in vitro. The bio–efficacy bio formulations of P. fluorescens (Pf 6) and T. asperellum (Th d) were evaluated during 2020-2021 and 2021-2022 at the experimental area of Deptt. of Plant Pathology, Punjab Agricultural University, Ludhiana. Among all the treatments, Pf 6 as seed + soil treatment showed minimum disease incidence (10.0% and 13.33%) along with enhanced plant growth and yield. Therefore, based on our findings P. fluorescens (Pf 6) is an effective biocontrol agent and proved as an alternative approach for the effective management wilt of cucumber.

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Author Biographies

GURVEER SINGH BRAR, Punjab Agricultural University, Ludhiana-141 004

Department of Plant Pathology, Ph.D Scholar
NARINDER SINGH, Punjab Agricultural University, Ludhiana-141 004

Department of Plant pathology, Senior Plant Pathologist-Cum-Retd. Head
DALJEET SINGH BUTTAR, Punjab Agricultural University, Ludhiana-141 004

Plant Pathology, Principal Plant Pathologist
AJAY KUMAR CHOUDHARY, Punjab Agricultural University, Ludhiana-141 004

School of Organic Farming, Plant Pathologist

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