Annals of Plant Protection Sciences
Year : 2021, Volume : 29, Issue : 3
First page : ( 236) Last page : ( 240)
Print ISSN : 0971-3573. Online ISSN : 0974-0163.
Article DOI : 10.5958/0974-0163.2021.00051.3

Bio-efficacy of Pochonia chlamydosporia against Root-knot Nematode (Meloidogyne incognita) infecting Cucumber

Jothi G.*, Swarnakumari N.

Department of Nematology, Tamil Nadu Agricultural University, Coimbatore – 641 003 (Tamil Nadu), India

*jothipugal@yahoo.co.in

Online published on 12 November, 2021.

Abstract

The results revealed that all the treated plots with bioagents and chemical significantly increased the plant growth parameters and reduced root knot nematodes multiplication over untreated check. Pochonia chlamydosporia @ 6 kg/ac was found to be effective in controlling the nematodes and also increase in yield by 78.8% over control which was on par with 8 kg/ac. Vermicompost and Farmyard manure (FYM) were selected as the base medium and the bio control agents were tested for the growth and proliferation in vermicompost and Farmyard manure. Comparatively significant growth and proliferation was observed in vermicompost when compared to FYM. The Pochonia. chlamydosporia colonized vermicompost better than FYM and also the ratio 1:2 recorded the maximum colonization on the 10^th day and there was decease on the 15^th day. Whereas Purpureocillium lilacinum recorded the maximum colonization in 1:1 ratio on 5^th day and there was a decease on 10^th day. Application of the bioagent enriched vermicompost significantly increased the yield of the crop. The data on the root colonization of the bioagent and its parasitization of the nematode eggs indicate that the strain of P. chlamydosporia is rhizosphere competent.

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Keywords

Bio-efficacy, Meloidogyne incognita, Pochonia chlamydosporia.

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