Development of microbial consortia for the management of leaf blight disease of coconut

I. Johnson; R. Ramjegathesh; J. Sheela; N. Shoba; H. P. Maheshwarappa

doi:10.1556/038.52.2017.007

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Acta Phytopathologica et Entomologica Hungarica

Volume/Issue:: Volume 52: Issue 1

Development of microbial consortia for the management of leaf blight disease of coconut

Authors:

I. Johnson

I. Johnson Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore-641 003, India

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R. Ramjegathesh

R. Ramjegathesh Coconut Research Station, Coimbatore (Dt.)-642 101, India

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J. Sheela

J. Sheela Department of Vegetables, Horticultural College and Research Institute, Periyakulam, Theni, India

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N. Shoba

N. Shoba Coconut Research Station, Coimbatore (Dt.)-642 101, India

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H. P. Maheshwarappa

H. P. Maheshwarappa Project Co-ordinator (AICRP on Palms), ICAR-CPCRI, Kasaragod, Kerala, India

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Pages:: 1–14

Online Publication Date:: Jun 2017

Publication Date:: 01 Jun 2017

Article Category:: Journal Article

DOI:: https://doi.org/10.1556/038.52.2017.007

Keywords:: Coconut; Lasiodiplodia theobromae; microbial consortia; Pseudomonas; Bacillus; Trichoderma

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The leaf blight disease caused by Lasiodiplodia theobromae is an important foliar disease in coconut that results in a yield reduction of 10–24 per cent in Tamil Nadu, India. In the present study, five Trichoderma viride isolates, Pseudomonas fluorescens and Bacillus subtilis strains were isolated from the coconut rhizosphere and tested against L. theobromae. P. fluorescens Pf1, B. subtilis (Km1) and T. viride (TNAU) isolates were found highly effective against the leaf blight pathogen under in vitro conditions and hence, all the three antagonists were combined together to develop microbial consortia and tested against leaf blight disease under field conditions. Soil application of microbial consortia formulated using talc as a carrier material at 150 g (50 g each) and 300 g (100 g each) doses at different intervals (quarterly, half-yearly and annually) was evaluated for three years from 2011 to 2013. Among the treatments, the fungicide carbendazim was found to be the most effective against coconut leaf blight. Among the treatments with bioagents, soil application of microbial consortia @ 300 g+5 kg of farm yard manure at quarterly interval/palm/year was the best treatment which was followed by the treatment with TNAU Bacillus subtilis (Bs1) mixture in two locations. Confirmatory results were obtained in similar experiments carried out at two different locations during 2013–2014, too.

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Acta Phytopathologica et Entomologica Hungarica

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Jenő KONTSCHÁN Centre for Agricultural Research, Hungary

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Ágnes TURÓCI Centre for Agricultural Research, Hungary

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K SALÁNKI Centre for Agricultural Research, Hungary

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Z BOZSÓ Centre for Agricultural Research, Hungary

PE CHETVERIKOV Saint-Petersburg State University, Russia

JX CUI Henan Institute of Science and Technology, China

J FODOR Centre for Agricultural Research, Hungary

Z IMREI Centre for Agricultural Research, Hungary

BM KAYDAN Çukurova University, Turkey

L KISS University of Southern Queensland, Australia

V MARKÓ Hungarian University of Agriculture and Life Sciences, Hungary

MW NEGM Ibaraki University, Japan

L PALKOVICS Széchenyi István University, Hungary

M POGÁNY Centre for Agricultural Research, Hungary

D RÉDEI National Chung Hsing University, Taiwan

A TOLSTIKOV University of Tyumen, Russia

J VUTS Rothamsted Research, UK

GQ WANG Guangxi University, China

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Acta Phytopathologica et Entomologica Hungarica
Language	English
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