Efficacy of Antibiotics and Biorational Pesticides against Bacterial Blight of Paddy

P.R. Thimmegowda; Arun Sataraddi; D.S. Ambika; P.S. Prasad and M. Chandrashekar

doi:https://doi.org/10.29321/MAJ.10.100149

Madras Agricultural Journal

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Efficacy of Antibiotics and Biorational Pesticides against Bacterial Blight of Paddy

Author: P.R. Thimmegowda, Arun Sataraddi, D.S. Ambika, P.S. Prasad and M. Chandrashekar,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 99, Issue: jul-sep,

DOI:https://doi.org/10.29321/MAJ.10.100149

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Abstract

In rice, streptocycline at 1000 ppm was effective against bacterial blight under in vitro evaluation, with maximum inhibition zone (25.0mm), followed by streptocycline + Copper sulphate 1000 ppm (24.33mm). Under field studies, streptocycline + copper oxychloride was found best with least per cent disease index. Highest grain yield returns were recorded in streptocycline + copper oxychloride treatment @ 0.025 % + 0.1 per cent followed by bactrinashak @ 0.04 and 0.03 per cent.

Keywords: Bacterial blight of rice, Xanthomonas oryzae pv. oryzae, management, antibiotics and biorational pesticides.

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