Comparative antagonistic potential of some biocontrol agents against sheath blight of rice


297 / 162

Authors

  • ASHRAF All KHAN and A.P. SINHA

Keywords:

Sheath blight, bioagent, Trichoderma harzianum, T. virens, Contaf

Abstract

The present investigation was undertaken to evaluate biocontrol potential of isolates of Trichoderma spp. and some commercial formulations of biocontrol agents against Rhizoctonia solani causing sheath blight of rice. Maximum reduction in disease severity (70.57%) and incidence (38.25%) were observed with foliar sprays of Contaf. Among bioagents, foliar sprays with T.harzianum (a rice leaf isolate) was found most effective in reducing sheath blight (44.35-52.37%) and increasing grain yield (20.25-23.13%) and 1000 grain weight (6.36.7.35%). T.virens (rice rhizosphere isolate) was found next in order of. effectivity against the disease showing 38.27-43.03 and 11.70-21.69% reduction in disease severity and incidence, respectively. Reduction in sheath blight severity with Sanjeevni and Pant Bioagent 3 were not significant by difference in their efficacy.

Downloads

Issue

Vol. 58 No. 1 (2005): Indian Phytopathology

Section

Research Articles

License

For Authors

As soon as an article is accepted for publication, authors are requested to assign copyright of the article (or to grant exclusive publication and dissemination rights) to the publisher (Indian Phytopathlogical Society). This will ensure the widest possible protection and dissemination of information.

For Readers

While the advice and information in this journal is believed to be true and accurate at the date of its publication, the authors, the editors, nor the publisher can accept any legal responsibility for any errors or omissions that may have been made. The publisher makes no warranty, express or implied, with respect to the material contained herein.

All articles published in this journal are protected by copyright, which covers the exclusive rights to reproduce and distribute the article (e.g., as offprints), as well as all translation rights. No material published in this journal may be reproduced photographically or stored on microfilm, in electronic data bases, on video disks, etc., without first obtaining written permission from the publisher. The use of general descriptive names, trade names, trademarks, etc. in this publication, even if not specifically identified, implies that these names are protected by the relevant laws and regulations.

How to Cite

and A.P. SINHA, A. A. K. (2005). Comparative antagonistic potential of some biocontrol agents against sheath blight of rice. Indian Phytopathology, 58(1), 41-45. https://epubs.icar.org.in/index.php/IPPJ/article/view/17435