Antagonistic and acaricidal activity of actinomycetes against pathogens and red spider mite of tea plantations

Authors

  • R. JAYANTHI*, P. NEPOLEAN, J. MAREESWARAN, B. SURESH KUMAR, T. KUBERAN and B. RADHAKRISHNAN

Keywords:

Antagonistic, acaricidal, biocontrol, red spider mite

Abstract

The biocontrol efficacy of some of the actinomycetes collected from different tea growing soils of south India was attempted. Ten potential actinomycetes isolates viz., AAS2, AAS5, AAS6, AAS7, AAS15, APSA1, APSA4, APSA5 and APSA6 collected from The Anamallais and one isolate (CAS4) from The Nilgiris were screened for their antagonistic potential against tea pathogens and acaricidal activity against red spider mite under in vitro conditions. Maximum growth inhibition was recorded by CAS4 (100%) and APSA1 (82.1%) against foliar pathogens such as Pestalotiopsis theae. APSA1 cell free culture filtrate showed highest inhibitory effect (85.3%) against Glomerella cingulata followed by CAS4 (65.4%) on Cylindrocladium sp. APSA1 and CAS4 showed maximum response against stem pathogens like Hypoxylon serpens and Macrophoma sp. (80.3%), respectively. The growth of root pathogen, Xylaria sp. was completely controlled by AAS7 and APSA4. Three isolates of actinomycetes inhibited higher mortality rate of Red spider mites (RSM) where APSA1 (100%) recorded total mortality followed by AAS7 (94.0%) and APSA6 (92.0%).

Downloads

Issue

Vol. 69 No. 2 (2016): 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

T. KUBERAN and B. RADHAKRISHNAN, R. J. P. N. J. M. B. S. K. (2016). Antagonistic and acaricidal activity of actinomycetes against pathogens and red spider mite of tea plantations. Indian Phytopathology, 69(2), 162-168. http://epubs.icar.org.in/ejournal/index.php/IPPJ/article/view/58375