Epidemic outbreak of apple blotch disease: epidemiology and management in Himachal Pradesh
251 / 246
Authors
-
V.S. THAKUR* NIRUPMA SHARMA
Abstract
Apple blotch complex caused by Marssonina and Alternaria sp. is an important disease manifested recently in all apple growing states of India. The disease appears in the form of dark brown blotch on the upper side of the leaf in the second week of June under humid weather conditions. The correlation analysis revealed that the prevalence of blotch disease was based on the physio-epidemiological conditions wherein leaf ageing followed by average temperature above 200C and 70 per cent relative humidity atleast continuously for 5-6 days, induce yellowing and defoliation process. The disease management with fungicide tested as preventive sprays against premature leaf fall of apple, Indofil M-45 (0.3%), Antracol (0.3%), Indofil Z- 78 (0.3%), Bavistin (0.05%), Kocide (0.3%), Tohfa (0.075%) and Copter (0.3%) provided hundred percent disease control with very good to excellent fruit finish.
Downloads
Issue
Section
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.