Factors affecting survival potential of Gliocladium virens in soil
119 / 83
Authors
-
D.K. SAHA and SITANSU PAN
Department of Plant Pathology, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur 741 252
Keywords:
Gliocladium virens, survival, soil pH, soil, moisture, temperature, colony forming unit (CFU)Abstract
A highly antagonistic isolate of Gliocladium virens (15 GV 1 , B. No. 4359, IARI) was studied in respect of its survival ability in soils of three different pH (5.6, 7.0 and 8.0). In red laterite soil of Purulia (pH 5.6) except in air dry soil and incubation temperature at 40°C, population as a function of incubation period increased upto 21 days irrespective of soil moisture and incubation temperature and declined thereafter. "The rate of decrease was more affected by moisture condition of the soil than that of temperature. The rate of decrease in population of the antagonist was very sharp in soil with 25% moisture and increase in population was more in soil with 50% moisture. The population irrespective of the pH of soils disappeared earlier within 30-60 days specially in air dry soil at 30°C while in soils of other moisture levels, the survival of spore was longer (Ca 105-150 days). In air dry soil at pH 8.0 the population began to cut down after 15 days while in other moisture levels after 21 days. In general, 40°C appeared lethal for survival of the antagonist in soils of three different pH regardless of the moisture levels of soil.
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.