Studies on Fusarium oxysporum f.sp. radicis cucumerinum Causing Root and Stem rot of Cucumber and in vitro Assay for management
Loading...
Date
2018
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
MPUAT, Udaipur
Abstract
“Studies on Fusarium oxysporum f.sp.radicis cucumerinum causing
root and stem rot of cucumber and in vitro assay for management”
Kalpana Yadav* Dr. N.L.Meena The present study was undertaken in cucumber stem and root rot disease
caused by Fusarium oxysporum f.sp.radicis cucumerinum (FORC) leading to rotting
of stem, roots. The studies were aimed; Occurrence and pathogenecity of Fusarium
oxysporum f.sp. radicis cucumerinum in field and polyhouse condition; cultural,
morphological and pathological variability of the pathogen in different isolates and
develop management strategy through fungicides, bio-agents and plant extracts.
The disease samples of cucumber were collected from severely infected
farmer’s field and polyhouse of Udaipur districts at different localities. Maximum
disease incidence was recorded in Dabok, Udaipur and minimum recorded in
polyhouse, RCA.
In vitro cultural and morphological studies revealed that maximum colony
diameter in FORC 5, and maximum size of macro and micro conidia measured in
FORC 4. In case of pathogenic variability, disease incidence was found maximum in
FORC 4 (80.00%) as virulent isolate and minimum (17.50%) in FORC 2 as least
virulent isolate.
Among management strategy, Carbendazim at 500 and 750 ppm concentration
was found most effective against the pathogen. Azadirachta indica was also found
effective at 30% concentration to reduce the growth of the pathogen. Trichoderma
viride showed maximum suppression the pathogen by dual culture technique.
* M.Sc. Scholar, Department of Plant Pathology, RCA, Udaipur
** Major Advisor, Assit. Prof., Department of Plant Pathology, RCA, Udaipur
Description
Studies on Fusarium oxysporum f.sp.radicis cucumerinum causing root and stem rot of cucumber and in vitro assay for management
Keywords
null
Citation
Yadav, K. and Meena N.L.