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STUDIES ON EPIDEMIOLOGY AND MANAGEMENT OF STEM ROT DISEASE OF CARNATION

KrishiKosh

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Title STUDIES ON EPIDEMIOLOGY AND MANAGEMENT OF STEM ROT DISEASE OF CARNATION
 
Creator SHARMA, SUSHMA
 
Contributor CHANDEL, SUNITA
 
Subject economics, biological phenomena, resins, productivity, technological changes, exhibitions, developmental stages, marketing, biological development, selection
 
Description ABSTRACT
The present investigation entitled “Studies on epidemiology and management of stem rot
disease of carnation.” was conducted in the laboratories and experimental farm of the Department of
Mycology and Plant Pathology and also at the Department of Floriculture and Landscaping. During
the survey of the disease, 11.2-31.5 per cent incidence of stem rot was recorded. Under
epidemiological studies, high temperature 32.50°C and high soil moisture 23.13% favourable for the
maximum disease incidence of stem rot i.e. 40.28 per cent. Among different fungicides tested in vitro
thiram was found most effective with 84.63 per cent average inhibition in mycelial growth of
pathogen Thiram was also effective in field condition in minimizing the disease incidence and
increasing the growth and flower parameters. Among different soil amendments Melia azedarach was
found to most effective with minimum disease incidence 13.62 per cent with increase in plant growth
characteristics. Among different crucifer crop residues, cauliflower and cabbage were found best and
most effective in minimizing disease incidence upto (22.28 and 24.25 %) with an increase of plant
growth and flower parameters. Among five species of Trichoderma tested in vitro, T. viride was
found most effective with 65.08 per cent inhibition in mycelial growth of the stem rot pathogen.
Among bacterial antagonists, B. subtilis was found most effective with 55.05 per cent mycelial
growth inhibition. Most potential antagonists further tested under field conditions which revealed that
T. viride was most effective in field condition and resulted into minimum disease incidence 17.33 per
cent with improved plant growth and flower parameters. Nine natural botanicals and two commercial
formulations of neem were evaluated under in vitro against the stem rot pathogen and among these
commercial formulation of Neemgold was most effective with 56.77 per cent average inhibition in
mycelial growth and among natural botanicals Adhatoda vasica and Melia azedarach were found
effective. Treatment combinations of Trichoderma viride and Melia azedarach were found most
efficacious with minimum disease incidence (6.00 %) and also recorded maximum increase of 82.32,
76.64, 3.79, 7.20 per cent in plant height, stem length, number of flowers per plant, flower size and
also recorded 131.0 less days to first flowering in comparison to control
 
Date 2017-02-16T07:19:54Z
2017-02-16T07:19:54Z
2011
 
Type Thesis
 
Identifier 47320
http://krishikosh.egranth.ac.in/handle/1/5810001199
 
Language en
 
Format application/pdf
 
Publisher UHF,NAUNI,SOLAN