INNOVATIVE METHODS FOR MANAGEMENT OF BUCKEYE ROT OF TOMATO (Solanum lycopersicum L.)
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Date
2017-09
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UHF,NAUNI
Abstract
ABSTRACT
The present investigations were conducted in the laboratories and experimental farm
of the Department of Plant Pathology during 2016 and 2017. During the surveys, 25 to 66 per
cent incidence of buckeye rot disease was recorded in Solan and Sirmaur districts of
Himachal Pradesh. In pathogenicity tests, incubation period of 120 h was observed in pinprick
method whereas it was 168 h in surface inoculation method. Nine different abiotic
resistance inducers were evaluated against the disease under field conditions, among which β-
aminobutyric acid (2 mM) was found most effective with 85.66 per cent disease reduction
and fruit yield of 7.02 kg/plot followed by potassium chloride (100 mM). Among fungicides
evaluated under in vitro conditions, fungicides viz., Equation Pro, Sectin, Curzate M-8,
Ridomil Gold and Cabrio Top were found most effective and significantly superior among all
the treatments with complete mycelial growth inhibition. Under field conditions, foliar spray
of Sectin was found most effective with the disease reduction of 75.20 per cent and fruit yield
of 15.89 kg/plot followed by Equation Pro and Cabrio Top. Out of five aqueous biopesticides
evaluated under in vitro conditions, Eucayptus tereticornis was found most effective with
51.48 per cent of mycelial inhibition followed by Artemisia vulgaris (48.52%). Among five
cow urine based biopesticides evaluated under in vitro conditions, Eucayptus tereticornis was
found most effective with 71.89 per cent of mycelial inhibition followed by Artemisia
vulgaris (68.74%). Out of the six antagonists tested under in vitro conditions, Trichoderma
virens resulted in maximum mycelial growth inhibition (77.67%) of the test pathogen.
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