Management of sheath rot of rice caused by sarocladium oryzae (sawada) gams and hawksworth
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Date
2007
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Publisher
CCSHAU
Abstract
Sheath rot of rice caused by Sarocladium oryzae (Sawada)
Gams and Hawksworth considered to be minor disease has become
destructive and widely damaging in the recent years. The studies carried
out on various aspect of disease revealed S. oryzae was frequently
isolated from cultivar Jaya while Fusarium moniliforme was frequently
isolated from PR-106 and HKR 126. Carbendazim was highly effective in
inhibiting the fungal growth with EC50 value of 2.4 ppm a.i. closely
followed by Propiconazole with EC50 value of 5.0 ppm a.i. Neemgold was
found highly effective in inhibiting the fungal growth with EC50 value of
6.3 ppm a.i. closely followed by Achook with EC50 value 12.6 ppm a.i.
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Combination of propiconazole and Achook was found most effective in
reducing disease incidence and increasing grain yield. In terms of
benefit: cost ratio, fungitoxicant alone followed by Achook in combination
of either of the fungitoxicants (propiconazole or carbendazim) was better
over all treatments. Among non conventional chemicals, zinc sulphate
proved to be the most effective in reducing disease incidence and
increasing grain yield. Out of the 123 genotypes/ cultivars screened,
only 9, 1 and 6 were found highly resistant, resistant and moderately
resistant to sheath rot respectively.
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Keywords
Fats, Animal husbandry, Livestock, Oils, Adulteration, Lipids, Plant oils, Sampling, Animal tissues, Milk