نتایج جستجو برای: sheath blight disease
تعداد نتایج: 1508479 فیلتر نتایج به سال:
Rhizoctonia solani is a soil-borne fungus causing sheath blight. In consistent with its necrotrophic life style, no rice cultivars fully resistant to R. solani are known, and agrochemical plant defense activators used for rice blast, which upregulate a phytohormonal salicylic acid (SA)-dependent pathway, are ineffective towards this pathogen. As a result of the unavailability of genetics, the i...
Sheath blight is one of the most important fungal rice diseases worldwide as well in Indonesia, caused by Rhizoctonia solani Kuhn. Yield losses sheath disease tropics reached 6%. This research was conducted survey technique to measure incidence and severity on plants 13 (thirteen) locations representing 12 (twelve) districts Northern Sumatra, Indonesia. Variable values were found surveyed locat...
ABSTRACT The objective of this study was to determine the effect of silicon (Si) and rice growth stages on tissue susceptibility to sheath blight (Rhizoctonia solani Kühn) under controlled conditions. Rice plants (cv. Rio Formoso) were grown in pots containing low-Si soil amended with Si at 0, 0.48, 0.96, 1.44, and 1.92 g pot(-1) and inoculated with R. solani at the following days after emergen...
Rhizoctonia solani Kuhn. is a fungal pathogen that causes sheath blight in rice plants. Sheath disease can reduce production for the people of Indonesia. To prevent blight, fungicides are used. The continuous use synthetic with inappropriate doses have negative impact, so it necessary to look alternatives vegetable fungicides, one which clove leaf (Syzygium aromaticum L.). aim this study was de...
As the usage of fungicides catapulted with the onward march of the dial hour, fungicidal resistance by the pathogens emerged as a new constraint. This amalgamated with the growing demand by the farmers for crop protection agents with low use rates, a benign environmental profile and a low toxicity to human and wild life, further gave an impetus to the search of new molecule of fungicides with n...
In the course of screening against Pellicularia sasakii, a fermentation broth of E327, a species of Streptomyces, was found to be effective against rice sheath blight disease. The active substances resembled the bleomycin group by thin-layer chromatography and were purified by methods reported for these antibiotics1}, using activated charcoal instead of alumina. Five antibiotics were separated ...
ABSTRACT The effect of elevated atmospheric CO(2) concentration on rice blast and sheath blight disease severity was studied in the field in northern Japan for 3 years. With free-air CO(2) enrichment (FACE), rice plants were grown in ambient and elevated ( approximately 200 to 280 mumol mol(-1) above ambient) CO(2) concentrations, and were artificially inoculated with consist of Magnaporthe ory...
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