Efficacy of Fluazinam and Iprodione+Propineb in the Suppression of Diaporthe phaseolorum, Colletorichum truncatun and Cercospora kikuchii, the Causal Agents of Seed Decay in Soybean
Seed decay of soybean caused by Diaporthe phaseolorum, Colletotrichum truncatum, and Cercospora kikuchii is a serious disease when soybean is harvested under warm and wet weather conditions. Benomyl has been used for controlling the disease, however, benomyl application may be limited due to common...
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Veröffentlicht in: | The plant pathology journal 2002, 18(4), , pp.216-220 |
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Sprache: | kor |
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Zusammenfassung: | Seed decay of soybean caused by Diaporthe phaseolorum,
Colletotrichum truncatum, and Cercospora kikuchii is a
serious disease when soybean is harvested under warm
and wet weather conditions. Benomyl has been used for
controlling the disease, however, benomyl application
may be limited due to common occurrence of resistance.
The efficacy of 21 fungicides against the pathogens was
evaluated in vitro. Among the fungicides tested, benomyl,
carbendazim, fluazinam, iprodione+propineb, thiophanate-
methyl, and triflumizole were found effective
and were evaluated for their ability to control the seed
pathogens. Fluazinam completely inhibited mycelial
growth at a concentration of 100 mg/ml for D. phaseolorum;
and at a concentration of 500 mg/ml for C.
truncatum and C. kikuchii. EC90 values of fluazinam
were similar to that of benomyl. Because fluazinam,
iprodione+propineb, and triflumizole were found effective
against the seed pathogens, these were subjected for
field-testing. Suppression of pod and seed infection by
fluazinam and iprodione+propineb was as high as that
of benomyl without any reduction in agronomic
characters of soybean. This study shows that fluazinam
and iprodione+propineb may be used in combination
with benomyl to control seed pathogens, manage resistance,
and ensure production of high quality soybean
seeds. KCI Citation Count: 0 |
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ISSN: | 1598-2254 2093-9280 |