Toxicity and Field Efficiency of Several Fungicides against Ustilaginoidea virens

RUAN Hong-chun; YANG Xiu-juan; SHI Niu-niu; DU Yi-xin; GAN Lin; CHEN Fu-ru

doi:10.19303/j.issn.1008-0384.2013.06.015

Volume 28 Issue 6

Jun. 2013

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Article Navigation > Fujian Journal of Agricultural Sciences > 2013 > 28(6): 580-583

RUAN Hong-chun, YANG Xiu-juan, SHI Niu-niu, DU Yi-xin, GAN Lin, CHEN Fu-ru. Toxicity and Field Efficiency of Several Fungicides against Ustilaginoidea virens[J]. Fujian Journal of Agricultural Sciences, 2013, 28(6): 580-583. doi: 10.19303/j.issn.1008-0384.2013.06.015

Citation:

RUAN Hong-chun, YANG Xiu-juan, SHI Niu-niu, DU Yi-xin, GAN Lin, CHEN Fu-ru. Toxicity and Field Efficiency of Several Fungicides against Ustilaginoidea virens[J]. Fujian Journal of Agricultural Sciences, 2013, 28(6): 580-583. doi: 10.19303/j.issn.1008-0384.2013.06.015

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Toxicity and Field Efficiency of Several Fungicides against Ustilaginoidea virens

doi: 10.19303/j.issn.1008-0384.2013.06.015

Institute of Plant Protection,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350013,China

Received Date: 2013-05-05
Publish Date: 2013-06-18

Abstract

Abstract

The toxicities of 19fungicides and the mixture difenoconazole validamycin A against Ustilaginoidea virens were tested in laboratory by detecting mycelial growth rate,and eight fungicides with better efficacy were selected to test in fields.The results showed that propiconazole,trifloxystrobin,prochloraz,tebuconazole,picoxystrobin,azoxystrobin and difenoconazole had stronger inhibition on mycelial growth,and the EC50values were 0.025 4,0.032 8,0.041 8,0.045 1,0.082 6,0.100 1and 0.148 2mg.L-1,respectively.The mixture of difenoconazole and validamycin A combined with the ratio of 1∶2had obvious efficiency on Ustilaginoidea virens,with the 174.78 and the EC500.226 3 mg.L-1.Field tests revealed that 43% tebuconazole SC,25% azoxystrobin SC,25% prochloraz EC,8% validamycin A 4%difenoconazole WP and 25% propiconazole EC had better control effect,which were 83.27%,82.76%,82.73%,80.66%and 80.35%,respectively.
- fungicide,
- Ustilaginoidea virens,
- toxicity test,
- field efficiency

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References(23)

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