Fungicidial activity of benthiavalicarb-isopropyl against Phytophthora infestans and its controlling activity against late blight diseases

Benthiavalicarb-isopropyl, a novel member of the amino acid amide carbamate group of fungicides, is effective against all Oomycete fungal plant pathogens except Pythium spp. Our results demonstrate that this fungicide effectively controls potato and tomato late blight caused by metalaxyl-sensitive a...

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Bibliographic Details
Published in:Journal of Pesticide Science 2005, Vol.30(4), pp.390-396
Main Authors: Miyake, Y.(Kumiai Chemical Industry Co. Ltd., Kikugawa, Shizuoka (Japan). Life Science Research Inst.), Sakai, J, Shibata, M, Yonekura, N, Miura, I, Kumakura, K, Nagayama, K
Format: Article
Language:English
Subjects:
benthiavalicarb-isopropyl
Biological and medical sciences
BLIGHT
CARBAMATE
CARBAMATES
CARBAMATOS
CONTROL DE ENFERMEDADES
CONTROLE DE MALADIES
DEPERISSEMENT
DISEASE CONTROL
FONGICIDE
Fundamental and applied biological sciences. Psychology
Fungal plant pathogens
FUNGICIDAS
FUNGICIDES
late blight
Lycopersicon esculentum
Oomycete
Phytopathology. Animal pests. Plant and forest protection
Phytophthora
PHYTOPHTHORA INFESTANS
Pythium
Solanum tuberosum
TIZON
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Summary:Benthiavalicarb-isopropyl, a novel member of the amino acid amide carbamate group of fungicides, is effective against all Oomycete fungal plant pathogens except Pythium spp. Our results demonstrate that this fungicide effectively controls potato and tomato late blight caused by metalaxyl-sensitive and -resistant strains of Phytophthora infestans. Experiments in vitro demonstrated that benthiavalicarb-isopropyl was ineffective in stopping the discharge of zoospores from zoosporangia and suppressing their motility; but strongly inhibited mycelial growth, sporulation, and the germination of sporangia and cystospores. Experiments in a greenhouse showed that benthiavalicarb-isopropyl has not only a strong preventive, but also a curative effect; its translaminar properties are effective along with its rainfastness and residual activity. In field trials, it was effective in controlling tomato and potato late blight at 25-75 g a.i./ha.
ISSN:1348-589X
0385-1559
1349-0923
DOI:10.1584/jpestics.30.390