Protective, curative and eradicative activities of fungicides against grapevine rust.

The protective, eradicative and curative activities of the fungicides azoxystrobin, tebuconazole, pyraclostrobin+metiram, and ciproconazole against grapevine rust, were determined in greenhouse. To evaluate the protective activity, leaves of potted ´Niagara´ (Vitis labrusca) vines were artifi cially inoculated with an urediniospore suspension of Phakopsora euvitis four, eight or forteen days after fungicidal spray; and to evaluate the curative and eradicative activities, leaves were sprayed with fungicides two, four or eight days after inoculation. Disease severity was assessed 14 days after each inoculation. All tested fungicides present excellent preventive activity against grapevine rust; however, tebuconazole and ciproconazole provide better curative activity than azoxystrobin and pyraclostrobin+metiram. It was observed also that all tested fungicides signifi cantly reduced the germination of urediniospore produced on sprayed leaves.

Bibliographic Details

Main Authors:	ANGELOTTI, F., BUFFARA, C. R. S., TESSAMNN, D. J., VIEIRA, R. A., VIDA, J. B.
Other Authors:	FRANCISLENE ANGELOTTI, CPATSA; CLAUDIA REGINA SCAPIN BUFFARA, Universidade Estadual de Maringá; DAURI JOSÉ TESSAMNN, Universidade Estadual de Maringá; RAFAEL AUGUSTO VIEIRA, Universidade Estadual de Maringá; JOÃO BATISTA VIDA, Universidade Estadual de Maringá.
Format:	Artigo de periódico biblioteca
Language:	English eng
Published:	2014-09-16
Subjects:	Phakopsora euvitis, Ferrugem da videira, Disease., Uva, Doença, Fungicida, Vitis Vinifera., Grapes.,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/994987
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