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 artificially 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 significantly reduced the germination of urediniospore produced on sprayed leaves.

Bibliographic Details

Main Authors:	Angelotti,Francislene, Buffara,Claudia Regina Scapin, Tessamnn,Dauri José, Vieira,Rafael Augusto, Vida,João Batista
Format:	Digital revista
Language:	English
Published:	Universidade Federal de Santa Maria 2014
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000801367
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