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Residues of four fungicides applied for control of grapevine anthracnose caused by Sphaceloma ampelinum in a budburst to flowering spray program

Residues of four fungicides applied for control of grapevine anthracnose caused by Sphaceloma... Four fungicides ziram (Ziram), dichlofluanid (Euparen), fluazinam (Shirlan) and captan (Captan) were applied in a five-spray program from budburst to flowering and a three-spray program from budburst to 20–30 cm shoot length stage in a Sultana vineyard at Irymple, Victoria. Bunch samples were collected at five intervals after the last application in the five-spray program and at two intervals after the three-spray program and analysed for residues of the fungicides applied. None of the three-spray treatments caused detectable residues at harvest. Some of the samples from the five-spray treatments of captan and ziram caused residues between 0.07–0.1 mg/kg at harvest. Each residue was less than the corresponding maximum residue limit (MRL). The time interval between the last application and harvest had a bigger influence on residues than the growth stage at which the sprays were applied. Pre-flowering sprays have the potential to cause residues at harvest if the degradation rates of applied chemicals are sufficiently slow. All four fungicides can be applied in a budburst to flowering spray program without risk of exceeding recognised MRLs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Australasian Plant Pathology Springer Journals

Residues of four fungicides applied for control of grapevine anthracnose caused by Sphaceloma ampelinum in a budburst to flowering spray program

Magarey, R.; Emmett, R.; Roberts, G.
Australasian Plant Pathology , Volume 24 (3) – Jan 28, 2011
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References (12)

Publisher
Springer Journals
Copyright
Copyright
Subject
Life Sciences; Plant Pathology; Plant Sciences; Agriculture; Entomology; Ecology
ISSN
0815-3191
eISSN
1448-6032
DOI
10.1071/APP9950209
Publisher site
See Article on Publisher Site

Abstract

Four fungicides ziram (Ziram), dichlofluanid (Euparen), fluazinam (Shirlan) and captan (Captan) were applied in a five-spray program from budburst to flowering and a three-spray program from budburst to 20–30 cm shoot length stage in a Sultana vineyard at Irymple, Victoria. Bunch samples were collected at five intervals after the last application in the five-spray program and at two intervals after the three-spray program and analysed for residues of the fungicides applied. None of the three-spray treatments caused detectable residues at harvest. Some of the samples from the five-spray treatments of captan and ziram caused residues between 0.07–0.1 mg/kg at harvest. Each residue was less than the corresponding maximum residue limit (MRL). The time interval between the last application and harvest had a bigger influence on residues than the growth stage at which the sprays were applied. Pre-flowering sprays have the potential to cause residues at harvest if the degradation rates of applied chemicals are sufficiently slow. All four fungicides can be applied in a budburst to flowering spray program without risk of exceeding recognised MRLs.

Journal

Australasian Plant Pathology – Springer Journals

Published: Jan 28, 2011

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