Details

Autor(en) / Beteiligte

• Magarey, RD
• Emmett, RW
• Roberts, GS

Titel

Residues of Four Fungicides Applied for Control of Grapevine Anthracnose Caused by Sphaceloma Ampelinum in a Budburst to Flowering Spray Program

Ist Teil von

• Australasian plant pathology, 1995, Vol.24 (3), p.209-214

Erscheinungsjahr

1995

Beschreibungen/Notizen

• Four fungicides ziram, dichlofluanid (as Euparen), fluazinam (as Shirlan) and captan were applied to control S. ampelinum [Elsinoe ampelina] in a 5-spray programme from budburst to flowering and a 3-spray programme from budburst to 20-30 cm shoot length stage in a Sultana vineyard at Irymple, Victoria, Australia. Bunch samples were collected at 5 intervals after the last application in the 5-spray programme and at 2 intervals after the 3-spray programme and analysed for residues of the fungicides applied. None of the 3-spray treatments caused detectable residues at harvest. Some of the samples from the 5-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. It is concluded that all 4 fungicides can be applied in a budburst to flowering spray programme without risk of exceeding recognized MRLs. Australasian Plant Pathology 24(3) 209 - 214 Full text doi:10.1071/APP9950209 © CSIRO 1995