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Improved disease control in vineyards
Field trials in five diverse wine grape canopies, in two commercial vineyards with two different commercial sprayers, yielded information on retention (at four plant growth stages) which depend on adjuvant type and amount.
The use of two super-spreading organosilicone adjuvants reduced pesticide spray volumes to ≤ 200 L/ha, while providing better coverage and improved spray retention on grape bunches. There was a consistent trend of improved disease control; the incidence and severity of botrytis, and powdery mildew, were all reduced; there were no adverse effects on fruit or wine quality, grape fermentation or pesticides residues; the adjuvant prescriptions provided increased work rates and reduced application costs per hectare.
Gaskin RE, Manktelow DW & Elliott GS. 2004. Adjuvant prescriptions to lower water volumes and improve disease control in vineyards. 7th International Symposium on Adjuvants for Agrochemicals (ISAA 2004). 8-12 November 2004. Cape Town, South Africa. ISBN number: 1-920-01716-X