ISHS Acta Horticulturae 446: VI International Symposium on Vaccinium Culture
IMPROVED SPRAYER TECHNOLOGY TO REDUCE FUNGICIDE USE IN BLUEBERRY PRODUCTION |
| Authors: | E.J. Hanson, G.R. VanEe, D.C. Ramsdell, J.F. Hancock, J.A. Flore |
| Keywords: | Vaccinium corymbosum, Alternaria, Anthracnose, Botrytis, Rhizopus |
| Abstract:
Highbush blueberries in Michigan are treated with multiple fungicide sprays to control fungal pathogens of fruit and canes. A multi-year study was initiated to compare spray deposition and fruit rot control from a conventional air blast sprayer and a multi-fan, over-the-row sprayer. The over-the-row sprayer provided similar disease control as the conventional sprayer while applying one third less fungicide. Spray deposition patterns were compared by observing the deposition of dye and copper on card targets positioned in the bushes. Deposition patterns were similar with both sprayers early in the season before the bush canopy developed. After the canopy developed, the over-the-row sprayer appeared to provide less coverage than the airblast sprayer in the bottom of the bush. | |
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