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  Evaluation of Hexazinone Formulations and Timings for Application in the Fruiting Year of Wild Blueberries

K.V McCully1, M.J. Melanson11 and J. Dennis 1

Abstract: Two trials were conducted to evaluate hexazinone application in the fruiting year of wild blueberries. Two hexazinone formulations, Velpar 75DF and Pronone 10G, along with an untreated control were evaluated at three application timings (early, mid, and late) in a split plot randomized complete block design. Yields and visual ratings on weed control and crop injury were collected. Results indicated that early and mid applications (up to bloom) of both Velpar and Pronone caused little crop injury. Late applications caused high injury levels and should be avoided. The only time formulation was important was with the late applications. Pronone caused less injury than Velpar when applied late. Late applications caused the greatest reductions in yields. Weed control was not influenced significantly by application timing or formulation.

1 Potato & Horticulture Branch, NBDARD, Fredericton, NB E3B 5H1

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