Selecting a Weed Management Strategy for Tree Fruit and Grapes
Fruit tree growers tend to take one of two approaches:
1. Apply a soil residual herbicide before weeds emerge in the spring. Plan to follow with a 2nd treatment in about 8 weeks (early June).
2. Allow early season weeds to grow for a couple of weeks, before applying a burndown treatment. May include a soil residual herbicide. Plan to follow with a 2nd treatment in about 4-8 weeks (early July).
Planning the timing of the required 2 or 3 treatments, and integrating them into your other work plans, should ensure that weeds are in control during the Critical Weed-free Period and will not rob yields from your crops.
Weed Management Strategy for Grapes
Grape growers have similar options to those listed for tree fruit above, but their season is pushed back by several weeks. However, the later harvest season for grapes may increase the need for late season weed control to enhance harvest operations. Grape growers need to assess the need for August treatments, depending on weed escapes.
Growers who hill vines for winter protection will control early weeds
when they begin to dehill, and will control late weeds when they start
to build the hill in late summer. This is another advantage of hilling
- compressing the need for weed control to about 8 weeks.
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