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Herbicide Recommendations for Cranberries: Postemergence Broadleaf Herbicides

Author: OMAFRA Staff
Creation Date: 25 November 2002
Last Reviewed: 20 June 2008

Pub 75: Guide to Weed Control > Berry Crops > Herbicide Recommendations for Cranberries: Postemergence Broadleaf Herbicides

Excerpt from 2008 Chapter 14, Publication 75, Guide to Weed Control, Order this publication

Cover of Publication 75, Guide to Weed ControlTable of Contents

  1. Introduction
  2. 2,4-D
  3. Lontrel
  4. Tree Fruit Herbicide Rating Tables (Table 15-1) (PDF 110k)
  5. Other Cranberry Weed Control Recommendations
  6. Related Links

 

Introduction

Postemergence - Leaf stage of the weeds is critical for good weed control. Smaller weeds are generally easier to kill but there needs to be enough leaf surface to intercept the herbicide. Apply according to recommended leaf stages. Crop stage is important to optimize crop safety. Adjuvants will frequently improve the weed control when used as directed. Weather or other conditions may influence the optimum rate of adjuvant, see the product label for more details. Always use appropriate drift management technology.

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2,4-D
Trade Name

or 2,4-D

or 2,4-D

Active Ingredient
2,4-D
or 2,4-D
or 2,4-D
Formulation
470 g/L
564 g/L
660 g/L
Rate per hectare (active)
0.47 kg/2 L water
0.47 kg/2 L water
0.47 kg/2 L water
Rate per hectare (product)
1 L/2 L water (33% solution)
0.83 to L/2 L water
0.71 L/2 L water

Precautions

  • For emerged annual and perennial weeds, including hardhack, St. John's Wort, alder, purple aster.
  • Apply with a ropewick or other wiper to actively growing weeds (June to July).
  • Do NOT contact the crop.
  • Use ONLY one application per year.
  • Do NOT apply closer than 50 days to harvest.

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Lontrel
Trade Name
Active Ingredient clopyralid
Formulation 360 g/L
Rate per hectare (active) 7.2 g/L water
Rate per hectare (product) 20 mL/L water (2% solution)

Precautions

  • For emerged vetch.
  • Do NOT use more than 2 applications a year - in spring before bud break, again until growth is 1 to 2 mm long, and/or in the fall at least 2 weeks after harvest, when vines have winter dormancy colour.
  • Apply with wiper equipment onto weed foliage that extends above the cranberry canopy. Avoid contact with cranberry shoots after growth begins.
  • Do NOT apply closer than 60 days to harvest.

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Related Links

 

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