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Herbicide Recommendations for Established Apples and Pears: Postemergent Broadleaf Herbicides

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

Pub 75: Guide to Weed Control > Tree Fruits and Grapes > Herbicide Recommendations for Established Apples and Pears: Postemergent Broadleaf Herbicides

Excerpt from 2008 Chapter 15, Publication 75, Guide to Weed Control, Order this publication

Cover of Publication 75, Guide to Weed ControlTable of Contents

  1. 2,4-D
  2. Aim EC
  3. Lontrel (Apples only)
  4. Tree Fruit Herbicide Rating Tables (Table 15-1) (PDF 110k)
  5. Other Apple and Pear Weed Control Recommendations
  6. Related Links
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)
0.95 kg/ha
0.95 kg/ha
0.95 kg/ha
Rate per hectare (product)
2 L/ha
1.68 L/ha
1.44 L/ha
Rate per acre (product)
0.8 L/ac
0.67 L/ac
0.58 L/ac

Precautions

  • For broadleaf weeds, including dandelion, seedling Canada thistle and sow thistle.
  • Apply in early spring after weeds emerge or postharvest to actively growing weeds.
  • Do NOT apply when useable fruit is on the orchard floor.
  • Do NOT apply closer than 80 days to harvest.

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Aim EC

Trade Name
or + Ag-surf
or + Merge
Active Ingredient
carfentrazone-ethyl
+ non-ionic surfactant
or + surfactant/solvent
or + surfactant/solvent
Formulation
240 g/L
 
 
 
Rate per hectare (active)
8.9 to 28 g/ha
0.25 % v/v
0.1 % v/v
0.1 % v/v
Rate per hectare (product)
37 to 117 mL/ha
2.5 L/1000 L
2.5 L/1000 L
1 L/1000 L
Rate per acre (product)
5 to 47 mL/ac
2.5 to 1000 L
2.5 to 1000 L
1 L/1000 L

Precautions

  • Apply POST with a HOODED SPRAYER between the rows or between the plastic mulch.
  • Apply to actively growing weed up to 10 cm tall.
  • Apply in a minimum of 100 L/ha (40 L/ac) water.
  • Apply ONLY once per growing season
  • Aim EC may cause crop injury if the spray is allowed to come in contact with the green stem, leaves, bloom or fruit.
  • Do NOT apply closer than 3 days to harvest.

     

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Lontrel (Apples only)
Trade Name
Lontrel 360 (Apples only)
Active Ingredient clopyralid
Formulation 360 g/L
Rate per hectare (active) 0.202 kg/ha
Rate per hectare (product) 0.56 L/ha
Rate per acre (product) 0.22 L/ac

Precautions

  • For control of emerged vetch at early flowering.
  • Apply in the spring of vetch as a spot treatment.
  • Avoid contact with tree limbs.
  • Do NOT apply closer than 30 days to harvest.

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Related Links

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