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Herbicide Recommendations for Established Cherries and Plums: Postemergence Grass and 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 Cherries and Plums: Postemergence Grass and 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. Ignite
  2. Glyphosate
  3. Glyphosate (wick wiper)
  4. Glyphosate (spot spray)
  5. Lorox
  6. Gramoxone
  7. Tree Fruit Herbicide Rating Tables (Table 15-1) (PDF 110k)
  8. Other Cherry and Plum Weed Control Recommendations
  9. Related Links
Ignite
Trade Name
Active Ingredient glufosinate ammonium
Formulation 150 g/L
Rate per hectare (active) 0.405 to 0.75 kg/ha
Rate per hectare (product) 2.7 to 5 L/ha
Rate per acre (product) 1.08 to 2 L/ac

Precautions

  • Registered on plums only.
  • Apply as a directed spray before weeds are 30 cm high.
  • Use 110 to 330 L/ha water (44-132 L/ac).
  • Where weed growth is heavy, use the higher rate and larger water volume.
  • Do NOT apply closer than 40 days to harvest.
  • For trees established at least one year.

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Glyphosate
Trade Name glyphosate

or glyphosate

or glyphosate or glyphosate
Active Ingredient
glyphosate
or glyphosate
or glyphosate
or glyphosate
Formulation
360 g/L
480 g/L
500 g/L
540 g/L
Rate per hectare (active)
0.81 to 4.32 kg/ha
0.81 to 4.32 kg/ha
0.81 to 4.32 kg/ha
0.81 to 4.32 kg/ha
Rate per hectare (product)
2.25 to 12 L/ha
1.69 to 9 L/ha
1.62 to 8.64 L/ha
1.5 to 8 L/ha
Rate per acre (product)
0.9 to 4.8 L/ac
0.68 to 3.6 L/ac
0.65 to 3.5 L/ac
0.6 to 3.2 L/ac

Precautions

  • For actively growing weeds.
  • Apply in 200-300 L/ha water (80-120 L/ac) as a directed spray.
  • Remove all suckers from base of trunks before application.
  • Do NOT apply to trees with "green" bark in the area of application.
  • Do NOT mow or till weeds for at least 5-7 days after application. Wait longer if cool.
  • Only weeds emerged at application time will be controlled. Additional weed control programs will be necessary to control weeds germinating later.
  • Repeat application to regrowth may be necessary for complete control.
  • Do NOT apply closer than 30 days to harvest.
  • For specific information on porduct rates and notes for annual and perennial weed control refer to Table 4-2.

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Glyphosate (wick wiper)
Trade Name
Active Ingredient
glyphosate
or glyphosate
or glyphosate
or glyphosate
Formulation
360 g/L
480 g/L
500 g/L
540 g/L
Rate per hectare (active)
0.36 kg/2 L
0.36 kg/2 L
0.36 kg/2 L
0.36 kg/2 L
Rate per hectare (product)
1L/2 L water
0.75 L/2 L water
0.72 L/2 L water
0.67 L/2L water

Precautions

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Glyphosate (spot spray)
Trade Name
Active Ingredient
glyphosate
or glyphosate
or glyphosate
or glyphosate
Formulation
360 g/L
480 g/L
500 g/L
540 g/L
Rate per hectare (active)
0.36 to 0.72 kg/100 L
0.36 to 0.72 kg/100 L
0.36 to 0.72 kg/100 L
0.36 to 0.72 kg/100 L
Rate per hectare (product)
1 to 2 L/100 L water (1 to 2% solution)
0.75 to 1.5 L/100 L water
0.72 to 1.44 L/100 L water
0.67 to 1.34 L/100 L

Precautions

  • Use hand held sprayers as a spot treatment if wiper equipment is not available.
  • Avoid contact with leaves, trunks and suckers.
  • Do NOT apply closer than 30 days before harvest.

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Gramoxone
Trade Name
Active Ingredient paraquat
Formulation 200 g/L
Rate per hectare (active) 1.1 kg/ha
Rate per hectare (product) 5.5 L/ha
Rate per acre (product) 2.2 L/ac

Precautions

  • Apply in 1000 L/ha water (400 L/ac).
  • For spot spraying, apply 55 mL in 10 L water sprayed to wet weed foliage.
  • Use on trees established one year or more.
  • Avoid contact with green bark, leaves or fruit.
  • May be tank mixed with linuron for trees established at least 10 years.

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Lorox DF or Lorox L
Trade Name

or Lorox L

Active Ingredient
linuron
or linuron
Formulation
50 DF
480 g/L
Rate per hectare (active)
4.5 kg/ha
4.5 kg/ha
Rate per hectare (product)
9 kg/ha
9.36 L/ha
Rate per acre (product)
3.6 kg/ac
3.74 L/ac

Precautions

  • Apply as a directed spray before weeds are 10 cm high.
  • Apply in 400-600 L/ha water (160-240 L/ac).
  • Add a surfactant.
  • Use only under trees established for 10 years.
  • Keep spray off fruit, leaves and green bark of trees.

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Related Links

For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca