Herbicide Recommendations for Wheat (Winter) and Fall Rye (Not underseeded): Postemergence Broadleaf Herbicides

Table of Contents

1. 2,4-D
2. Banvel II or Oracle
3. Buctril M or Badge, Logic M, Mextrol
4. Dyvel
5. Estaprop,Dichlorprop D or Turboprop
6. Infinity
7. MCPA Amine
8. Mecoprop or Compitox
9. Pardner or Koril
10. Refine Extra + Agral 90
11. Target or Sword
12. Cereal Herbicide Rating Table (Table 8-1) (PDF 30 kb)
    • Annual Grasses
    • Annual Broadleaf Weeds
    • Perennial Weeds
13. Other Cereal Crop Weed Control Recommendations
• Barley, Oats and Wheat (Spring)
• Wheat (Winter) and Fall Rye (Underseeded, Soil Applied, Preharvest)
14. Stages of Cereal Development
15. Related Links

Precautions

• Do NOT apply to seedling winter cereals in the fall.
• For control of winter annuals apply early before flower buds appear on the weeds.

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Precautions

• Apply in the spring when the crop is 15-25 cm tall before the shotblade stage.
• Can be used with 2,4-D or MCPA amine 0.42 kg/ha (0.84 L/ha (0.33 L/ac) of 500 g/L formulations).
• The addition of 2,4-D or MCPA will give improved control of pepper-grass, shepherd's purse and pennycress.
• Do NOT use on fall rye.

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Precautions

• Winter wheat may be treated from the 2-4 leaf stage in the fall or from the 2-leaf to early leaf flag stage in the spring.

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Precautions

• Apply to winter wheat in the spring when weeds have emerged and the crop is 15-25 cm tall before the shotblade stage.
• Do NOT use on rye.

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Precautions

• Apply in early spring to emerged weeds.
• May be used until cereals are up to the flag leaf stage.

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Infinity

Precautions

• Apply postemergence and prior to flag leaf emergence.
• The addition of ammonium sulphate at 1 L/ha (0.4 L/ac) is required for the control of cleavers at the 4-6 whorl growth stage.
• Do NOT graze the treated crops or cut for forage or hay within 25 days of application.
• Do NOT apply to cereals underseed with legume crops.
• Do NOT harvest wheat or barley for grain or straw within 45 days of application.
  

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  MCPA Amine

  Trade Name	MCPA Amine
  Active Ingredient	MCPA
  Formulation	500 g/L
  Rate per hectare (active)	0.35 to 0.85 kg/ha
  Rate per hectare (product)	0.7 to 1.7 L/ha
  Rate per acre (product)	0.28 to 0.68 L/ac

  Precautions

  • Treat in the spring when the crop growth begins until the early shot blade stage.
  • For control of winter annuals apply early before flower buds appear on the weeds.

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  Mecoprop or Compitox

  Trade Name	Mecoprop or Compitox
  Active Ingredient	mecoprop
  Formulation	150 g/L
  Rate per hectare (active)	0.83 to 1.05 kg/ha
  Rate per hectare (product)	5.5 to 7 L/ha
  Rate per acre (product)	2.2 to 2.8 L/ac

  Precautions

  • Use from the 3-leaf stage to early flag leaf when cereals are 10-15 cm tall.
  • Apply when weeds are in the 2-4 leaf stage.
  • Use the higher rate for more mature weeds.

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  Pardner or Koril

  Trade Name	Pardner	or Koril
  Active Ingredient	bromoxynil	or bromoxynil
  Formulation	280 g/L	235 g/L
  Rate per hectare (active)	0.28 to 0.336 kg/ha	0.28 to 0.336 kg/ha
  Rate per hectare (product)	1 to 1.2 L/ha	1.2 to 1.4 L/ha
  Rate per acre (product)	0.4 to 0.48 L/ac	0.48 to 0.56 L/ac

  Precautions

  • Winter wheat may be treated from the 2-4 leaf stage in the fall or from the time growth begins to early flag leaf stage in the spring.
  • More effective on winter annuals when applied as a fall treatment.

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  Refine Extra + Agral 90

  Trade Name	Refine Extra	+ Agral 90
  Active Ingredient	thifensulfuron-methyl/tribenuron-methyl	+ non-ionic surfactant
  Formulation	75 DF
  Rate per hectare (active)	15 g/ha	0.2 % v/v
  Rate per hectare (product)	20 g/ha	2 L/1000 L
  Rate per acre (product)	8 g/ac	2 L/1000 L

  Precautions

  • Registered for fall or spring use on winter wheat. For fall use, apply from the 2-leaf growth stage of winter wheat and before the first killing frost.
  • Apply to emerged young actively growing weeds that are less than 10 cm tall or across.
  • Canada thistle, sow thistle and round-leaved mallow are suppressed.
  • Apply when the crop is in the 2-leaf to flag leaf (shot blade) stage.
  • Always add water soluble packages to clear water with agitator running.
  • Do NOT use on rye.
  • Apply only once per growing season.

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  Target or Tracker XP or Sword

  Trade Name	Target or Tracker XP or Sword
  Active Ingredient	bromoxynil/MCPA/mecoprop
  Formulation	400 g/L
  Rate per hectare (active)	0.4 to 0.6 kg/ha
  Rate per hectare (product)	1 to 1.5 L/ha
  Rate per acre (product)	0.4 to 0.6 L/ac

  Precautions

  • Apply in spring before the crop is more than 30 cm high (top leaf extended).
  • Winter annuals should be sprayed as soon as new growth starts.
  • Apply when other weeds are in the 2-3 leaf stage.
  • Do NOT use on rye.

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  Related Links

  • Weeds in Ontario
  • Cereal Crops in Ontario - Barley, Oats, Wheat
  • Problem Weed Control in Field Crops
  • Pesticide Companies and Agents
  • OMAFRA Sprayer Calibration Calculator
  • Search the PMRA website
  • OMAFRA Publication 505: Ontario Weeds
  • OMAFRA Publication 75: Guide To Weed Control

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