Herbicide Recommendations for Soybeans: Soil Applied Broadleaf Herbicides

Table of Contents

1. Firstrate
2. Lorox L
3. Sencor 75 DF
4. Valtera
5. Soybean Herbicide Weed Control Ratings (Table 11-1) (PDF file - 59 kb)
   • Annual Grasses
   • Broadleaf Weeds
   • Perennial Weeds
6. Other Soybean Weed Control Recommendations
   • Pre-Plant Burndown Herbicides
   • Soil Applied Grass Herbicides
   • Soil Applied Grass and Broadleaf Herbicides
   • Soil Applied Tank-mix Options
   • Postemergence Grass Herbicides
   • Postemergence Broadleaf Herbicides
   • Postemergence Grass and Broadleaf Herbicides
   • Postemergence Grass and Broadleaf Herbicides - Roundup Ready (glyphosate tolerant) varieties only
   • Postemergence Tank-mix Options
   • Spot Treatment
   • Wick Wiper and Roller Application
   • Preharvest
7. Stages of Soybean Leaf Development
8. Related Links

Precautions

• Apply PRE.
• Apply in both conventional and conservation tillage systems.
• Some rotational cropping restrictions apply (Table 4-4 (PDF - 82K).

Precautions

• Apply PRE.
• Can be tank-mixed with glyphosate for PP burndown of emerged annual and perennial weeds, see Chapter 6, for more information.
• Do NOT use on sands (less than 2%-3% organic matter,
• Plant soybeans at least 4 cm deep.
• Heavy rainfall and adverse weather conditions may result in temporary crop injury.
• Use higher rate for muck soils and clay soils.

Precautions

• Apply PP, PPI or PRE.
• Can be tank-mixed with glyphosate or Gramoxone for PP burndown of emerged annual and perennial weeds, see Chapter 6, for more information.
• Do NOT use on sandy or coarse soils with less than 2% organic matter.
• Use the recommended rate for each soil types (see label), otherwise crop injury may occur.
• Excessive rainfall and adverse weather conditions may result in crop injury.
• Plant soybeans at least 4 cm deep.
• For preplant applications:
  • Apply up to 30 days prior to seeding the crop.
  • Use the higher rate when weeds are dense and are on soils with high organic matter (over 4%) and on soils with high clay content.
  • If emerged weeds are taller than 4 cm, apply in tank-mix with glyphosate.
• Some rotational cropping restrictions apply (see Table 4-4 (PDF - 82K)).

Precautions

• Apply to coarse and medium textured soils.
• Apply to soybeans prior to planting or within 3 days after planting but prior to soybean emergence.
• Severe crop injury will result if applications are made to soybeans that begun to crack through the soil surface or have emerged.
• Do NOT within 100 metres of non-dormant pears.
• Do NOT tank-mix with Dual II Magnum, Boundary or Frontier Max.
• Any tillage operation performed after application will reduce weed control.
• Apply only once per growing season.
  

Related Links

• Weeds in Ontario
• Soybeans in Ontario
• Problem Weed Control in Field Crops
• Integrated Pest Management (IPM)
• Pesticide Application and Safety
• Pesticide Companies and Agents
• OMAFRA Sprayer Calibration Calculator
• Search the PMRA website
• OMAFRA Publication 505: Ontario Weeds
• OMAFRA Publication 75: Guide To Weed Control