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Herbicide Recommendations for 3rd Year and Established Asparagus:
Before Spear Emergence or After Last Cutting

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

Pub 75: Guide to Weed Control > Vegetable Crops > Herbicide Recommendations for 3rd Year and Established Asparagus: Before Spear Emergence or After Last Cutting

Excerpt from 2008 Chapter 13, Publication 75, Guide to Weed Control, Order this publication

Cover of Publication 75, Guide to Weed ControlTable of Contents

  1. Soil Applied Grass Herbicides
  2. Vegetable Herbicide Weed Control Ratings (Table 13-1) (PDF file - 24kb)
  3. Other Asparagus Weed Control Recommendations:
  4. Related Links

 

Soil Applied Grass Herbicides

Treflan or Rival or Bonanza
Trade Name Treflan EC

or Rival EC

or Bonanza 400

Active Ingredient
trifluralin
or trifluralin
or trifluralin
Formulation
480 g/L
500 g/L
400 g/L
Rate per hectare (active)
1 to 2 kg/ha
1 to 2 kg/ha
1 to 2 kg/ha
Rate per hectare (product)
2.08 to 4.16 L/ha
2.7 to 4.4 kg/ha
2.5 to 5 L/ha
Rate per acre (product)
0.83 to 1.66 L/ac
0.8 to 1.6 kg/ac
1 to 2 L/ac

Precautions

  • PPI - Application should occur early enough in the spring to ensure that spears are not injured by the required incorporation (5-10 cm).
  • Apply after last cutting of spears (postharvest disking) and incorporate.
  • Use ONLY on established plantings of 3 years or older.

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