Herbicide Recommendations for Carrots: Postemergence Grass and Broadleaf Herbicides
Excerpt from 2010-2011 Chapter 13, Publication 75, Guide to Weed Control, Order this publication
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Table
of Contents| Trade Name | |
|---|---|
| Active Ingredient | linuron |
| Formulation | 50 DF |
| Rate per hectare (active) | 1.125 - 2.25 kg/ha |
| Rate per hectare (product) | 2.25 - 4.5 kg/ha |
| Rate per acre (product) | 0.9 - 1.8 kg/ac |
Precautions (For more information, see Chapter 4. Herbicides Used in Ontario, page 23 and Chapter 5. Notes on Adjuvants, page 69).
- For carrots not treated with linuron PRE.
- Spray when crop has 2 or more fully developed leaves (8-15 cm tall).
- Apply before annual grasses are 5 cm high and before broadleaf weeds are 15 cm high.
- Carrot leaves will become yellow or light green, but they will soon regain their normal colour.
- Use nozzle pressure of 175-275 kPa. Do NOT exceed 275 kPa.
- Do NOT apply with herbicidal oil.
- Do NOT apply during hot, dry weather (greater than 32ºC) or when crop is under stress.
Precautions (For more information, see Chapter 4. Herbicides Used in Ontario, page 23 and Chapter 5. Notes on Adjuvants, page 69).
- Apply as soon as true leaves develop and before carrot roots are thicker than 5 mm.
- Later treatments may produce an oil flavor.
- Weeds should be less than 10 cm high.
- Ragweed, wormwood, and wild carrot are not controlled.
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| Author: | OMAFRA Staff |
|---|---|
| Creation Date: | 25 November 2002 |
| Last Reviewed: | 02 July 2010 |