Herbicide Recommendations for Cucumbers: Soil Applied Grass and Broadleaf Herbicides

Excerpt from 2010-2011 Chapter 13, Publication 75, Guide to Weed Control, Order this publication

Table of Contents

1. Dacthal
2. Prefar followed by Alanap
3. Related Links

Precautions (For more information, see Chapter 4. Herbicides Used in Ontario, page 23 and Chapter 5. Notes on Adjuvants, page 69).

• PRE.
• Apply only when cucumber plants have 4-5 true leaves, are well established and growing conditions are favourable for good plant growth otherwise crop injury may result.
• Apply prior to weed seed germination. If weeds have emerged, cultivate the soil before application.
• Apply at a rate of 9 - 13.5 kg/ha (3.6 - 5.4 kg/ac) on light sand or sandy loam soils.
• Apply at a rate of 11 - 15.5 kg/ha (4.4 - 6.2 kg/ac) on medium silt loam soils.
• Do NOT use on muck soils.
• Apply in 250 L/ha (100 L/ac) of water.
• Rainfall or irrigation (about 1 cm) is necessary for activation.

  Prefar followed by Alanap

  Trade Name	Prefar	followed by.. Alanap
  Active Ingredient	bensulide	followed by.. naptalam
  Formulation	480 g/L	240 g/L
  Rate per hectare (active)	4.56 - 6.75 kg/ha	2.28 - 4.56 kg/ha
  Rate per hectare (product)	9.5 - 14 L/ha	9.5 - 19 L/ha
  Rate per acre (product)	3.8 - 5.6 L/ac	3.8 - 7.7 L/ac

Precautions (For more information, see Chapter 4. Herbicides Used in Ontario, page 23 and Chapter 5. Notes on Adjuvants, page 69).

• PREFAR PPI (incorporated to a depth of 2.5 - 5 cm), followed by ALANAP PRE.
• May also be tank-mixed PPI (Do NOT incorporate deeper than 2.5 cm).
• Do NOT use on muck soils.
• Use the lower rates on light, sandy soils.

Related Links

• Weeds in Ontario
• Vine Crop 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