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Little mallow (cheeseweed)Winter Weed Survey

By surveying weeds in winter, you can identify summer species that have escaped the current year’s weed control program and identify any winter species that have emerged; these weeds need to be controlled before they cause problems in the orchard or before they set seed.  Winter surveys help in planning postemergent weed management. If preemergent herbicides have already been used, the survey helps in determining the success of the treatment and identifying resistant populations.

Record your weed survey results (winter weed survey form109 KB, PDF). Keep these records to track weed population information from year-to-year to better understand ongoing weed control problems.

Weed identification

Identify common winter broadleaves and grasses.

How to survey your orchard

  • Survey your orchard in winter to see which summer weed species have escaped control.
  • Identify winter annuals or any emerging species to see which control treatments are needed, such as postemergent herbicides or cultural methods.
  • Pay particular attention to perennials, weeds near trees, and border areas; sketch out a map of your orchard and note areas of concern.
  • Keep records of your survey results. By knowing which species are present, you will be able to make appropriate decisions on cultural and chemical controls.

Information collected over a period of years tells you how weed populations may be changing and how effective your management operations have been.

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