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Tomato
> Year-Round IPM Program > Planting > Weed
Survey
Tomato
 Weed
Survey—Postplanting
Conduct a survey after planting but before weeding to determine
the spectrum of weeds present. Records from previous crops are
also helpful to indicate which weeds may be in the seed bank
and require control before germination. Depending on the planting
date, it is possible that you will see winter
annuals and summer annuals.
How to survey
Walk through each field in a random pattern,
rating the degree of infestation for each weed species.
Use either a numeric scale of 1 to 5 (1 being the lightest,
5 being the heaviest), or rate as "light," "medium," or "heavy."
- Note the location of weeds producing seed as carefully as
possible.
- Check
fencerows, ditch banks, field edges, and wet spots
as these may be problem areas for weed growth.
- Check areas around the field
edges as these areas could be potential sources
for wind-disseminated seeds.
- Pay particular attention to perennial
weeds.
- Sketch a map of the
field and mark areas with major weed infestations for
follow-up control action.
- Record results on a weed
survey form .
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