Conduct a survey immediately before harvest to determine the spectrum of weeds present for next year's planning records. Records from previous crops will indicate which weeds escaped control, thus possibly infesting future crops.
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."
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