39. Scout Fields For Insects |
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Accurate and timely scouting helps you to identify potential problems
before they become less manageable, and it may prevent unnecessary
applications. According to University of Illinois research, many
growers in an on-farm research project actually lost money by needlessly
applying a soil insecticide. Scouting could have prevented that.
When entering a field to scout, make sure you have the proper equipment,
and identify the field on a scouting report form by the field number,
location, or other characteristics.
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Also,
record the date, time, and weather conditions; the stage of growth
of the crop; and general soil and crop conditions. Sample the field
in the pattern prescribed for the particular problem and then record
the results. |
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If
you expect to find pests uniformly across a field, select sampling
sites that are also evenly distributed. In a square field, sample
the center and the four corners. In a rectangular field, you might
want to make a zigzag pattern.
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If
pests tend to concentrate in particular areas, such as high or low
spots, examine those spots more carefully than other areas. That way,
you can determine the extent and severity of damage. |
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If
pests first invade a field at the borders—as stalkborers and
grasshoppers often do—scout along the fence lines and along
any waterways that run into the field. |
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