Bug Scout 1980
Check Strips Helpful
(Tom Turpin, Entomologist, Purdue University)
It may look like an untreated plot, but it' really the rows my teen-age son hoed!
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September 6, 1980

Some people call them check strips.  Other people refer to them as untreated comparisons or control plots.

Regardless of what you call them, these untreated areas provide valuable pest management information.  For instance, an untreated area can provide information on what weeds escaped a herbicide treatment.

Comparison of treated and untreated areas can help determine the performance of soil insecticides.  In addition, untreated plots can show the economic benefit of control measures for insects or weeds or the value of fertilizers.

When leaving an untreated area, make sure that it is in the center of the field.  Untreated areas near field borders are sure to give incorrect results.  Make sure the area is clearly marked.

You can learn a lot from an untreated area, but only if you put one out.
  

by Tom Turpin, Entomologist, Purdue University

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