Posted: May 6, 2011
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www.pestwatch.psu.edu. Weekly summaries will take into account environmental factor, historic trends, data from source areas to the south, and model predictions from phenology (a.k.a. degree-day) models as well as the results of our monitoring.
Last year (2010) was a banner year for corn earworm, as was 2002, 2005, and 2007. These tend to be hot, dry summers; droughty conditions in southern source areas; maybe weak winters. But we’ve also seen years of low or late immigration pressure, such as 2009, resulting in much reduced need for insecticides. Let’s hope for a year of light pressure, and let the pest management costs be borne by the IPM monitoring program, instead of extra sprays and damaged crops!