Pestwatch 2011

Posted: May 6, 2011

Through the support of PVGA, the 2011 sweet corn trapping network has distributed 2,150 pheromone lures and 100 Vaportapes among 20 Extension Educators, to create weekly dataflow from ~49 farms, using a biweekly pheromone replacement rate over a 14-15 week season. It’s truly a cooperative effort that provides a first cut of the pest pressure from corn earworm, fall armyworm, and both the E- and Z- pheromone race of European corn borer.


Join our blog this year to receive up to date – weekly reports and timely tips also available at 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!