2016 is starting off warm

March 15, 2016 2:44 PM
Blog Post

I was curious to compare growing degree days (GDDs) over the last couple summers. It seemed like 2014 and 2015 were cool, wet springs with a slow start for insects. But I wanted to check actual temperature history instead of relying on my memory. I used the ISU Agronomy Mesonet to query GDDs at three Iowa locations in 2014 and 2016 (Decorah, Ames and Burlington). What a difference in accumulating temperatures! So far this summer seems about a month ahead of 2014 in GDDs. Like I mentioned in a previous blog post, this warm spring is providing a head start for insect development and could have management implications later this summer. 

GDDs for three Iowa locations in 2014


GDDs for three Iowa locations in 2016


Erin Hodgson Professor

Dr. Erin Hodgson started working in the Department of Entomology, now the Department of Plant Pathology, Entomology, and Microbiology, at Iowa State University in 2009. She is a professor with extension and research responsibilities in corn and soybeans. She has a general background in integrated...