Degree Day Information for Iowa

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May 10, 2004
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July 5, 2004
July 12, 2004
July 19, 2004
July 26, 2004
 Degree Day Map
Base-50 degree days. (Accumulated degree days shown; departure from average shown in parentheses.)
May 1, 2004 through July 4, 2004.

All in all, a good season...so far

Crop development progressed nicely throughout Iowa last week. A slight return to more normal temperatures, coupled with sunshine and generally favorable moisture has corn, soybean, and forage crops all doing well. On July 4, I saw my first full fields of corn tasseling, with one silked in southwest Iowa.

Many producers that did have problems with delayed applications leading to big weeds have wrestled them back under control in areas where I was traveling. More sunshine, and normal temperatures and rainfall are on everyone's July wish list.

Updated July 22, 2004.

More about degree days:

How and why
we measure
degree days
(5/17/2004)

Degree days and
crop management
(4/6/1998)

Updated each Wednesday until July 22, after which it is updated monthly.
Provided by Rich Pope, Extension Specialist
Department of Entomology, Iowa State University,
Ames, Iowa. Original weather data from
Midwest Climate Information Center. 		[Integrated Crop Management]
[Integrated Pest Management]
[To Iowa State Entomology Home Page]

This page is part of the Iowa State Entomology site. Last updated 7/22/04 by John VanDyk