Degree Day Information for Iowa

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May 10, 2004
May 17, 2004
May 31, 2004
June 7, 2004
June 14, 2004
June 21, 2004
June 28, 2004
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 June 6, 2004.

Assess, regroup and catch up

Week one of June was dedicated to assessing crop damage from the turbulent weather of late May. Fields dried enough for fieldwork, and most was dedicated to post-emergence spraying for within herbicide programs, and stand assessment to plan for potential replanting. Field crop specialists approximate replant acreage at 1 to 2 percent on average, with the most extensive damage on the Des Moines lobe area of north central Iowa and in river valleys. Potato leafhoppers have arrived in hayfields from southern overwintering sites.

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