Integrated Crop Management News
 

Document Type

Article

Publication Date

7-21-2009

Abstract

For organisms, heat drives development. If you can regulate your own heat like we humans do every day is a balmy 98.6 or so, so development every day is the same and can be measured by the calendar. But for our field crops and most of the pests they face, development is based on the heat they get from the environment. And, less heat means slower growth. For the week of July 12--19 alone, Iowa normally accumulates 200 base-50 degree days as a statewide average. Last week that accumulation was 133, or about four and a half "normal" days for the week. So, for the season since May 1, we are now 143 to 205 degree days behind normal.

Language

en

File Format

application/pdf

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The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit https://crops.extension.iastate.edu/.