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IOWA CLIMATE STATEMENT: THE DROUGHT OF 2012

(Des Moines) Iowans can expect more extreme weather like the 2012 drought thanks to changes in the climate caused by greenhouse gases.  That’s according to a statewide group of Iowa scientists who believe that Iowans should act now to reduce economic costs due to climate change “In a warmer climate, wet years get wetter and… ....

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Re: Iowa Stress Degree Days - Agriculture.com Community


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Iowa Stress Degree Days
On the drive today, i noticed many corn fields still curled after the 1.5 2 rain.  It was morning 78, still stressing in many places.  There are fertility and soil condition issues that cause this as much as the weather.  A hat tip to David Kruse for pointing out this website from Iowa State.  As you can see NWIA close and exceeded the 140 point already, 2 weeks before tassel.
By Elwynn Taylor, Department of Agronomy
Water Stress Begins at 86F according to 10- year-old research on corn in the Midwest. This is better stated: At temperatures of 86F (30C) corn plants reach incipient water stress more than 50 percent of the time.  Naturally, this does not apply to irrigated crops and specifically it applies to non-irrigated corn in the Midwest. In a year with ideal moisture, a perfectly healthy corn plant in prime soil does not begin to expeience water stress until temperatures exceed 9 ....

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