www.mozilla.com Weather Central
Voices
Headlines

Hutch CC's Jamie Patrick picks Colorado State -4/15/2014, 12:43 PM

USD 308 criticizes school finance bill -4/15/2014, 11:40 AM

Two vehicles, pedestrian involved in accident -4/15/2014, 11:40 AM

Sanctuary dedication latest milestone in Chapel Hill's growth -4/15/2014, 11:40 AM

Jobs, water source remain top priorities, Wichitans say -4/15/2014, 11:40 AM

Edwards County accident blamed on slick roads -4/15/2014, 11:40 AM

Kansas Honor Flight to leave for Washington -4/14/2014, 3:42 PM

Hutchinson hospital names new vice president -4/14/2014, 3:42 PM

Experts offer advice for Wichita gardeners before tonight's freeze -4/14/2014, 3:42 PM

China grants approval for Cessna's Citation XLS+ -4/14/2014, 3:41 PM

Wichita weather: Snow returns in mid-April -4/14/2014, 3:40 PM

Work on Waldron near hospital, clinic begins Monday -4/14/2014, 3:40 PM

myTown Calendar

SPOTLIGHT
[var top_story_head]

KSU finds upside to elevated carbon dioxide levels

Published on -4/5/2013, 6:35 AM

Printer-friendly version
E-Mail This Story

MANHATTAN, Kan. (AP) -- A Kansas State University researcher has found an agricultural upside to elevated carbon dioxide levels in the earth's atmosphere.

Agronomy professor Mary Beth Kirkham says experiments have shown that the elevated levels allow winter wheat and sorghum to use water more efficiently, which mitigates the effect drought has on those crops.

She's written a book on the subject, using data going back to 1958, when the first accurate measurements of atmospheric carbon dioxide were made. Data shows that carbon dioxide concentrations have increased from 316 parts per million to 390 parts per million from 1958 to 2011, the last year with complete data available.

Kirkham says elevated carbon dioxide closes pores on the leaves through which water escapes. That means less water is used when carbon dioxide levels are elevated.

digg delicious facebook stumbleupon google Newsvine
More News and Photos

Associated Press Videos