Fielding Farmers' Questions, Including Some They Don't Ask

Liz Martin for The Chronicle

Denise Schwab, a beef specialist with the Iowa State Extension Service, diagnosed an illness in Mr. Birker's 90-cow herd. Fencing off a blue-green-algae-covered creek the cows drank from solved the problem.
November 26, 2012

Ross Butler, lanky and laconic, is waiting with a sheaf of papers when Denise Schwab parks in front of the Blairstown Public Library. It's midmorning and Ms. Schwab, a beef specialist with Iowa State University Extension and Outreach, has come down…

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