Between 2007 and 2012, the number of acres harvested for agricultural crops in Allegheny County increased by over 10%, the biggest percentage jump across the MSA. That and more fun stats from recently released Census of Agriculture statistics.
I personally wonder if the number of acres harvested in Allegheny County has ever increased in the past... in the 'modern' era that is. I bet we have been on a downward slope since... forever? And I'd be curious if anyone has specific insights into huge declines for Fayette and Westmoreland counties.