The link didn't work.     And if there was a general drop in farm revenue, Iowa, Nebraska, Illinois, Indiana could expect similar results and they did not.   But, I didn't get to see the logic in the artical - it just said 'not available' 

I'm aware of the slumping prices of crude oil.  That's a world wide slump as natural gas has become cheaper and plentiful.  Again, nothing unique about Kansas outside of Brownbecks mis-calculation (Which I assume was an honest commitment to a false hypothesis).