US Farming

I've just finished reading "Omnivore's Dilemma".  It's highly recommended.   There's a farmer Joel  Salatin, who is bucking the industrial agriculture trend.  His farm is not the main feature of the book, but its one of many narratives that stay with you.

I wonder how cows would react to a grid of  VAWTs above them.  They wouldn't mind the guy ropes, but would the rotating turbines disturb them?  You'd need transparent (plastic) sails of course so that the grass would continue to grow at full speed. 

Plowed fields couldn't be used of course as farm machinery and guy-ropes are incompatible.