We have a similar thing over here, CAP or common agricultural policy. These farming subsidies are the biggest bone of contention in developing countries. They would rather we stopped these subsidies than pay aid, thus allowing African and Latin American farmers to compete with European/American farmers on a level playing field.
Agricultural communities are traditionally right wing, there is a valid argument about food security, but it never ceases to amaze me that those in receipt of the largest agricultural subsidies tend to be the most critical of 'benefit/welfare scroungers.'
Industry has farmed off jobs to non-unionised overseas labour because their workforce is not so right wing, and the money stays with the big corporations, in a way that it can't with agriculture. I think the spread of GM crops has more to do with maximising profits for big business than anything to do with food security.