Unit 1: Increasing the supply of arable land and the effect on the price of wheat

This BBC article outlines the EU proposals to do away with set aside land, at least for one year

http://news.bbc.co.uk/1/hi/business/6993635.stm

a) What will be the effect on the supply of agricultural land?
b) What will be the effect on the supply wheat?
c) Draw a S&D diagram and explain the effect of this policy on the world price of wheat
d) What possible drawbacks are there to this policy?