The International Centre for Trade and Sustainable Development has produced a paper on how a trade deal on sugar would affect importing and exporting countries. You can read it here: Sugar
The paper finds that a significant amount of sugar trade is conducted under preferential trade agreements which encourages sugar production where it is not competitive at the expense of low-cost sugar producing countries.
The EU sugar reforms had an adverse effect on higher cost producers in the Global South such as Fiji, Guyana and Mauritius. Full access by LDCs to the EU sugar market once the Everything But Arms Initiative is in operation should help countries like Sudan to boost their EU market share.