Meanwhile, Agritrade [ http://agritrade.cta.int/Agriculture/Commodities/Cereals/Kenyan-maize-production-and-the-debate-on-cereals-trade-policy ] says "a more coherent policy, one less reliant on stop-gap measures such as export bans, could assist farmers in times of both surpluses and deficits, and could also facilitate the proper functioning of regional food supply chains."