RÉSUMÉ Contexte et objectif :Le coton a longtemps contribué à la sécurité alimentaire, du fait de son rôle historique joué sur la productivité agricole. Cette étude à pour objectif d'apporter des éléments de contribution aux débats actuels sur les effets de la crise de la filière cotonnière sur la sécurité alimentaire. Méthodologie et Résultats : Depuis les années 2000, les crises successives du marché mondial ont affecté fortement la filière cotonnière. Les céréales ont été les cultures les plus touchés par la crise cotonnière, notamment dans la fourniture des intrants (engrais). Face au contexte défavorable de la culture du coton, les exploitations agricoles diversifient leurs activités, en réorientant leurs activités vers les cultures céréalières, mais, force est de constater que les superficies cultivées restent très faibles, les revenus sont limités et en baisse. Dans ce contexte, la sécurité alimentaire reste très précaire et des risques de famines sont permanents, ceci est dû au fait que les conditions d'accès aux intrants sont plus complexes et les coûts de plus. Conclusion et application de résultats: Cette situation a des effets directs sur les rendements, la production et l'offre en produits céréaliers dans les marchés. On note une difficile adaptation du système de production céréalière locale. Des actions interventions fortes doivent faites pour renforcer la sécurité alimentaire dans cette région. Mots clés : Crise cotonnière ; sécurité alimentaire ; filière ; céréales; Nord Cameroun.Cotton crisis and food security in Northern Cameroon Abstract Context and objective: Cotton has contributed to food security for longtime, because of its historic role in agricultural productivity. This study aims to provide some contribution to current debates on the effects of the crisis in the cotton industry on food security. Methodology and Results: Since 2000, the successive crises of the world market have strongly affected the cotton industry. Cereals have been the most affected by the cotton crisis, particularly in the supply of inputs (fertilizer). Faced with the unfavorable the cotton crop, farmers are diversifying their activities by shifting to cereals crops, but it is clear that the cultivated areas are still very small, the incomes are limited and decreasing. In this context, food security remains precarious and the risks of famine are permanent, this is due to the fact that the conditions for access to more complex inputs have become more expensive. 6222Conclusion and application of results: This situation directly affects the yield, production and supply of cereal products in the markets. There is a difficult adaptation of the local cereals farming system and Strong actions and interventions are needed to enhance food security in the region.

To better understand the key components of aquaculture production in periurban Africa, the fanning systems and profitability of five semi-intensive fish culture investments within 35 km of the centre of Yaoundé, Cameroon were subjected to economic analysis. Profitability of farms varied considerably. Two farmers lose money each year. Net returns to management on profitable farms ranged from a low of Fcfa 0.3 million, to a high of Fcfa 3.87 million (overall weighted average = Fcfa 0.99 million). Payback period for the initial investment on farms turning a profit ranges from five to 28 years. Only two farms can be considered solid investments. Nevertheless, the potential of aquaculture systems to be productive and profitable is apparent from the data collected. It is estimated that the five surveyed farms could increase their production from the current 7.6 to at least 44 tons of fish per annum, returning average profits of Fcfa 21.5 million, if basic principles offish culture were adopted.