Chapter 5 As a result of all these effects, overall food security will improve. Improvements in the performance of the marketing system have the same effect as shown in Figure 5.2 (see section 5 and Figure A-11, Annex 1). The above examples show how existing food deficits can be reduced and overall food security be improved through direct interventions in the food sub-sector, aiming at increased food production and domestic supplies. This does, however, not mean that policies to increase production and supplies should be confined to the food-subsector. Food security is not necessarily a matter of self-sufficiency in food production. If a country or region has a comparative advantage in producing other than food crops, the economic benefits may be larger and food security could possibly better enhanced by promoting non-food crops for export. The income earned and the foreign exchange generated through the sale of non-food crops may buy more food than could alternatively be produced locally. In this case, through enhancing non-food production, the food deficits will be reduced and food security improved through increased access to food, rather than by increased food production and domestic supplies. Whether food or non-food production is more profitable and more effective in achieving food security depends on various factors, such as the existing land use system (including socio- economic differences in production), the world market situation, the rural infrastructure and marketing system for food and export crops. All these factors need to be carefully considered when a strategy to agricultural sector reform and food security is designed. In general it is assumed that the removal of price and market rigidities as result of structural adjustment measures will automatically lead to appropriate price signals for producers to decide on the most efficient allocation of the production resources (see Annex 2A, but also take note of the critics of the free market economy model as raised in section 5 of the same annex). 2.2 Stabilising food supplies Supply instability is a main cause of temporary food insecurity. This may be a result of acute production shortfalls due to unfavourable weather conditions, or may be characteristic of inter- and intra-seasonal variations in food supply, and they may critically affect the country as a whole, certain areas or specific population groups (e.g. people living in remote or drought prone areas.) Some of the measures mentioned under section 2.1 above will also have positive effects in terms of stabilising food supplies. This is particularly true of measures aimed at improving rural infrastructure, research, storage and food marketing such as: * irrigation which will reduce susceptibility to rainfall variations; * research into drought/pest resistant varieties; * investments in storage on farm, local, regional and national levels; * technical improvements to reduce storage losses;