Chapter 4 changes in price levels and employment levels. The next two sections examine in more detail the impact of changes in macroeconomic parameters on the availability of and access to food. 1.3 Macroeconomic parameters and food availability This section gives a brief overview of the major macroeconomic policy areas. These will be presented in greater detail later in the chapter. Macroeconomic policy and the decision to change certain crucial macroeconomic parameters can have both a direct impact on a country's food supply and an impact on the price incentives facing domestic producers. Direct effects are most likely to take place through changes in fiscal policy. Attempts to cut public expenditure may affect various agricultural support services, such as the provision of extension services, or the financing of public sector research initiatives, which could lead to improved crop varieties or more effective production techniques. Changes in the foreign exchange rate, usually a devaluation, can also have an effect on the provision of government services, to the extent that these services use imported goods, such as fuel, or imported capital equipment. This may be particularly important for the upkeep of state-owned infrastructure, such as roads and market places, all important in the decision to provide food products to the market, rather than keep them for household consumption. The prices farmers face are very important, both for the quantity of food produced domestically, but also for the amount offered on to the market, to meet the food demands of both urban and rural food-deficit households. These prices affect which commodities are produced, whether they are food or non-food crops, and the overall level of resources, land, labour and capital, invested in the agricultural sector. The foreign exchange rate determines the relative prices of traded goods versus non-traded goods (see Annexes 2A and 2B). An overvalued exchange rate tends to lead to higher prices for non-traded goods, relative to traded goods. Most agricultural commodities, whether food or non-food, are internationally traded goods, the only possible exception being very bulky, low value root crops, such as yams. However, a devaluation of the exchange rate will only improve the domestic supply of food commodities if two conditions hold. Firstly, producers must receive the benefit of the increased border price, rather than the increases accruing to traders or state marketing boards. Secondly, non-price factors in the agricultural sector must be conducive to increasing production. The foreign exchange rate will also influence the price of agricultural inputs such as fertilizer, pesticides and fuel for tractors. In addition the domestic price of internationally traded agricultural inputs and outputs can be distorted not just by an overvalued exchange rate but also by taxes, excise duties and trade controls imposed by national governments to raise revenue or protect certain domestic industries. Changes in these will affect the incentives facing producers and traders in the food sector, as will changes in the regulations affecting domestic markets. Monetary policy can affect the availability of credit to finance both the production of food and the purchase and storage of the annual harvest. A tight monetary policy can severely limit access to credit in the agricultural sector. However, if monetary policy is so lax that it fuels high levels of inflation, the longer-term impact on domestic food supply could also be - 113 -