Beside the question concerning the manure load per hectare varying from one farm to another, many other elements have to be taken into account to analyse the improvement of the waste utilization policy. According to our investigations, manure is only spread on about one third of the agricultural area and only 14 p. 100 of the farmers is using it on their whole farmland area. According to these farmers, pig manure spreading is not possible on 7 p. 100 of the agricultural area because of

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... ns, topography or access to the lots. Moreover, the choice of the culture and the quantities to spread per type of culture are important factors. For some cereals with straw they do not exceed 50 n r , while for pasture or maize they may exceed 100 m !. Agricultural utilization of manure seems to remain the best solution and the methods used can still be improved. However, the storage capacities represent an important limiting factor for controlling the chronological distribution of manure according to cultures. II. -FEE D ING