Laboratory of Environment and Aquatic Biology, Department of Sciences and Environment Management, NANGUI ABROGOUA University, 02 BP 801 Abidjan 02, Côte d’Ivoire
The management of agro-pastoral waste remains a major concern in countries with high agricultural potential such as Côte d’Ivoire, due to the pollution of environmental components resulting from its poor management. This work aims to identify the different types of agro-pastoral waste generated in the departments of Soubré, Issia, Sassandra and Daloa. It also aims to provide information on the quantities of residues available and to identify the management method for this waste. To do this, some fields of observations were made to identify the different types of waste then based on agricultural statistical data from the Ministry. The quantities of agro-pastoral residues were estimated. A survey was also conducted from a survey sheet of agropastoral residue holders to identify the management method. It appears that in these localities, we find as crop residues, rice straw and husk, stalks, cobs and pobs of maize and cassava, bunches and palm shells, cocoa fibers and pods, shells of coffes. Livestock waste is made up of slurry, liquid manure, manure, bones, feathers and droppings and comes from animals such as cattle, sheep, goats, pigs and poultry. The quantities of crop residues estimated are 236,123.3 t/year in Daloa, 255,000 t/year in Issia, 290,000 t/year in Soubré and 198,221.4 t/year in Sassndra. Livestock waste is 728.8 t/year in Daloa, 3,606.1 t/year in Issia, 2,442.6 t/year in Soubré and 873.4 t/year in Sassndra. In these localities, 85% of planters abandon their residues in the fields, 12% of planters incinerate them in the open air and 3% compost them.