Afforestation trenches etch geometric patterns for kilometres across the land. Each trench can store up to one cubic metre of water. - - Keita Integrated Development Project: GCP/NER/028/ITA. The Keita Integrated Development Project was launched in 1984 following an accord between the governments of Niger and Italy (Project GCP/NER/028/ITA). The Food and Agriculture Organization of the United Nations has been in charge of executing the project