On May 5 and 6, Embrapa Semi-arid Region (Petrolina, PE) welcomed a Senegalese mission from the Agency for Reforestation and the Great Green Wall (ASERGMV), which aimed to learn about the research center's experiences on sustainable food production and coping with droughts. The initiative also aimed to prospect opportunities and technologies to inform actions and activities in the so-called Great Green Wall. After a reception by Maria Auxiliadora Coêlho, the general head of Embrapa Semi-arid Region, the group composed of ten specialists from the African country went on a visit to Embrapa's Experimental Field in a Caatinga area. There they saw an agro-silvopastoral system in upland conditions. In that system, the water input is only to quench animals' thirst, and they graze in a native planted pasture, explained technology transfer analyst Sergio Azevedo, who accompanied the visit. At the site, the visitors also saw reserve forage options like Manihot glaziovii and buffel grass. In the Experimental Field, the mission got to know the "underground dam" and the "salvation barrier", rainwater collection and storage technologies, in addition to a technique to reuse graywater. The technologies were presented by researcher Roseli Freire, from Embrapa. The Senegalese mission also visited the property of one of Embrapa's partners in the town of Casa Nova, Bahia, where it was possible to visualize integrated production systems involving forage plants, pig and chicken farming, and goat breeding for dairy production. For Senegalese agronomist Aly Ndiaye, Head of the Green Sector division, the visit was very fruitful. “We saw technologies that can make all the difference, such as water harvesting techniques. As we have climate conditions that are very similar to those in the Brazilian semi-arid region, we see Embrapa's technologies as solutions to be adapted and implemented in Senegal,” he stated. GREEN WALL The great green wall consists in a barrier of vegetation that is being planted across the northern region of the African continent with the goal of restraining the advance of the Sahara desert.