Manual for in situ grafting
In the Sahel region, producers’ strategies for strengthening their resilience to climate change include, among other things, the deliberate preservation of selected trees and shrubs in annual crop fields in order to increase the density of trees in agroforestry parks . Such trees produce fruit, vegetables or tubers which are very useful in times of food shortage, fodder or mulch on encrusted and compacted soils to improve the organic matter content and soil structure. This practice, known as assisted natural regeneration (RNA) reduces the frequency and cost of planting trees which, in the Sahelian context, is risky and often doomed to failure. RNA is a rapid restoration and regreening technique, inexpensive and sustainable which involves the regeneration and systematic management of trees and shrubs from tree stumps, roots and seed banks.