The main objective of ILRI's Sustainable Production Systems Programme is to improve human welfare through the development of more productive and Sustainable crop-livestock sytems in developing countries. The programmes' focus is on market-oriented smallholder crop-livestock systems. In order to improve the productivity and sustainability of these systems, biological, environmental and socio-economic constraints have to be overcome. Therefore, opportunities for changing the systems in a sustainable manner have to be carefully identified and chosen.

One of the major constraints for domesticating widely used wild tree resources by local communities is the lack of adequate propagation techniques. In the case of Vitex doniana, seed propagation has usually been reported difficult and vegetative regeneration is rarely explored. To understand how stem cutting size or hormone application affect the regeneration and early growth ability in that species we used two categories of cutting diameter (1cmVitex doniana to reduce the pressure on wild tree population in Benin.