Introduction
The success of agroforestry,tree farming and reforestation initiatives in many developing countries is often constrained by
the lack of planting materials and low quality of planting stock
(Aalbaek, 2001;Noordwijketal.,2003;Harrisonetal.,2008a). The
lack of planting materials and low quality of planting stock can
be attributed to a plethora of factors including the lack of technical skills to produce high quality seedlings,the limited access
of seedling producers to high quality germplasm,the absence of
incentives to produce high quality planting stock,and the lack of
appreciation of tree farmers on the importance of seedling quality