Abstract
A survey of nodulation was made among 28 species of tree legumes comprising 9, members of Caesalpinaceae, 12 of Mimosaceae and 7 of Papilionaceae. The percentage of nodulation found in Caesalpinaceae, Mimosaceac and Papilionaceae were 11.1 %, 100 % and 100 %respectively. Caesalpinoid genera viz, Bauhinia„ Delonix, Parkinsonia and Tamarindus were found non-nodulating . All the twenty eight species including eight non-nodulated and twenty nodulated were analysed for their nitrogen contents. The role of nodulated and non nodulated trees in improving soil fertility of derelict and denuded lands of Sindh has been discussed.
