Abstract
ABSTRACT Studies on rooting patterns of eight important multipurpose tree species demonstrated large variation in root depth and horizontal root spread 5 year after planting. The root depth varied between 1.01m (Acacia lenticularis L.) and 2.71m (Acacia nilotica (L.) Willd ex. Del.). Variation in horizontal root spread was 1.69m in Syzygium cumini (L.) and 7.70m in Pithecellobium dulce (Roxb.) Benth…Root spread exceeded the crown cover in Acacia nilotica (L.) Willd ex. Del.; Dalbergia sissoo (Roxb), Pithecellobium dulce (Roxb.) Benth Cassia fistula (L.) and Syzygium cumini (L.) Skeels. The length and diameter of the main root were greatest in Acacia nilotica (L.) Willd ex. Del. The maximum length and diameter of lateral roots were recorded in Albizia procera (Roxb.) Benth and Acacia lenticularis (L.) respectively. Total root biomass among different species accounted for between 16 and 37% of the total tree biomass. Analyses of the soil in a comparable site suggest that all these species have potential for conserving moisture and improving the fertility status of the soil, but when grown with agricultural crops would need pruning of their lateral roots.
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