Root Studies in a Eucalyptus Hybrid Plantation at Various Ages

Radial and vertical distribution of ischolar_main biomass (gm) of Eucalyptus hybrid trees at early (2 and 3 yrs) and advanced age (6 and 7 yrs) were studied. The total ischolar_main biomass decreased continuously with increasing radial distances from the tree base of all the soil depths. At early ages, the ischolar_mains of the trees were mostly concentrated near the base of the trees but in later ages the ischolar_main system tended to proliferate uniformly around the trees, The total ischolar_main biomass decreased continuously with increasing soil depth at all the radial distances and under all the age groups. At the age of 2 and 3 years the total biomass of medium (0.5 - 1.5 cm dia.) ischolar_mains was higher than other ischolar_main grades. But at the age of 6 and 7 years the total biomass of thick ischolar_mains was much higher than other ischolar_main grades.