Soil Suitability for Eucalyptus Hybrid (Syn. E. Tereticornis or Mysore Gum) Plantations in Tarai and Bhabar Region of Uttar Pradesh

The result of a soil investigation undertaken in 1967-68 in Tarai and Bhabar and Bijnor Plantation Divisions to evaluate the soil conditions supporting good and inferior growth of Eucalyptus hybrid (Syn. E. tereticornis or Mysore gum) of Chickbalapur origin bave been reported. The morphological characteristics of soil profile particularly its texture, stoniness and drainage together with the associated effect on moisture regime and aeration are of great importance in influencing the growth of this species. A bhabar soil with coarse texture and excessive bouldery sub-soil having deficient moisture supply is not favourable for good growth, but the situation is improved where a bhabar soil has silty loam texture and is associated with somewhat higher water table. On the other hand, a tarai soil without stones but having adequate moisture availability and satisfactory drainage provides a more congenial environment. This species however, appears to exhibit inferior growth on a tarai soil which has impeded sub-soil drainage. Calcareous soil with slight alkaline reaction and presence of lime nodules in a diffused form does not appear to be harmful under the local conditions. The nutrient supply in the soil is moderate and is not critical in this area. In view of varied soil conditions met with in the region, the importance of a proper selection of sites for raising successful Eucalyptus hybrid plantations capable of adequate economic returns has been emphasized, utilising remaining sites for other species and purposes including retention of unplanted belts of unsuitable areas for preservation of indigenous flora and fauna as an additional measure towards nature conservation.