Informatics Publishing Limited

Gopichand , R. D. Singh

Abstract

The study was conducted in mid-hill conditions of Palampur in the Indian Western Himalayas with objective to develop agrotechniques for fast growing fuel-wood species. At 24 months after planting (MAP), the effect of fertilizers was more evident in terms of vertical growth than radial growth. The plant height showed an increasing trend with increase in doses of fertilizer. The maximum plant height was recorded in Eucalyptus hybrid followed by Populus deltoides, while Salix tetrasperma showed the poorest vertical growth (Table 4). In terms of stem diameter, Eucalyptus hybrid was the best species followed by Grevillea robusta and Trewia nudiflora (Table 5). Application of N:P₂O₅:K₂O::150:75:75 kg/ha provided thicker stem in comparison of the lower fertilizer doses. At 36 MAP, G. robusta produced significantly highest vertical growth followed by Jacaranda acutifolia and Eucalyptus hybrid, while Bauhinia variegata showed significantly highest radial growth followed by Eucalyptus and G. robusta. In all the species, excepting G. robusta, Toona ciliata and Morus alba, the lowest fertilizer dose (50:25:25 kg/ha) provided significantly highest vertical and radial growth rate, at 36 MAP. At 36 MAP, significantly highest fresh and dry biomass (oven dry) per plant was produced by Eucalyptus followed by G. robusta and Melia azedarach. The maximum dry weight (62%) was recorded in case of M. alba. At 72 MAP, the significantly highest fresh and dry weight per plant were recorded in Eucalyptus followed by G. robusta, T. ciliata and M. azedarach. Amongst the plants not treated with fertilizers, the highest fresh and dry weight was recorded in G. robusta planted at 1 m x 1 m spacing. The same species when planted closer at 1 m x 0.71 m spacing was comparable to Eucalyptus. Amongst all the test species, G. robusta had highest calorific value.

Keywords

Short Rotation High Density Plantation, Vertical Growth, Radial Growth, Calorific
Value, Western Himalayas

Full Text

     

Gopichand , R. D. Singh , Amit Kumar , Ramjee Lal Meena , P. S. Ahuja

Abstract

No abstract

Full Text

     

Gopichand , R.d. Singh , Ramjee Lal Meena , K. N. Singh , Amit Kumar

Abstract

Rheum australe D. Don. Syn R. emodi Wall ex Meissan, locally known as Himalayan rhubarb, rhubarb ischolar_main, belong to family Polygonaceae. R. australe is an endangered medicinal plant species in Indian Himalaya. Study was conducted to evaluate effect performance of IAA, IBA, NAA and GA₃ at three concentrations viz., 50, 100 and 200 mg/l on in terms of rate of germination of R. australe seeds. Observations were also recorded on days taken for initiation of germination, seed germination percentage, shoot length of the seedlings and number of leaves per seedling. Significantly higher seed germination was recorded in seeds treated with IBA 200 mg/1 followed by NAA (200 mg/l) and GA₃ (l00 and 200 mg/l).

Keywords

Rheum austral, R. emodi, Seed Germination, Seedlings

Full Text