R. P. Singh , D. V. Negi , Prakash Chand

Abstract

The present study was conducted in the cold desert areas ofSpiti Valley in the State of Himachal Pradesh. Rosa webbiana, seeds should be treated with concentrated sulphuric acid for 20 minutes duration to enhance its germination. It can be propagated by stem cutting and ischolar_main suckers. Stem and branches contribute maximum to the total biomass followed by ischolar_main and leaves in that order. Approximately twenty shoots sprout from single ischolar_main stock and form a colony over barren slopes which checks the erosion. Total biomass on dry weight basis was 5.42 kg/plant and energy ranged from 3.1 to 4.2 K.cal/g dry weight. An average bush accumulates 20615 K.cal of energy per plant.

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R. P. Singh , D. V. Negi

Abstract

In search of promising clones suited to lower areas of Himachal Pradesh, a nursery trial of twenty nine exotic clones received from Forest Research Centre, Lal Kuan (Uttar Pradesh Forest Department) was conducted. Populus deltoides clones 247/84,75/84,29/82,200/84 and 51/84 and American clones 110702, S7Cl, ST-72 and 64-243-1 were proved to be the best suited for this tract. These clones are being further tested in different nurseries, situated in different agro-climatic conditions, of Conifers Research Centre, Shimla for Large scale plantation programme.

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R. P. Singh , N. Bahar , D. V. Negi

Abstract

The effect of grazing on soil erosion in forest ecosystem was observed. It was seen that the grazed plot had approximately seven time more than soil loss per annum compared to ungrazed (control) plot under Cedrus deodara forest. The amounts of all the nutrients loss was recorded several times more in grazed plot than that of control. The amount of litterfall was recorded 3.3 times more annually in control stand corresponding to grazed stand.

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