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G. S. Goraya , Mohinder Pal , K. S. Kapoor , Vaneet Jishtu

Abstract

Hill bamboos, locally called 'Nirgal', form a very important vegetation component in the Sutlej catchment falling under the Rampur Forest Division and Kotgarh Forest Division of Shimla District in Himachal Pradesh. Two species of this bamboo group viz. Sinarundinaria falcata and Thamnocalamus spathiflorus have been reported from these forest divisions. This paper, on the basis of empirical data, highlights the socio-economic significance of these bamboo species in the study area. Major threats to the wild populations of these species and conservation strategies for better management of this resource have also been discussed in this paper.

Keywords

Hill Bamboos, Sinarundinaria falcata, Thamnocalamus spathiflorus, Socio-economic
Significance, Protection, Production, Utilization, Himachal Pradesh

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G. S. Goraya , Vaneet Jishtu , K. S. Kapoor , Mohinder Pal

Abstract

Montane bamboos are represented in the western-Himalayan State of Himachal Pradesh by two species i.e. Arundinaria falcata and Arundinaria spathiflora. Both these species, having great ecological and local socio-economic significance, have gregariously flowered across the State during the year 2000 and 2001 respectively. This paper documents specie-wise extent of flowering of these bamboo species in the Sutlej catchment of the State.

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Ranjeet Singh , G. S. Goraya , Charan Singh , Shalindra Kumar , Surinder Kumar

Abstract

Chir pine (Pinus roxburghii Sargent) is a very important indigenous conifer species of lower hills of Himalayas and the Shiwalik mountain range. A request to study the causes of mortality of Chir pine in Morni Forest Range under the Pinjore Forest Division in Haryana was received from the Conservator of Forests and the same have been investigated. It has been observed that the forest tract has been badly abused in past due to high biotic pressure , recurrent fires and heavy resin tapping by French Cup and Lip method. The resin tapping in the said forest has been stopped since 1983. However , the scars of the past injuries have left a permanent mark on these trees , which have over the years and due to recurrent fires lost their viability and have become prone to heavy insect borers infestation. So the immediate cause of current mortality in this area has been found to be the heavy infestation of insect borers. The study showed that these affected trees were severely attacked by four types of insect borers viz. Shpaenoptera aterrima , Cryptorhynchus rufescens , Platypus biformis and Polygrphus longifolia , which badly damaged the bark and bast and girdled the tree. Various insect pest management strategies including the insecticidal application were recommended for protecting the trees from the insect borers and their by protect them from mortality.

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A. Karthikeyan , G. S. Goraya , Shailendra Kumar , S. Kalia

Abstract

A study has been undertaken in the diseased Cedrus deodara (Roxb.) L.Don (Deodar) forests I\t Chail (Himachal Pradesh) to find out the causative factor of the disease and their mortality. The infected trees showed yellowing, shortening needles and the causative pathogen was identified as Phytophora cinnamomi which is causing ischolar_main rot disease. The rhizosphere soil samples of the disease-affected trees showed higher soil moisture due to blockage of water conductivity. The results of the study explicit that the fungus causes water stress in the diseased trees because of ischolar_main rot. Under favourable moisture conditions the activity of the pathogen becomes vigorous. However, studies are under investigation to control the disease.

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K. Ravikumar , G. S. Goraya

Abstract

Hopea canarensis Hole has been rediscovered from the type locality after a lapse of nearly 80 years and is described here in detail with notes on phenology, distribution and associated plants. The differences between Hopea canarensis and two closely allied Hopea species are tabulated.

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Gajendra Singh , Ishwari Datt Rai , G. S. Rawat , G. S. Goraya

Abstract

No Abstract

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