A. K. Sharma , K. S. Negi , H. Y. Shukla , S. K. Pareek

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Brij Lal , G. P. Uttam , A. K. Sharma

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V. K. Jain , K. L. Arora , A. K. Sharma

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'Movement' is the term applied to shrinkage or swelling of seasoned wood in service due to fluctuations in atmospheric conditions. In this paper experimentally determined movement values of 6 Indian species between 32 and 93 per cent R.H. are reported. Amongst the limited number of species studied, teak showed the smallest movement value whereas Eucalyptus showed the largest movement value.

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Suman Kumar , A. K. Sharma

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Numerical classification of 8 forest soils belonging to orders Entisol, Inceptisol and Mollisol of Bhabar region of Nainital District in Uttar Pradesh was done. The taxonomic structure worked out using dissimilarity coefficients was presented using the clustering technique of Unweighted Pair Group Method using Arithmetic averages (UPGMA). The grouping of soils on the basis of numerical classification is in general, in conformity with their classification according to USDA Taxonomy. Departures from this general observation suggest a re-examination of existing taxonomic classification.

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N. K. Mathor , A. K. Sharma

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The Saline and Alkaline soils cover nearly 7 million ha of land occurring in as many as 14 states of India. It is indeed a challenging task to afforest these aresS since most of the indigenous and exotic species are not tolerant of soil alkalinity and salinity. Eucalyptus plantation programme has gained momentum during the recenl past under social forestry and farm forestry programmes. Eucalyptus are easy to propagate and require little care. Their rate of growth and biomass production is high and has attracted the attention of foresters as well as the general public. Barren lands have been considered best for planting fast growing adaptable exotic and indigenous spedes. Many Eucalyptus species and their salt resistant provenance may be of utmost importance for afforesting the salt affected and alkalinity affected soils in various regions in India. More genetical reseach is essential to locate suitable provenances to plant them in these salt and alkall affected areas. Eucalyptus species growing in the homoclimatic zones in Australia under saline and alkaline soils may prove of great help in successCully afforesting such tracts in various regions of India. The climatic, ecotypic and soil conditions of the environment where there species or their strains occur in Australia needs thorough study. Studies are also required to discover and locate identical locations in India for trying these species and strain of Eucalyplus. Eucalyptus comoldurensis is a potential species for this purpose and its new provenances and strains need exploratory research. It is advisable that under seed exchange programme more stress should be laid on procuring seeds of such available provenances of E. camaldulensis which occur in saine and alkaline solis in Australia. Inter specific hybridization for evolving salt and alkali resistant strains of Eucalyptus is expected to case the problem of afforestation in saline and alkaline solis.

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Alok Mathur , A. K. Sharma , T. R. Rathore , Om Prakash

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Soils and land use pattern were studied ia a part of Nainital Tarai and Bhabar Forest, Uttar Pradesh. The objectives of the study were to examine feasibility of using aerial photographs as base map for delineating soli boundaries and land use patterns, to characterise and classify the soils and to study their genisis. Reliable stereoscopic interpretation of aerial photographs for accurately delineating soil boundaries could be possible only for the areas which were either under cultivation or under new plantation. In remaining area under thick forest and grass vegetation only random field checks for studying morphological properties of soils were made. The boundaries of existing land use pattern could be easily delineated on aerial photographs and were correlated by field checks. Three distinct soil series namely, Baurkbatta, Dauli and Lalkuan were identified in the whole area but their mapping could be done only for area under cultivation. Characteristics, clasiffication and genesis of tbese series were studied. Baurkhatta series was a coarse loamy, mixed, hyperthermic Aquic Hapludoll. Daull was coarse loamy, mixed, hyperthermic. Mollie Aeric Hapiaquept and Laikuan was a loamy skeletal, mixed, hyperthermic Typic Eutrochrept. The local topography and to some extent kind of vegetation were the factors determining soli genesis. Of the total mapped area (1313.12 ha). Baurkhatta, Daull and Lalkuan series occupied 33.4,43.9 and 22.7 per cent, respectively. Of the major land uses, about 43 per cent area was under forests in which Eucalyptus, Sal and Sisam were the main tree species; 3.5 per cent area was under grassland where johnson, tiger and kamal were the main grasses; about 11 per cent area was under river bed and roads and rest 9.5 per cent was under cultivation where new plantation was being planned. Soils under the influence of grass vegetation had thicker, darker and higher base status horizons than those of soils under forest vegetation.

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Prashant Agarwal , Shikha Thakur , N. S. K. Harsh , A. K. sharma

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Pardeep Singh , A. K. Sharma

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This paper highlights the richness of medicinal herbs in the Padder valley of J & K state. The phytosociological studies were undertaken by stratified random sampling and recording of the herbs with medicinal value. A total of 34 medicinal herbs belonging to 18 families were recorded. Bunium periscum was the dominant herb in all the four sites of the study area.

Keywords

Medicinal Herbs, Phytosociology, Padder Valley

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Neeta Gera , A. K. Sharma

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Majority of the world's human population, especially in developing countries, depends on traditional medicine based on medicinal and aromatic plants (MAPs). Relatively few MAP species are cultivated. The great majority is still provided by collection from the wild. This trend is likely to continue over the long term due to numerous factors. Cultivation is not necessarily the most beneficial production system. Wild collection practices secure valuable income for many rural households, especially in developing countries. However, over-exploitation of MAPs, has been resulting in the loss of habitat and reduction in the regeneration of the MAP species. For these reasons, approaches to wild MAPs collection that balance the needs of local, regional, and international markets with the need for conservation and sustainable use are urgently needed. The present study was undertaken to develop safe harvesting limits for Andrographis paniculata Nees., Evolvulus alsinoides Linn., Phyllanthus urinaria Linn. and Rauvolfia serpentina Benth. occurring naturally in Sal forests of the Doon valley. Negative linear relationship was observed to exist between regeneration rate and harvesting intensity in all the four plant species at all the three sites. Threshold level of harvest adversely affected the regeneration of the above species.

Keywords

In-situ Conservation, Over Exploitation, Regeneration, Sustainable Management, Medicinal Plants, Sal Forests.

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A. K. Sharma

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Shubhra Bhandari ¹, N. S. K. Harsh ¹, A. K. Sharma ¹, L. Puni Mao ¹, Shikha Thakur ¹

Affiliations
1 Forest Pathology Division, Forest Research Institute, Dehradun, IN

Abstract

Medicinal plants play an important role in the development of potent therapeutic agents. Now-a-days large scale and commercialized cultivation has increased the number of diseases and their severity in medicinal plants. Among the bioagents fungal phytopathogens are found to cause certain foliar diseases which eventually play an important role in affecting overall health of the medicinal plants and their products. In the present study information about diseases of medicinal plants of Uttarakhand has been compiled to prepare a database.

Keywords

Medicinal Plants, Diseases, Fungi, Uttarakhand

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