Phytotoxicity of sunflower (Helianthus annuus L.) and its allelopathic potentiality on growth and yield attributes of Parthenium hysterophorus

Recent developments in the weed science and allied aspects have involved several interdisciplinary approaches. In this context, indiscriminate use of herbicides for weed control has become a questionable subject, that besides controlling the weeds, the chemical herbicides are harmful in many ways to the soil, crops, other plants and the environment as a whole. To this end, pot and field experiments were conducted to test whether sunflower rhizosphere soil (SRSS) in pot and sunflower green manuring (SGM) in field experiments at various stages; 75, 90,105 and 120 days after sowing (DAS) can reduce Parthenium hysterophorus. Sunflower cv. Myhco was screened at various stages viz. 75, 90,105 and 120 days after sowing (DAS) through green manuring for field experiments and rhizosphere soil for pot experiments. Two cover crops, green gram (Vigna radiata) and pearl millet (Pennisetum glaucum) were used. In pot experiment, SRSS at various stages was compared with non sunflower rhizosphere soil (NSRSS). Growth and yield attributes of P. hysterophorus was compared between SGM and SGM along with cover crops and control in field experiments. Field experiments revealed that all growth and yield attributes of P. hysterophorus were inhibited maximum at 75 DAS of SGM with treatment SGM + pearl millet (PM) and the inhibitory effect decreased with increase of sunflower stage growing in the field. Pot experiments showed that SRSS at 75 DAS proved maximum inhibition to growth and yield attributes of P. hysterophorus as compared to higher stages. Allelochemicals were identified from sunflower through paper chromatography and subjected to spectroscopic analysis viz. ultraviolet, intra-red, nuclear  magnetic resonance and mass spectra etc., for confirmation. These results suggest that sunflower green manuring and its rhizosphere soil has herbicidal potential and may be utilized as biological control of weeds for sustainable agriculture and environmental safeguard.Key words: Green manuring, rhizosphere soil, allelochemicals, cover crops

Floristic Diversity and Indigenous Uses of Forest Vegetation of Dabka Watershed in Indian Central Himalaya

A species check list of flora is presented in and around Dabka watershed, District Nainital of Uttarakhand, together with preliminary Phytosociological data for the major species of communities. A total of 45 tree species, 09 shrubs and 32 species of grasses and herbs recorded. Results of quantitative sampling indicate that Adina cordifolia (IVI 66.26) species dominated in the watershed area. Other important woody associates include Quercus incana (IVI 26.74), Pinus roxburghii (IVI 14.64). The diversity range for tree layer was 3.16 followed by herbs (2.92) and then shrubs (1.84); all of the tree species were contagious distribution. Analysis of use diversity showed that the recorded species provide 8 Different uses to local communities. About 56% of the species are used for more than one use categories. Although some species have multiple uses, the average number of uses per species is three. The uses were placed under three major use categories, which had highest contribution of the total uses. These include food, medicinal and fuel/fodder/timber/ dye etc. use value of species shows that about 38% species use in medicinal purposes, 32% species used for edible purposes and 33% use as various purposes. The current work provide the baseline floristic and ecological data and documents the structure and composition of vegetation and also collect information about ethno-botanic used to explore the conservation status and folk medicinal knowledge of the surrounding peoples of the study area, for managers planners and policy makers to understand such simple method assessing the biodiversity of any potential area for conservation in any region. The finding suggest that, public awareness and community based management need to be encouraged at all levels in order to overcome the threats; further investigation into nutritional properties of all the species reported; study on the pharmacological attributes would help to understand their medicinal application. Furthermore urgent collection of germplasm from areas under human pressure is recommended

Conservation Priority Index of species, communities, and habitats for biodiversity conservation and their management planning: A case study in Gulmarg Wildlife Sanctuary, Kashmir Himalaya

The present study is an attempt to evaluate the Conservation Priority Index (CPI) of species, habitats, and communities for their conservation and management planning in the Kashmir Himalayas in India. The present study is an attempt to prioritize 361 plant species, 18 plant communities (10 within the forest zone and 08 within the alpine zone), and 07 habitats for conservation planning. Out of the total plant species recorded, 06 species were categorized as critically endangered, 20 endangered, 28 vulnerable, and 98 species to be near threatened. Amongst the forest and alpine communities, Abies pindrow community and Juniperus squamata-Rhododendron anthopogon mixed community showed the maximum CPI values. Amongst the habitats, dry habitats showed the maximum CPI in the sanctuary. The study found that the threatened species positively correlated with the native and endemic species indicating that these species were rigorously affected due to biotic and abiotic stresses. Based on the results of the present study, we propose a practical method for biodiversity conservation and management of protected areas. The approach employs a variety of qualitative and quantitative features to compute CPI in conjunction with phytosociological data. This kind of study will be immensely helpful to forest officials, policy makers, conservators, and researchers for planning better strategies to conserve and manage particular species, communities, and even habitats in protected areas

Traditional healthcare practices among the villages of Rawain valley, Uttarkashi, Uttarakhand, India

533-537A study on practice of traditional medicine was carried out among the people of Rawain valley, Uttarkashi. The results documented 63 plants to assess their therapeutic significance in managing various diseases in the villages of the valley. Fresh leaves, roots, fruits, bark, stems and some time whole plant are reported to be used for treatment of various ailments. Since, the knowledge of various medicinal plants being used is confined to mostly local healers, it is of utmost importance to document this knowledge for future generation, otherwise it will be lost forever with the death of local healers/knowledgeable person

Elevation gradients alter vegetation attributes in mountain ecosystems of eastern Himalaya, India

The present study describes how vegetation (the tree layer) is shaped along the elevation gradients in the eastern part of the Indian Himalayan Region. Various vegetation attributes, distribution, population structure, and regeneration patterns of 75 tree species belonging to 31 families were studied. Tree species richness shows a low plateau (peaked between 1,300–1,500 m) with a linearly decreasing pattern above 1,500 m asl. Ericaceae was found as the dominant family, followed by Lauraceae and Rosaceae. The distributional pattern of species-to-genera ratio (S/G) did not follow any particular trends, while β-diversity increased along the elevation gradient. The Margalef index of species richness, the Menheink index of species richness, and the Fisher alpha were found to be highest at lower altitudes (1,000–1,500 m), while the Simpson index was highest at middle altitudes (2,600–3,000 m). Random distribution was shown by maximum tree species (47.3%), followed by a contagious distribution (42.9%), and regular distribution (10.8%). The regeneration of tree species was found to be good with a healthier number of seedlings (10.2%), fair (43.5%), poor (30.3%), while 16% were observed not regenerating. Acer laevigatum (1,500 m), Prunus nepalensis (3,300 m), Viburnum sympodiale (3,400 m) were among the new regenerating species at the respective altitudes. The population structure of tree species in terms of proportion of individuals in seedlings, saplings, and the adult class varied in all the elevation transects. Species with better regeneration on upper distribution limits have been recognized as probable for upward movement

Promoting medicinal plants cultivation as a tool for biodiversity conservation and livelihood enhancement in Indian Himalaya

The present paper discusses the development of a participatory approach to promote medicinal and aromatic plant (MAP) cultivation as a tool for biodiversity conservation and livelihood enhancement in Champawat district of Uttarakhand state in India. People perception analysis revealed that farmers were dependent solely on the wild collection of MAPs before the initiation of the National Agriculture Innovation Project. However, they later engaged in cultivation practices. During the course of study, the propagation protocols of 11 selected MAPs of that area were developed and a cost-benefit analysis was performed. A series of meetings and exposure visits were organized and a memorandum of understanding was simultaneously signed between farmers and traders for promoting a buy-back system of MAPs. One hundred thirty-two farmers adopted MAP cultivation in 14 hectares of land. This approach provides opportunities for farmers to build skills, knowledge, and self confidence, and conserve MAP diversity in their natural habitat

The Sandflies of the Satluj river valley, Himachal Pradesh (India): some possible vectors of the parasite causing human cutaneous and visceral leishmaniases in this endemic focus

Background & objectives: The recently recognized endemic focus of leishmaniasis in Satluj rivervalley in Himachal Pradesh (India) lies in north-western Himalayas (30°N, 70°E). This endemicfocus of leishmaniasis appears peculiar where localized cutaneous leishmaniasis (LCL) co-existswith visceral leishmaniasis (VL), and Leishmania donovani is predominant pathogen for LCLwhereas only a few cases have been due to Leishmania tropica. This study was carried out to collectsandflies, identify and delineate their habitat and role in transmission of human leishmaniasis inthis endemic focus.Methods: During June 2003 to September 2007, 142 (M–22, F–120) sandflies were collected withaspirators from 10 endemic villages of Kinnaur and Shimla districts.Results & conclusion: Sixty-two of the identified sandflies caught belonged to the genus Phlebotomusspecies, including some species that are known to act as vectors of the parasites causing humanleishmaniasis. The Phlebotomus (Adlerius) chinensis longiductus (Parrot), 1928 (28 sandflies), P.major (8 sandflies), P. (Larroussius) kandelakii burneyi (Lewis), 1967 (8 sandflies) were identified.The identification of the main species of vector sandfly in the region is complicated because it isstill uncertain which Leishmania species cause(s) the local human leishmaniasis. Circumstantiallyit seems likely, however, that Phlebotomus (Adlerius) chinensis longiductus is the main vector.Other species found, such as P. major and P. (Larroussius) kandelakii burneyi, may also be responsiblefor some cases. A more elaborate study is recommended

Metastatic Basal Cell Carcinoma: A Biological Continuum of Basal Cell Carcinoma?

Basal cell carcinoma (BCC) accounts for 80% of all nonmelanoma skin cancers. Its metastasis is extremely rare, ranging between 0.0028 and 0.55 of all BCC cases. The usual metastasis to lymph nodes, lungs, bones, or skin is from the primary tumor situated in the head and neck region in nearly 85% cases. A 69-year-old male developed progressively increasing multiple, fleshy, indurated, and at places pigmented noduloulcerative plaques over back, chest, and left axillary area 4 years after wide surgical excision of a pathologically diagnosed basal cell carcinoma. The recurrence was diagnosed as infiltrative BCC and found metastasizing to skin, soft tissue and muscles, and pretracheal and axillary lymph nodes. Three cycles of chemotherapy comprising intravenous cisplatin (50 mg) and 5-florouracil (5-FU, 750 mg) on 2 consecutive days and repeated at every 21 days were effective. As it remains unclear whether metastatic BCC is itself a separate subset of basal cell carcinoma, we feel that early BCC localized at any site perhaps constitutes a biological continuum that may ultimately manifest with metastasis in some individuals and should be evaluated as such. Long-standing BCC is itself potentially at risk of recurrence/dissemination; it is imperative to diagnose and appropriately treat all BCC lesions at the earliest

Scientific Appraisal and Therapeutic Properties of Plants Utilized for Veterinary Care in Poonch District of Jammu and Kashmir, India

The importance of traditional and indigenous knowledge is acknowledged on a worldwide scale for its coexistence principles and sustainable use techniques. In view of this, the present study is an attempt to document the ethno-veterinary plants used by the tribal communities of Western Himalaya. This study also provides the scientific validation of herbal medicines used in ethno-veterinary practices through a reverse pharmacological approach. A total of 59 informants were selected through a non-probability sampling method. Detailed information on the medicinal plants used in ethno-veterinary practices along with their habits and habitats, part/s used, remedy preparation methods, additives/ingredients used during preparation and administration, dosages administered, and route of administration was collected. Data was analyzed for the Relative Frequency of Citations (RFC), Use Values (UV), Informant Consensus Factor (ICF), and Jaccard Index (JI). Further, a reverse pharmacological approach was used for scientific validations of the documented herbal knowledge of plant species. During the study, 56 plant species belonging to 54 genera and 39 families were documented. Asteraceae was the dominant family followed by Lamiaceae, Amaranthaceae and Fabaceae. Life forms were dominated by herbaceous species and leaves were the most common plant parts used. The highest Relative Frequency of Citations (RFC) and Use Values (UV) were recorded for Brassica rapa L. (Brassicaceae). The Pearson correlation coefficient between RFC and UV shows a strong positive correlation between the proportion of uses of a plant species within a sample of informants and the number of times that a particular use of a plant species was mentioned by the informant. Studies of the biological activity of ethno-veterinary plants can provide clues of promising leads for the isolation and identification of useful compounds that may be developed into pharmaceuticals for human welfare