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Zeitschriftenartikel zum Thema „Dooars“

Autor: Grafiati

Veröffentlicht am 18. Mai 2024

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1

Mukherjee, Mainak, Sourav Chakraborty, Sahadeb Sarkar, Sumedha Saha, Soumya Majumder, Arindam Ghosh und Malay Bhattacharya. „Soil Nutritional Status of Tea Plantations in Plains of Sub Himalayan West Bengal, India“. Current Agriculture Research Journal 8, Nr. 3 (28.12.2020): 239–46. http://dx.doi.org/10.12944/carj.8.3.10.

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Tea is the most consumed beverages after water. In Terai and Dooars region of sub Himalayan West Bengal, India, tea plantations are around 150 years. Exploitation of tea garden soil over centuries has led to decline in soil fertility and crop productivity after all initiatives of external inputs. As nutrients play a crucial role in quality and quantity of manufactured tea, the present initiative has been designed to quantify the soil nutrient status of tea growing Terai and Dooars region. 79.62% (Terai) and 84.72% (Dooars) of the soil samples were found to have normal pH. 47.21% (Terai) and 49.3% (Dooars) of soil samples was found to have normal organic carbon. 12.03% and 20.82% of soil from Terai and Dooars showed low total nitrogen. Both the organic carbon and nitrogen in soil are positively correlated. Phosphorus (as P2O5) content of soil is extremely site and depth specific. Almost all samples of the study area showed high potassium (as K2O) content. Monoculture, change in rainfall pattern and inorganic additives have contributed enormous stress to soil but despite of all these odds the overall nutritional richness of these tea growing regions seems to be satisfactory.

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2

Adhikary, Bhusan. „A COMPARATIVE STUDY OF HEMOGLOBIN STATUS AMONG TRIBAL INHABITANTS OF DOOARS IN NORTH BENGAL“. International Journal of Advanced Research 10, Nr. 01 (31.01.2022): 1206–9. http://dx.doi.org/10.21474/ijar01/14165.

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The study was carried out to know the relationship of blood hemoglobin status among tribal inhabitants of Dooars. For the present study two hundred and forty male ranging between 17 to 23 years from four different tribes of Dooars were selected randomly from the whole population of the selected tribes.

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3

Chatterjee, Suparna. „Women Workers in the Dooars Tea Gardens“. Contemporary Voice of Dalit 3, Nr. 2 (Juli 2010): 213–26. http://dx.doi.org/10.1177/0974354520100206.

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4

Roy, Nirmal Chandra, und Debasish Biswas. „Closed Tea Estates: A Case Study of the Dooars Region of West Bengal, India“. Vision: The Journal of Business Perspective 22, Nr. 3 (30.07.2018): 329–34. http://dx.doi.org/10.1177/0972262918788231.

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Since the end of the nineteenth century, it has been found that there has been a steady trend of the closure of tea estates in the sub-Himalayan region of Bengal. Besides that, a number of tea estates in the same region have not been operating properly. All these have made workers vulnerable. But this tea-producing region is monadic, and it produced during 2016–2017 358.53 million kg of tea; whereas the total production of India was 1,250.49 million kg. Evidence shows that 16 tea estates of the Duncan Group alone had been virtually closed in 2015 in the Dooars region. As a consequence, nearly 20,000 workers became jobless and subsequently several workers of the closed tea estates died of starvation and malnutrition. Further, some records have mentioned that from 2000 to 2015, 1,400 people had died in 17 closed tea estates in West Bengal. A lion’s portion of deaths has occurred in the Dooars region. In this case, an attempt has been made to unveil the root causes of the closure of tea estates located in the Dooars region in West Bengal.

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5

Chanda, Ishita, Manohar Sajnani und Vanessa G. B. Gowreesunkar. „Smart Sustainable Ecotourism in Dooars, India: Challenges and Opportunities“. International Journal of Sustainable Development and Planning 18, Nr. 10 (31.10.2023): 3287–95. http://dx.doi.org/10.18280/ijsdp.181028.

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6

Guria, Srikanta. „MORPHOFUNCTIONAL ANALYSIS OF HEMOCYTES IN INSECTS (ORTHOPTERA) COLLECTED FROM MURTI AND ADJOINING AREAS (DOOARS) AND DIFFERENT AGRICULTURAL FIELDS OF NORTH 24 PARGANAS, WEST BENGAL“. Journal of Advanced Scientific Research 12, Nr. 04 Suppl 1 (31.12.2021): 321–23. http://dx.doi.org/10.55218/jasr.s1202112439.

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A small village named Murti is situated along the bank of river Murti in Dooars. The adjacent area of murti is rich in insect biodiversity. Knowledge on the diversity and the role of Orthopteran insects in tea ecosystem of West Bengal including Dooars and Terai is very scanty. Hemocytes are the chief immune cells of insects. The number and shape of hemocytes can change rapidly in response to environmental stress and pollution. Grasshopper (Orthoptera) species were collected from Murti and adjoining areas and from different agricultural fields of North 24 Parganas (West Bengal). Hemolymph was stained by Giemsa, and Neutral Red. Cellular morphology and phagocytosis was examined. Normal cell shape and behavioural activities like phagocytosis, cell-cell fusion was observed in insects collected from Murti, and adjoining areas of Dooars. But in case of insect hemocytes isolated from different agricultural fields of North 24 Parganas and its adjacent sites showed altered shape and different phases of cell death like degeneration of nuclei, formation of membrane blebs and rupture of plasma membrane. Toxic environmental pollutants may be responsible for alteration of hemocytes size and function which may effect on biodiversity. Hemocytes can be used as an effective bio-indicator by which the health of the ecosystem can be screened.

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7

Roy, Somnath, Ananda Mukhopadhyay und Guruswami Gurusubramanian. „The Synergists Action of Piperonyl Butoxide on Toxicity of Certain Insecticides Applied Against Helopeltis Theivora Waterhouse (Heteroptera: Miridae) in the Dooars Tea Plantations of North Bengal, India“. Journal of Plant Protection Research 49, Nr. 2 (01.06.2009): 225–28. http://dx.doi.org/10.2478/v10045-009-0034-0.

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The Synergists Action of Piperonyl Butoxide on Toxicity of Certain Insecticides Applied AgainstHelopeltis TheivoraWaterhouse (Heteroptera: Miridae) in the Dooars Tea Plantations of North Bengal, IndiaHigher efficacy of mixture of insecticides with synergists piperonyl butoxide (PB) was reported in controlling in the Dooars population ofHelopeltis theivoraWaterhouse. Therefore, the use of synergists as one of the countermeasures against the insecticide resistance problem ofH. theivorais recommended. The combination of deltamethrin +PB (piperonyl butoxide), quinalphos +PB and imidacloprid +PB showed 44.60, 16.01 and 11.14 folds increase of toxicity (synergistic ratio) than the respective insecticide alone. Piperonyl butoxide acted as an oxidase inhibitor. The addition of PB to some extent suppressed the resistance ofH. theivorato these insecticides, suggesting that the P450 enzyme complex may be involved in the mechanism of toxicity.

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8

Rudra, Swapan Kumar, und Ananda Mukhopadhyay. „Mosquito species composition of the Dooars of West Bengal, India“. Proceedings of the Zoological Society 63, Nr. 1 (Juni 2010): 21–25. http://dx.doi.org/10.1007/s12595-010-0003-7.

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9

Saha, Sumana, Hüseyin Özdikmen, Manish Kanti Biswas und Dinendra Raychaudhuri. „Exploring Flat Faced Longhorn Beetles (Cerambycidae: Lamiinae) from the Reserve Forests of Dooars, West Bengal, India“. ISRN Entomology 2013 (17.09.2013): 1–8. http://dx.doi.org/10.1155/2013/737193.

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The present study deals with 29 lamiid species under 21 genera of Dooars, West Bengal, India. These include 4 newly recorded species, namely, Macrochenus isabellinus Aurivillius, Aesopida malasiaca Thomson, Pterolophia (Hylobrotus) lateralis Gahan and Nupserha quadrioculata (Thunberg) from India while 16 others (marked by ●) from the state.

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10

KUMAR, ANANT. „A new variety of Brachystemma calycinum (Caryophyllaceae) from West Bengal, India with notes on its typification“. Phytotaxa 598, Nr. 3 (25.05.2023): 259–63. http://dx.doi.org/10.11646/phytotaxa.598.3.8.

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Brachystemma (Caryophyllaceae) is an asian monotypic genus including B. calycinum. As part of field survey in Dooars and Darjeeling–Sikkim Himalaya (India), a population ascribed to this species was found. Since the different morphology, a new variety has been described and illustrated. Moreover, the typification of the name B. calycinum is also discussed.

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11

Das, Uday, und Rafiqul Islam. „LIVELIHOOD REALISM: A REVIEW ON CLOSED TEA GARDENS OF DOOARS, WEST BENGAL“. International Journal of Research -GRANTHAALAYAH 9, Nr. 2 (23.02.2021): 72–80. http://dx.doi.org/10.29121/granthaalayah.v9.i2.2021.3355.

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The paper is an attempt to understanding the ongoing livelihood realities in closed/ abandoned tea garden of Bengal-Dooars (Jalpaiguri and Alipurduar). The region produced large scale good qualities tea in more than 150 organised tea estates. Tea industry of North Bengal has been trashily affected by global economic quandary and local constraints. Many tea estates failed to manage the shock; the management closed many gardens. The garden closure and work shutdown have been produced a livelihood disaster. A school drop-out, child trafficking, Child labour mobility, rally of hunger and starvation death and extreme poverty is the ongoing livelihood phenomena in labour colonies of closed tea gardens. The present paper has discussed the particulars (housing, drinking water, medical facilities, education, liabilities etc.) of five closed gardens by using the data from TG Survey Final Report, Labour Commissionerate, Govt. of West Bengal and Tea Board of India.

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12

Barman, Jonmenjoy, Subhom Narjinary und Sankar Biswas. „Elephant Habitat Suitability Analysis of Alipurduar District, West Bengal Using Geospatial Technology“. Nature Environment and Pollution Technology 21, Nr. 4 (01.12.2022): 1705–12. http://dx.doi.org/10.46488/nept.2022.v21i04.024.

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In India’s Tarai-Dooars region, elephants are the most common wildlife species. The man-wildlife conflict has arisen as a result of forest scarcity, forest fragmentation, global climate change, land use land cover change in the Dooars region, and encroachment into forest life. Although the Wildlife Protection Act of 1972 addressed the conservation of wild animals, the number of wild elephants in West Bengal was constantly changing. The goal of this project is to use geospatial technologies to determine wild elephant habitat suitability zones in West Bengal’s Alipurduar area. The first stage in the conservation and management of wild elephants is to determine their habitat suitability. To assess the result, the various habitat suitability factors/parameters of wild elephants were integrated through weighted overlay analysis in the ArcGIS environment. The result shows that the central part of the district - the Buxa forest area, holds the largest suitable environment for elephant habitat. The rest of the study area can be categorized as a medium habitat suitable area excluding some settlements and built-up areas. The authors hope the result will help the proper management and conservation of wild elephants.

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13

Ghosh, Gour Sundar, und Prasenjit Deb. „Attitude of School Teachers of Dooars Region of West Bengal towards Elementary Education“. IRA International Journal of Education and Multidisciplinary Studies (ISSN 2455-2526) 6, Nr. 3 (28.03.2017): 209. http://dx.doi.org/10.21013/jems.v6.n3.p1.

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<em>Teachers are one of the most important components in education system. Apart from teaching learning, teachers are directly involved towards mental, physical, moral, spiritual, and psycho-social development of the students. This study conducted in Jalpaiguri, a Sarva Shiksha Mission (SSM) district of West Bengal to evaluate and assess the level of achievement earned by the Elementary Teachers from the SSM. While the level of attitude of school teachers towards elementary education (Y) had been the dependent/predictor character (Y), the contributory factors had been Age (X<sub>1</sub>), Education of teachers (X<sub>2</sub>), Training Experience (X<sub>3</sub>), Year of Experience (X<sub>4</sub>), Engagement in other activity (X<sub>5</sub>), Family Income (X<sub>6</sub>), Social Participation (X<sub>7</sub>), Interaction with Head Teacher (X<sub>8</sub>), Interaction with School Inspectors (X<sub>9</sub>), Interaction with SSM Personnel (X<sub>10</sub>), Organizational Interfacing (X<sub>11</sub>), Involvement in SSM activities (X<sub>12</sub>), Value Judgement (X<sub>13</sub>), Response about SSM activities (X<sub>14</sub>), Use of TL Materials (X<sub>15</sub>), Exposures to Media (X<sub>16</sub>), and Opinion about present education system (X<sub>17</sub>). The statistical analysis illustrated that while the variables: like (1) Education of teachers (X<sub>2</sub>), Engagement in other activity (X<sub>5</sub>), Family Income (X<sub>6</sub>), Social Participation (X<sub>7</sub>), Interaction with Head Teacher (X<sub>8</sub>), Use of TL Materials (X<sub>15</sub>) had wielded a substantive effect on the determining level of attitude of school teachers towards elementary education (Y) and (2) variables: like Year of Experience (X4),</em><em> Interaction with Head Teacher (X<sub>8</sub>) have been found to exercise significant regressional effect on the level of attitude of school teachers towards elementary education (Y).</em>

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14

DAWN, PROSENJIT. „Description of the last instar larva of Calicnemia eximia (Selys, 1863) (Odonata: Platycnemididae) from West Bengal, India“. Zootaxa 4657, Nr. 1 (15.08.2019): 183–87. http://dx.doi.org/10.11646/zootaxa.4657.1.10.

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The final instar larva of Calicnemia eximia (Selys, 1863) is described for the first time from a grass-bed under a waterfall in Buxa Tiger Reserve, Dooars of Darjeeling Himalayas. The larva shows a semi terrestrial nature like other congeneres but is unique in having no premental setae and a longer labium. One C. miniata (Selys, 1886) larva was also collected from the same locality and is compared with the C. eximia larva here.

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15

Mallik, Piyashee, und Tuhin Ghosh. „Impact of climate on tea production: a study of the Dooars region in India“. Theoretical and Applied Climatology 147, Nr. 1-2 (09.11.2021): 559–73. http://dx.doi.org/10.1007/s00704-021-03848-x.

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16

Pal, Gouri Sankar, Shubhranil Brahma und Niladri Hazra. „One new species and new records of three species of the genus Forcipomyia Meigen, 1818 (Diptera, Ceratopogonidae) from West Bengal, India“. Evolutionary Systematics 7, Nr. 1 (09.02.2023): 83–89. http://dx.doi.org/10.3897/evolsyst.7.97331.

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Forcipomyia (Forcipomyia) hispida, a new species from the Dooars region of West Bengal, is described and illustrated here based on morphological and molecular data. Among the three newly recorded species, Forcipomyia (Dycea) hamoni de Meillon was known from the Eastern Himalayas while F. (Euprojoannisia) calamistrata Debenham & Wirth and F. (E.) fuscimana (Kieffer) were from the Gangetic plains of West Bengal. The supplementary descriptions and illustrations of the known species are also presented here. DNA barcoding of two newly recorded species of the subgenus Euprojoannisia Brèthes is also obtained for the first time.

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17

Mazumder, Mallika, und Anup Kumar Sarkar. „Ethnobotanical survey of indigenous leafy vegetables consumed in rural areas of Terai-Dooars region of West Bengal, India“. Journal of Threatened Taxa 11, Nr. 12 (26.09.2019): 14612–18. http://dx.doi.org/10.11609/jott.5039.11.12.14612-14618.

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There is always a need for novel, high quality, functional and inexpensive foods among consumers in the global markets. Leafy vegetables can fulfill such needs. Leafy vegetables are now used worldwide as food for their nutritional and medicinal values. In the present work an ethnobotanical survey was carried out on the utilization of edible plants by local communities of the Terai-Dooars Region of West Bengal. The information has been documented by interviewing traditional farmers, herbalists, various older men and women following different ethnobotanical methods. A total of 103 plant species under 44 families with their short botanical description, use, range of demands and cultivation status have been documented.

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18

Sarkar, Subhankar Kumar, Sumana Saha und Dinendra Raychaudhuri. „Taxonomy of Oxycetonia Arrow, 1910 (Scarabaeidae: Cetoniinae) of Buxa Tiger Reserve, Dooars, West Bengal, India“. Journal of Entomological Research 42, Nr. 1 (2018): 121. http://dx.doi.org/10.5958/0974-4576.2018.00021.x.

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19

Bishnu, Avhik, Kalyan Chakrabarti, Ashis Chakraborty und Tapan Saha. „Pesticide residue level in tea ecosystems of Hill and Dooars regions of West Bengal, India“. Environmental Monitoring and Assessment 149, Nr. 1-4 (20.02.2008): 457–64. http://dx.doi.org/10.1007/s10661-008-0222-9.

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20

PAL, GOURI SANKAR, und NILADRI HAZRA. „Three new species of Forcipomyia (Lepidohelea) (Diptera: Ceratopogonidae) from West Bengal, India“. Zootaxa 5419, Nr. 3 (07.03.2024): 348–60. http://dx.doi.org/10.11646/zootaxa.5419.3.2.

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Three new species of the subgenus Lepidohelea Kieffer, 1917 of the genus Forcipomyia were described from the northern region of West Bengal based on morphological data. Forcipomyia (L.) inflatistyla sp. n. was collected from the Dooars region (Jayanti, near the Core area of Buxa Tiger Reserve), while two new species F. (L.) ranula and F. (L.) sulcoa were procured from Kalimpong in the Eastern Himalaya. Discovery of the three new species raises the total number of species of the genus Forcipomyia to 86 in India. A key to the Indian species of Lepidohelea is also provided.

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21

Roy, Nirmal Chandra. „Factors Influencing Industrial Relations in the Indian Tea Industry: Study in the Darjeeling, Terai, and Dooars Region“. International Journal of Indian Culture and Business Management 1, Nr. 1 (2021): 1. http://dx.doi.org/10.1504/ijicbm.2021.10037456.

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22

Das, Gautam Kumar. „Measuring similarity indices of tree species in the chilapata and mendabari forest stands of Dooars, West Bengal“. Journal of Tree Sciences 40, Nr. 1 (2021): 18–26. http://dx.doi.org/10.5958/2455-7129.2021.00002.9.

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23

Roy, Nirmal Chandra. „Factors influencing industrial relations in the Indian tea industry: study in the Darjeeling, Terai and Dooars regions“. International Journal of Indian Culture and Business Management 25, Nr. 1 (2022): 72. http://dx.doi.org/10.1504/ijicbm.2022.120920.

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24

Dey, Shuvendu. „Case Analysis I: Closed Tea Estates— A Case Study of the Dooars Region of West Bengal, India“. Vision: The Journal of Business Perspective 22, Nr. 3 (07.08.2018): 335–36. http://dx.doi.org/10.1177/0972262918788227.

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25

Paul, Kartick Chandra. „Case Analysis II: Closed Tea Estates— A Case Study of the Dooars Region of West Bengal, India“. Vision: The Journal of Business Perspective 22, Nr. 3 (07.08.2018): 337–38. http://dx.doi.org/10.1177/0972262918788229.

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26

Rudra, Dipankar. „Case Analysis III: Closed Tea Estates— A Case Study of the Dooars Region of West Bengal, India“. Vision: The Journal of Business Perspective 22, Nr. 3 (07.08.2018): 339–41. http://dx.doi.org/10.1177/0972262918788230.

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27

Ghosh, Amalendu, Amrita Das, Ruben Lepcha, Kaushik Majumdar und V. K. Baranwal. „Identification and distribution of aphid vectors spreading Citrus tristeza virus in Darjeeling hills and Dooars of India“. Journal of Asia-Pacific Entomology 18, Nr. 3 (September 2015): 601–5. http://dx.doi.org/10.1016/j.aspen.2015.07.001.

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28

Das, Mantu, Subhasish Das und Asis Mazumdar. „System Performance Evaluation for Tea Plants Replacing Sprinkler with Drip Irrigation using Water Uniformities in Dooars, India“. Asian Journal of Water, Environment and Pollution 20, Nr. 1 (23.01.2023): 9–16. http://dx.doi.org/10.3233/ajw230003.

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Tea gardens are facing water scarcity; moreover, their irrigation utilises overhead sprinklers, which lack uniformities and controlled irrigation methods. Evaluating the performance of drip irrigation is an important research area for better water resources management. To address these issues different drip irrigation methods have been experimented with having different combinations of drippers. Two plots are online drip systems while the other two are inline systems operated at the same pressure on water application uniformity while other conditions remain similar. Earlier studies witnessed experimentation of drip irrigation with only the same emitter flow. While in this research, the uniformity coefficient, emission uniformity and performance index are calculated. It is found that due to various dripper discharges and systems the water application significantly changes. Extreme values of discharge variation of the emitters were observed during field operations under the same pressure and length of laterals. From the evaluation of the uniformities and investment cost, the performance of an inline system with a 4 lph dripper at 60 cm with 1-m lateral spacing is found to be the best model for tea irrigation under the specified conditions. Later stage and further research efforts should be aimed at the findings of the efficiencies and yield response of tea under the four drip systems.

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Sam, Koyel, und Dr Namita Chakma. „An Inter-Block Level Analysis of Regional Disparity in the Youngest Alipurduar District of West Bengal“. Space and Culture, India 3, Nr. 3 (26.03.2016): 10. http://dx.doi.org/10.20896/saci.v3i3.159.

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Alipurduar (also known as ‘Dooars’) was a subdivision of Jalpaiguri district before its emergence as the new 20th district of West Bengal on 25 June 2014. The districts of North Bengal (including Darjeeling, Jalpaiguri, Coochbehar, Uttar Dinajpur, Dakshin Dinajpur and Malda) have been poorly placed in comparison to the state of West Bengal, in terms of Human Development Indicators: low literacy level, poor condition in sanitation, and partly availability of electricity and safe drinking water (Report on Comparative Backwardness of North Bengal Region, Government of India, 2002). Research on regional disparity is essential for addressing the lacuna in the planning process of development (Sen, 2001). In the present study, an analysis has been made in terms of the inter-block inequality in socio-economic and infrastructural development of Alipurduar district as a newly emerged region.

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Sarkar, Tapan. „Cold water fish diversity and their conservation status in Teesta,Jaldhak, Torsa, Kaljani and Sankosh Rivers of the Dooars region, West Bengal, India“. Asian Journal of Conservation Biology 10, Nr. 1 (Juli 2021): 146–52. http://dx.doi.org/10.53562/ajcb.wimq5691.

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A survey was conducted on the cold water fish diversity in the different rivers of the Dooars region with the help of fisherman. Data was collected on the monthly basis by using different nets. A total of 71 cold water fishes were reported during the study period. Most dominant family was cyprinidae with 32 species followed by Sisoridae with 12 species; Balitoridae 8 and Bagridae with 4 species etc. 70 cold water fish species in the river Teesta, 63 in Jaldhaka, 66 in Torsa, 61 in Kaljani and 66 in the river Sankosh were recorded. Ten Endangered and 31 Vulnerable species were reported from all the five rivers. Out of 71 cold water fishes many have consumption and ornamental value. Many migratory and sport cold water fishes are also reported. Catch frequency status indicates many fishes found rare and extremely rare during the study.

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Shit, Nonigopal, Dilip Kumar Hajra, Mrityunjay Mandal und Rahul Deb Mukherjee. „SEASONAL INFLUENCE ON PREVALENCE OF HAEMOPROTOZOAN PARASITIC DISEASES IN CROSSBRED CATTLE UNDER TERAI-DOOARS REGION OF WEST BENGAL, INDIA“. Exploratory Animal and Medical Research 13, Nr. 2 (01.12.2023): 191–97. http://dx.doi.org/10.52635/eamr/13.2.191-197.

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Majumder, A. Basu, S. K. Pathak und T. K. Hath. „EVALUATION OF SOME BIO-RATIONAL INSECTICIDES AGAINST THE LOOPER COMPLEX, HYPOSIDRA SPP. IN TEA PLANTATIONS OF DOOARS, WEST BENGAL“. Journal of Biopesticides 5, Nr. 1 (01.06.2011): 91–95. http://dx.doi.org/10.57182/jbiopestic.5.1.91-95.

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ABSTRACT The efficacy of some bio-rational insecticides against tea looper complex, Hyposidra spp. was evaluated at two different locations of Dooars tea plantations, West Bengal. The results indicated that all the insecticides were effective in reducing the looper population to a significant level. However, in comparison to other insecticides, neem based insecticides could not give the desired level of control. Among the different treatments, diflubenzuron 25 WP @ 700g/ha caused maximum reduction of loopers over control in both the sprayings at both the locations [Location I: 66.91% and 65.54% reduction of loopers at 7 days after 1st and 2nd spraying respectively) and Location II: 68% and 50.85% reduction of loopers at 7 days after 1st and 2nd spraying respectively)] and appeared to be the best treatment against loopers. Bt-k @ 1000 mL/ha was the next best treatment for suppressing looper population at 7 days after 1st spraying (64.44% and 67.81% reduction of loopers at Location I and II respectively) which was at par with recommended insecticide deltamethrin 2.8 EC @ 200 mL/ha (65.14% and 62.16% reduction of loopers at Location I and II respectively). However, in 2nd spraying, its efficacy was declined. Both the doses of Neem based insecticides recorded 31-49% reduction of loopers after 1st spraying but this was reduced only to 9-17% after 2nd spraying, Thus, in consideration of the performance of the insecticides, diflubenzuron @700 g/ha and Bt-k @ 1000 mL/ha could be included in the IPM package of looper.

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Banerjee, Supurna. „“Who Leaves Home If There is a Choice?”“. Transfers 11, Nr. 2 (01.06.2021): 53–75. http://dx.doi.org/10.3167/trans.2021.110205.

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The Dooars tea plantations in India were colonial enterprises set up through recruiting a migrant workforce from Central India. Against the background of the crisis in the Indian tea industry in the early 2000s, and the resulting migration of workers to the cities to join various casual workforces, this article questions the dualities in the framework of migration/displacement and aspiration/desperation. Through mapping the migration decisions of women workers from the plantations, the article traces the ways in which aspiration often follows from migration rather than predating it. Inheriting a history of displacement as migrant labor brought from Central India, the aspiration expressed is often that of belonging. The article then interrogates how the narratives of displacements feature in narratives of aspiration. The migration strategies are not uniform among all the women, but vary across their life stages and accordingly the possibilities and limitations post-migration differ.

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Ghosh, GourSundar, und ProfessorPrasenjit Deb. „DISCRIMINATION OF RETENTION PROBLEM AMONG TRIBAL COMMUNITY OF DOOARS REGION OF WEST BENGAL IN THE LIGHT OF SARVA SHIKSHA AVIJAAN.“ International Journal of Advanced Research 5, Nr. 11 (30.11.2017): 648–53. http://dx.doi.org/10.21474/ijar01/5814.

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Bharati, Minu, Prasanta Saha und Dhiraj Saha. „Variation in Esterase Activity Among Different Aedes aegypti L. Populations from the Dooars and Terai Regions of West Bengal, India“. Proceedings of the Zoological Society 71, Nr. 3 (18.11.2016): 239–47. http://dx.doi.org/10.1007/s12595-016-0193-8.

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Banerjee, Supurna. „From ‘Plantation Workers’ to Naukrānī“. Journal of South Asian Development 13, Nr. 2 (11.07.2018): 164–85. http://dx.doi.org/10.1177/0973174118785269.

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The tea plantations of Dooars in West Bengal are founded on a gendered division of labour. The recent economic crisis faced by the tea plantations brought long-established labour practices into question. Mounting expenses and closures led to rising migration of plantation workers to distant urban areas in North and South India, in search of alternative employment. Many of these women found employment as domestic workers and care workers in Delhi and Gurgaon. Drawing on the in-depth narratives of these migrant domestic workers, this article explores self-perceptions and representations of work and brings to the forefront the ongoing process of skill acquisition on the one hand and its constant invisibilization on the other. This reproduces paid domestic and care work not only as women’s natural labour but as low skilled and low status work that is particularly suitable for migrant women. The women’s own perceptions help problematize and nuance otherwise monolithic understandings of labour in general and domestic labour in particular.

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Sarkar, Swatahsiddha. „Labour Migration in the Tea Plantations: Colonial and Neo-Liberal Trajectories of Plantation Labour in the Dooars Tea Belt of West Bengal“. Journal of Migration Affairs 2, Nr. 1 (01.09.2019): 25. http://dx.doi.org/10.36931/jma.2019.2.1.25-43.

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Apadodharanan, Subramanian, Srimoyee Basu und Herbert Zettel. „A new species of Onychotrechus Kirkaldy, 1903 (Hemiptera, Heteroptera, Gerridae) from Dooars, West Bengal, India, and a key to males of all species“. Deutsche Entomologische Zeitschrift 61, Nr. 2 (28.10.2014): 133–39. http://dx.doi.org/10.3897/dez.62.8154.

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Rudra, Mahua, und Min Bahadur. „Inter-Population Genetic Variation in the Indian Pygmy Field Mouse Mus terricolor Blyth, 1851 (Rodentia, Muridae) from Terai and Dooars of Darjeeling Foothills“. Proceedings of the Zoological Society 72, Nr. 3 (16.10.2018): 273–82. http://dx.doi.org/10.1007/s12595-018-0274-y.

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MISRA, TARUN KUMAR, ANIRUDDHA SAHA, ASHIS KUMAR NANDA und PALASH MANDAL. „Effects of climatic factors on antioxidant quality of tea (Camellia sinensis) in North Bengal“. Indian Journal of Agricultural Sciences 92, Nr. 7 (25.03.2022): 816–20. http://dx.doi.org/10.56093/ijas.v92i7.83947.

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Tea [Camellia sinensis (L.) O. Kuntze] is one of the important contributors to the growing economy of NorthBengal. The phytochemical and therapeutic qualities of tea prominently altered recently due to continuous change in climatic conditions of North Bengal. The nutraceutical quality of tea is largely dependent on antioxidant attributes. For investigating the relationship between antioxidant attributes and climatic factors, the present field experiment was conducted in 18 tea gardens of Terai, Dooars and Darjeeling Hills of North Bengal during 2012–17. Antioxidant and phytochemical analysis was performed in three different harvest seasons, viz. March, June and December. Phenolic compounds including catechins were low during winter months, and then gradually increased up to warmer spring season. In stress condition, tea plants biosynthesized more flavonoids and high flavour index in Darjeeling hills. However, free-radical scavenging and metal chelating activities were found to increase from spring to winter season. The data were pooled for PCA analysis to determine the relationship between seasonal variations and tea antioxidant quality in each region of North Bengal separately. Different attributes of climatic factors significantly correlated with antioxidant quality and bioactive compounds. Variation in climate is reportedly affecting the antioxidant quality of tea and its shifting pattern grossly influences the key phytochemicals responsible for the flavour of tea.

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Ghosh, Maya. „Tribal Culture in the Matrix of an Inclusive Society: A Case of Marginality of Tribes in Terai and Dooars Region of West Bengal in India“. Studies of Tribes and Tribals 12, Nr. 1 (Juli 2014): 71–83. http://dx.doi.org/10.1080/0972639x.2014.11886688.

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Das, Mantu, und Snehasish Saha. „Spatio-temporal variations of a meandering channel morphodynamics: A study along the Kaljani River in Bhuchungmari-Moamari Section of North Bengal Dooars, West Bengal (India)“. RESEARCH REVIEW International Journal of Multidisciplinary 8, Nr. 3 (14.03.2023): 114–31. http://dx.doi.org/10.31305/rrijm.2023.v08.n03.014.

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Rivers being the most dynamic and natural engines receive the maximum outcome of process-form activities over space and time. Displacement and shifting of course of the alluvial channels over the lower gradients result into severe bed-bank scouring activities temporally. River Kaljani within the neo tectonically active zone of North Bengal plains is an example of temporal variations of high sinuosity and braiding over the softer lithology. The present work is focusing on a temporal study from 1970 to 2019. The SOI Topographical map of 1:50,000 scales has been the base layer along with temporal satellite imageries (1990, 2000, 2010 and 2019). The schematization has followed digitization, rectiﬁcation and overlaying of conformal layers extracted from the USGS website under UTM Projection system and WGS of 1984 datum for north 45 zones under GIS platform. Multi-temporal satellite data identified serious course changes of the selected reach of lower segment of Kaljani River. The rectified multi-spectral bands are used to make the NDWI for identification of the water content on earth surface followed by selective morphometric analysis e.g. sinuosity index, braided index and roundness of curvature to access the spatio-temporal changes accomplishing some derivative mathematical equations. Descriptive statistics viz. mean, standard deviation (SD), coefficient of variation (CV), skewness and kurtosis were used and explained maximum course oscillations. The authors tried to examine the fact for six temporal frames i.e. 1970, 1990, 2000, 2006, 2010 and 2019 and received high sinuosity of all categories. Conclusively the work claims to set a documentary approach to examine the morphodynamics of an alluvial channel of Sub-Himalayan foothills.

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Chu, Guo Ping, und Peng Fei Liu. „A Study on Dynamic Performance of Deviation-Based Sliding-Door in Closed State“. Applied Mechanics and Materials 226-228 (November 2012): 621–26. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.621.

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This paper presents a flexible deviation model of sliding-doors developed using influence coefficient method. By introducing the deviation factors such as seal strip reaction force and door’s dynamic deformation, the closed-loop relationship of size of the sliding-door system when it is in closed state is further established. Then based on the influencing relationship of the sliding-door deviation on the system flexibility and stiffness, the influence of the deviation on the door dynamic performance is obtained. Finally, through analyzing the frequency response of a real sliding-door, the optimal door deviation design is proposed and the effectiveness of the method is also verified.

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Besky, Sarah. „The Plantation's Outsides: The Work of Settlement in Kalimpong, India“. Comparative Studies in Society and History 63, Nr. 2 (25.03.2021): 433–63. http://dx.doi.org/10.1017/s0010417521000104.

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AbstractWhile the colonial and contemporary economy of Bengal's Himalayan foothills is most often associated with the tea plantations of Darjeeling and the Dooars, the small farms of nearby Kalimpong were also a key space in which colonial agents and missionaries worked to “settle” the mountainous terrain. Focused on Kalimpong, this article traces the trajectory of one technology of settlement, agricultural extension, from the late 1880s to the early 1940s. It highlights agricultural extension's racialized and gendered politics, as well as its implication in a long-term project that merged material (i.e., food) provision with social reproduction (i.e., childrearing, kin-making). Agricultural extension created a patchwork of relatively biodiverse small farms that historical and contemporary accounts describe as a “green belt”: a socio-ecological outside to the plantation monocultures that dominate the hills. British governors attempted to use non-plantation space for multiple ends. In this sense, their work might be termed “biopolitical,” in that it was geared toward supporting and amplifying the life chances of certain human bodies and certain botanical species. Through a series of experiments, colonial agents made calculated choices about which of these forms of life should be made to flourish, and which might be allowed to perish. Importantly, settlement, as a set of intertwined projects, did not unfold in a coherent or deliberately sequential manner. Settlement was, and continues to be, a sedimentary process.

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Das, Soma, Ananda Mukhopadhyay und Somnath Roy. „MORPHOLOGICAL DIVERSITY, DEVELOPMENTAL TRAITS AND SEASONAL OCCURRENCE OF LOOPER PESTS (LEPIDOPTERA : GEOMETRIDAE) OF TEA CROP“. Journal of Biopesticides 03, Nr. 01 (01.06.2010): 16–19. http://dx.doi.org/10.57182/jbiopestic.3.1.16-19.

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ABSTRACT Caterpillars of three major geometrid species such as, Hyposidra talaca, H. infixaria and Buzura suppressaria frequently attack tea plantations of sub-Himalayan plains of Terai and the Dooars region. The feeding activity of these pests often leads to heavy defoliation of tea bushes almost throughout the year. A clear understanding of the morphological diversity of these sympatric species is necessary at all life stages in order to contemplate their management strategies. Field observations indicated that amongst the loopers there is a dominance of H. talaca and H. infixaria at different seasons compared to the third species, B. suppressaria. Although a clear morphological difference of the adult moths of three concerned species was evident along with their distinct morphometry and weights, the larval instars of the congeners of Hyposidra were difficult to distinguish. However, a significant difference was observed in their development periods, which were 55 days for H. talaca and 48 days for H. infixaria. A clear distinction of the concerned species based on morphometrics and weight of pupa was also evident. In recent past, loopers have assumed the status of severe pest of tea in the sub- Himalayan plains mainly due to invasion of the two species of Hyposidra that have joined B. suppressaria in sharing the tea leaves as their ideal host. The newer pest species of Hyposidra otherwise known to occur on forest and fruit plants have of late turned to be a major defoliator of tea.

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Chatterjee, Asitava, Shuvadip Adhikari, Anandamay Barik und Subhra Kumar Mukhopadhyay. „The Mid-Winter Assemblage And Diversity Of Bird Populations At Patlakhawa Protected Forest, Coochbehar, West Bengal, India“. Ring 35, Nr. 1 (12.03.2014): 31–53. http://dx.doi.org/10.2478/ring-2013-0002.

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ABSTRACT We compared avian community structure of six contrasting habitat types at Patlakhawa Protected Forest of Dooars of West Bengal. During three weeks of the mid-winter studies 154 bird species representing 41 families were recorded. Of the 154 recorded species, 22 were observed in grasslands, 22 in swamp forest, 46 in riverine forest, 52 at miscellaneous plantation areas, 43 at forest edges and 51 at wetlands. The Shannon-Wiener general diversity indices varied among the habitats and ranged from 2.323 to 3.458. Richness (5.813-11.410), evenness (0.406-0.641) and dominance (0.042-0.128) indices also varied considerably among the study locations. The highest diversity, the lowest dominance and a very high evenness were characteristics of miscellaneous plantations. Grasslands showed highest evenness and considerably high species diversity. The lowest avian evenness and diversity were recorded in wetlands and swamp forests. Insectivorous birds were most numerous (53), followed by carnivorous (40), omnivorous (29) and frugivorous (15) birds. Winter appeared to be the best time for niche occupancy at the Himalayan foothills for assemblages of either winter migrants and visitors or altitudinal and passage migrants, as about 30% of all encountered species were migrants. 96 bird species were observed to occur at any one of these habitat types showing high habitat fidelity. Mixed avian foraging assemblages that varied in species number and compositions were observed and they contain 11 to 17 species. Avifaunal niche diversity and richness in different habitats of Patlakhawa Protected Forest during mid-winter envisaged its importance from conservation point of view.

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R., Bera, Datta A, Bose S., Barik A.K., Asthana A. und Seal A. „Development of Regenerative Tea Cultivation Models through Dual Approach of Soil and Plant Health Management towards Crop Sustainability, Soil Quality Development, Pesticide Reduction and Climate Change Mitigation: A Case Study from Lakhipara Tea Estate“,. International Journal of Environment and Climate Change 14, Nr. 4 (22.04.2024): 494–512. http://dx.doi.org/10.9734/ijecc/2024/v14i44135.

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Climate change is a reality and its impact on the tea plantations is apparent in the rise of pest intensity, higher agrochemical use, inconsistent crop yields, declining grand growth period, increased abiotic stress and various other challenges; that threaten long-term sustainability of the Indian tea sector. The urgency to adopt sustainable practices is increasing by the day but to gain time bound results a comprehensive focus encompassing soil and plant health development will be crucial. To deal with climate challenge head-on, the Indian tea industry is making changes at various levels of operations. The sustainable tea initiative at Lakhipara tea estate, was one such attempt by the Goodricke Group Limited in their Dooars tea growing region of West Bengal. The program was initiated in 2014 with an aim to reduce pesticide use, improve soil quality, and produce quality teas while sustaining crop yields, improving renewable energy use and lowering the carbon footprint. Adoption of Inhana Rational Farming (IRF) Technology and taking the essence from ‘Trophobiosis Theory’ of French Scientist F. Chaboussou, the program focused on management of soil and plant health. Three years evaluation of crop yields in respect of the budgeted crop, revealed on an average an excess of 78 kg/ha/year in the project area. In rest of the garden area a contrasting crop loss of 118 kg was recorded per ha during the same period. The higher crop performance positively correlated with the higher nutrient use efficiency which was 17.7 percent higher in the project area (NUENPK : 8.86) as compared to the general garden area (NUENPK : 7.53), which reflected the impact of plant health management towards enhanced nutrient uptake, assimilation and utilization. Assessment of pesticide usage, revealed up to 77% decrease in usage in the project area during 2014-16, as compared to the pre- project year. Comparison with pesticide usage of the Dooars tea growing region during this same period, indicated a 62% lower Crop Pesticide Pollution Index (CPPI) in the project area. The finding indicated a 52 to 77% reduction in the accumulated toxicity potential of the applied pesticides in the project area; thereby accrediting safer tea development under this program, when adjudged in terms of pesticide residue. Assessment of soil quality revealed an overall eight percent increment in Soil Fertility Index (FI) value, with significant improvement in soil microbial activity potential (MAP) values i.e., by almost four times. The finding pointed towards the favourable impact of soil health management primarily through Novcom composting towards enhancement of soil microbial interactions. Post three years of experimentation the overall Soil Quality Iindex (SQI) value increased by 6% in the project area. The finding corroborated a concurrent 6.72% increase in the soil organic carbon stock during the same period. Reduction in use of non- renewable inputs viz. chemical fertilizers and pesticides in the project area was indicated by approximately 40 percent enhancement in energy use efficiency and energy productivity post the assessment period. Carbon assessment in terms of kg CO2 equivalents/ kg made tea (using ACFA version 1.0) indicated approx. 65 to 70 % lower footprint in the project area, primarily due to 20 to 30 % reduction in chemical fertilizers and 60 to 70 % reduction in the use of synthetic pesticides. The results indicated that while integrated soil management is the pre-requisite criteria towards rejuvenation of soil health and for restoration of the habitat for predators, it does not play a direct role in reducing the pest pressure and simultaneously the requirement of pesticides. Physiologically activated plants/ bushes on the other hand; due to their higher nutrient assimilation capacity and efficient protein synthesis are always lesser susceptible to pest attack. Hence, focus on activation of plant physiology can reduce the plant- pest interaction leading to a natural reduction in the requirement for pesticides vis-à-vis the pesticide usage.

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Mukhopadhyay, Tanmay, und Soumen Bhattacharjee. „Genetic Diversity and Population Structure Analyses of Threatened Amblyceps mangois from Sub-Himalayan West Bengal, India Through Rapd and ISSR Fingerprinting“. Croatian Journal of Fisheries 77, Nr. 1 (01.03.2019): 33–50. http://dx.doi.org/10.2478/cjf-2019-0004.

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Abstract Amblyceps mangois or the “Indian torrent catfish” is a tropical, freshwater, hill-stream species that has ornamental-commercial value and has been included within the “Endangered” category in the list of threatened freshwater fishes of India. A total fourteen populations from the Terai and Dooars region of northern West Bengal, India were analyzed to study the genetic architecture of this species with the help of RAPD and ISSR markers. The observed number of alleles (S), Nei’s gene diversity (H) and Shannon’s information index (H´ or I) showed the highest values in the Teesta river system and the lowest values in the Mahananda river system. The UPGMA-based dendrogram and PCoA, based on RAPD and ISSR fingerprints, showed that the Mahananda and the Teesta river populations formed a group distinct from the remaining Jaldhaka river population. We further considered the fourteen riverine populations into nine groups according to the continuity of the water flow for SHE analysis. It was found that the three components, i.e. the pattern of diversity (H´), richness (S) and evenness (E), have varied and fluctuated across all fourteen populations from higher to lower altitude as the river flows downstream. AMOVA, PhiPT and genetic hierarchical analyses showed that a distinct hierarchical structure is present in Amblyceps populations in the study region. Low levels of genetic diversity/variation and genetic hierarchical structure with high genetic divergence were found in the present study as an indicator of the recent picture of threatened status of this species. This study is the initial attempt to characterize and evaluate the genetic architecture of the species from this region and there is a scope to manage the evolutionary significant units (ESU) for conservation purpose.

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Velkam Siregar. „Design of Automatic Door Prototype With Intelligent Control Method Using Sensor GY 906 Temperature Based on Arduino Uno“. Journal of Science Technology (JoSTec) 3, Nr. 1 (27.12.2021): 92–96. http://dx.doi.org/10.55299/jostec.v3i1.59.

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In the current era of globalization, there have been many developments, especially in the realm of technology. Technological advances are expected to facilitate human work. One example is the development of doors, where now there are many doors that operate automatically. Automatic door is a door that will open automatically when someone approaches the door without opening or pushing the door manually. Nowadays automatic doors have been widely used in various places. to facilitate access to a place, the authors conducted research to design automatic doors based on body temperature. This tool is designed using a GY 906 temperature sensor combined with the Arduino uno program.

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Shaikh-Mohammed, Javeed, Yousef Alharbi und Abdulrahman Alqahtani. „Door-Opening Technologies: Search for Affordable Assistive Technology“. Technologies 11, Nr. 6 (11.12.2023): 177. http://dx.doi.org/10.3390/technologies11060177.

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To the authors’ knowledge, currently, there is no review covering the different technologies applied to opening manual doors. Therefore, this review presents a summary of the various technologies available on the market as well as those under research and development for opening manual doors. Four subtopics—doorknob accessories, wheelchair-mounted door-opening accessories, door-opening robots, and door-opening drones—were used to group the various technologies for manually opening doors. It is evident that opening doors is a difficult process, and there are different ways to solve this problem in terms of the technology used and the cost of the end product. The search for an affordable assistive technology for opening manual doors is ongoing. This work is an attempt to provide wheelchair users and their healthcare providers with a one-stop source for door-opening technologies. At least one of these door-opening solutions could prove beneficial to the elderly and some wheelchair users for increased independence. The ideal option would depend on an individual’s needs and capabilities, and occupational therapists could assess and recommend the right solutions.

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