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Das, D. K.
- Reclamation of Degraded Soil through Tree Plantation - Litter and Fertility Changes
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Indian Forester, Vol 133, No 5 (2007), Pagination: 647-654Abstract
This paper evaluates the relative efficacy of plantations of different tree species in improvement of high pH soil. The 12 tree species studied in general were effective in bringing about improvement in the soil properties as reflected by the changes in pH, EC, organic carbon, available nitrogen, phosphorus and potassium. Higher available N, P2O5 and K2O as well as higher organic carbon percentage were noted under canopy of Albizia procera followed by Leucaena leucocephala. The pH and EC were lowest under Albizia procera and changes were observed from 8.7 to 7.7 and 0.76 to 0.40 dS m-1, respectively in the span of 12 years. Albizia procera produced maximum litter fall (13.95 t ha-1year-1) followed by Leucaena leucocephala (13.25 t ha-1year-1) plantation. The nutrients returned through litter fall followed the order N>K>P in all the tree species and was helpful in reclamation of high pH soils.
- First Report of Canker Grub on Paulownia fortunei (Scrophulariaceae)
Abstract Views :174 |
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Indian Forester, Vol 127, No 7 (2001), Pagination: 821-822Abstract
No abstract- Small Scale Mining in Cluster:Pachami-Hatgacha Stone Project
Abstract Views :182 |
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Authors
Affiliations
1 Govt. of West Bengal, 252/2, Netaji Subhas Road, Howrah-711101, West Bengal, IN
1 Govt. of West Bengal, 252/2, Netaji Subhas Road, Howrah-711101, West Bengal, IN
Source
Indian Science Cruiser, Vol 30, No 6 (2016), Pagination: 19-26Abstract
It is a success story of a unique experiment on small scale cluster stone mining activities in West Bengal, India. Here the vision of the planner, unstinted support of the Government, geological concept and rigorous field work of a young geologist, dedication of the entrepreneurs, cooperation of the locals, all vibrated in the same tune and resonated to transform the stony wasteland into a throbbing centre of stone production within a span of only two and half a decade.- Some Thoughts to Explain Unsolved Puzzles of Cosmos
Abstract Views :146 |
PDF Views:3
Authors
Affiliations
1 Mines & Minerals, Govt. of West Bengal, IN
1 Mines & Minerals, Govt. of West Bengal, IN
Source
Indian Science Cruiser, Vol 29, No 3 (2015), Pagination: 9-10Abstract
Certain Cosmic puzzles yet need some better explanation for their proper understanding e.g.
a) From red shift of light spectrum we are assuming that distant galaxies recede from each other. The more the distance, the higher the speed of receding and in some cases at an unbelievable speed exceeding 1/3 rd of the velocity of light.
- Design, Development and Manufacture of Friction Welding Machine and its Performance
Abstract Views :143 |
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Authors
Affiliations
1 Mechanical Engg. Dept. Jadavpur University, Calcutta 700032, IN
1 Mechanical Engg. Dept. Jadavpur University, Calcutta 700032, IN
Source
Journal of the Association of Engineers, India, Vol 64, No Spl (1988), Pagination: 41-56Abstract
Friction Welding is of recent origin. In India it is not used in production and in fact friction welding machines are not being manufactured in our country. A group of five students affinal year Mech. Engg. Dept., designed and manufactured a friction welding machine as a part of their project work in the academic session 1985- 86. Although the machine was functioning, it had various shortcomings. The present paper is concerned with the development of a better friction welding machine and its manufacture. Specimens of similar and dissimilar metals have been welded in this machine and test reports of the welded specimens are also shown- Admittedly, there is scope for further improvement in the machine which will constitut work for the future investigation.References
- Mody D. S., Friction Welding, Indian Welding Journal, July, 1978.
- Das P. K., et al. Project Report on Friction Welding, 1982.
- Das D. K., Design and development of a friction welding machine and its performance testing. M. E. Project report being submitted.
- Soil Organic Carbon Dynamics in Populus deltoides Plantations Using RothC-model in The Indo-Gangetic Region of India
Abstract Views :174 |
PDF Views:73
Authors
Pankaj Panwar
1,
Sanjeev Chauhan
2,
D. K. Das
3,
Rajesh Kaushal
4,
Gurveen Arora
5,
Sumit Chaturvedi
4
Affiliations
1 ICAR-Indian Institute of Soil and Water Conservation, Research Centre, Chandigarh 160 019, IN
2 Department of Forestry and Natural Resources, Panjab Agricultural University, Ludhiana 141 004, IN
3 Dr Rajendra Prasad Central Agricultural University, Pusa 848 125, IN
4 ICAR-Indian Institute of Soil and Water Conservation, Dehradun 248 195, IN
5 G.B. Pant University of Agriculture and Technology, Pantnagar 263 145, IN
1 ICAR-Indian Institute of Soil and Water Conservation, Research Centre, Chandigarh 160 019, IN
2 Department of Forestry and Natural Resources, Panjab Agricultural University, Ludhiana 141 004, IN
3 Dr Rajendra Prasad Central Agricultural University, Pusa 848 125, IN
4 ICAR-Indian Institute of Soil and Water Conservation, Dehradun 248 195, IN
5 G.B. Pant University of Agriculture and Technology, Pantnagar 263 145, IN
Source
Current Science, Vol 121, No 12 (2021), Pagination: 1623-1627Abstract
Soil organic carbon (SOC) change can arise because of changes in land use, land management and climatic conditions. Modelling approach helps in proper choice of management practices for soil carbon build-up. In this context, RothC is a promising model for estimation of SOC changes in different land-use systems. In the present study, RothC model was used to predict the development of SOC in Populus deltoides plantation during three rotations in three agro-climatic zones of the Indo-Gangetic region, India. The result reveal that RothC fairly predicts SOC. Root mean square error for Lower Gangetic Region (LGR), Middle Gangetic Region (MGR) and Trans Gangetic Plain (TGP) was 2.75, 4.94 and 1.30 respectively, while comparing modelled and measured data. Model efficiency was 0.25, 0.36 and 0.89 for LGR, MGR and TGP respectively. The rate of change of measured SOC was 1.0, 1.59 and 1.51 mg ha–1 year–1 for LGR, MGR and TGP respectively, whereas the rate of change of simulated SOC was higher, i.e. 1.16 and 1.89 mg ha–1 year–1 for LGR and UGR respectively, and lower for TGP (0.97 mg ha–1 year–1).Keywords
Management Practices, Populus deltoids, Simulation Models, Soil Organic Carbon.Full Text
References
- Van Keulen, H., Tropical soil organic matter modelling: problems and prospects. Nutr. Cycl. Agroecosyst., 2001, 61(1/2), 33–39.
- Rani, S., Benbi, D. K., Rajasekaran, A. and Chauhan, S. K., Litterfall, decomposition and nutrient release patterns of different tree species in Taran Taran district of Punjab, India. J. Appl. Nat. Sci., 2016, 8(3), 1260–1266.
- Farage, P. K. et al., The potential for soil carbon sequestration in the tropic dryland farming systems of Africa and Latin America: a modelling approach. Soil Tillage Res., 2007, 94, 457–472.
- Jones, C. et al., Global climate change and soil carbon stock; predictions from two contrasting models for turnover of organic carbon in soil. Global Change Biol., 2005, 11, 154–166.
- Paustian, K. O. et al., Agricultural soil as a C sink to offset CO2 emission. Soil Use Manage., 1997, 13, 230–244.
- Kumar, Dinesh and Singh, N. B., Status of poplar introduction in India. For. Bull., 2012, 12(1), 9–14.
- Ludwig, B. et al., Predictive modelling of C dynamics in the longterm fertilization experiment at Bad Lauchstadt with the Rothamsted carbon model. Eur. J. Soil Sci., 2007, 58(5), 1155–1163.
- Dendoncker, N. et al., Assessing scale effects on modelled soil organic carbon contents as a result of land use change in Belgium. Soil Use Manage., 2008, 24, 8–18.
- Falloon, P. et al., Climate change and its impact on soil and vegetation carbon storage in Kenya, Jordan, India and Brazil. Agric. Ecosyst. Environ., 2007, 122, 114–124.
- Coleman, K. et al., Simulating trends in soil organic carbon in long-term experiments using RothC-26.3. Geoderma, 1997, 81(1–2), 29–44.
- Jenkinson, D. S. et al., Estimating net primary production from measurements made on soil organic matter. Ecology, 1999, 80, 2762–2773.
- Kelly, R. H. et al., Simulating trends in soil organic carbon in long-term experiments using the century model. Geoderma, 1997, 81(1–2), 75–90.
- Smith, P. et al., A comparison of the performance of nine soil organic matter models using datasets from seven long-term experiments. Geoderma, 1997, 81(1–2), 153–225.
- Malamoud, K. et al., Modelling how carbon affects soil structure. Geoderma, 2009, 149, 19–26.
- Falloon, P. et al., Estimating the size of the inert organic matter pool from total soil organic carbon content for use in the Rothamsted carbon model. Soil Biol. Biochem., 1998, 30, 1207–1211.
- Falloon, P. and Smith, P., Simulating SOC changes in long-term experiments with RothC and CENTURY: model evaluation for a regional scale application. Soil Use Manage., 2002, 18(2), 101– 111.
- Zimmermann, M. et al., Measured soil organic matter fractions can be related to pools in the RothC model. Eur. J. Soil Sci., 2006, 58(3), 658–667.
- Guo, L. et al., Application of the RothC model to the results of long-term experiments on typical upland soils in northern China. Soil Use Manage., 2007, 23(1), 63–70.
- Piper, C. S., Soil and Plant Analysis, Hans Publisher, Bombay, 1966.
- Coleman, K. and Jenkinson, D. S., Rothc-26.3. A Model for the Turnover of Carbon in Soil. Model Description and Windows Users’ Guide, Institute of Arable Crops Research, Rothamsted, UK, 2005.
- Jenkinson, D. S., Harris, H. C. and Ryan, J., Organic matter turnover in a calcareous clay soil from Syria under a two-course cereal rotation. Soil Biol. Biochem., 1999, 31(5), 687–693.
- Kaonga, M. L. and Coleman, K., Modelling soil organic carbon turnover in improved fallows in eastern Zambia using the RothC26.3 model. For. Ecol. Manage., 2008, 256, 1160–1166.
- Bhattacharyya, T. et al., Total carbon stock in Indian soils: issues, priorities and management. In Special Publication of the International Seminar on Land Resource Management for Food, Employment and Environment Security, Soil Conservation Society of India, New Delhi, 2000, pp. 1–46.
- Bhattacharyya, T. et al., Landuse, clay mineral type and organic carbon content in two Mollisols–Alfisols–Vertisols catenary sequences of tropical India. Clay Res., 2005, 24, 105–122.
- González-Molina, L., Etchevers-Barra, J. D. and Paz-Pellat, F., Performance of the rothc-26.3 model in short-term experiments in Mexican sites and systems. J. Agric. Sci., 2011, 149(4), 415–425; doi:10.1017/S0021859611000232.
- Barančíková, G. et al., Application of RothC model to predict soil organic carbon stock on agricultural soils of Slovakia. Soil Water Res., 2010, 5(1), 1–9.
- Kirschbaum Miko, U. F., The temperature dependence of soil organic matter decomposition, and the effect of global warming on soil organic C storage. Soil Biol. Biochem., 1995, 27(6), 753–760.
- Conant, R. T. et al., Temperature and soil organic matter decomposition rates – synthesis of current knowledge and a way forward. Global Change Biol., 2011, 17, 3392–3404.
- Smith, J., Smith, P. and Wattenbach, M., Projected changes in mineral soil carbon of European croplands and grasslands, 1990– 2080. Global Change Biol., 2005, 11, 2141–2152.
- Friggens, N. L. et al., Tree planting in organic soils does not result in net carbon sequestration on decadal timescales. Global Change Biol., 2020, 26, 5178–5188; doi:10.1111/gcb.15229.
- Health Hazard Due to Dust Pollution (Especially of Women Workers) in Stone Quarries and Crushers
Abstract Views :200 |
PDF Views:91
Authors
Affiliations
1 Director (Rtd), Directorate of Mines & Minerals, Govt of West Bengal, 252/2, N S Road, Howrah 711 101, IN
1 Director (Rtd), Directorate of Mines & Minerals, Govt of West Bengal, 252/2, N S Road, Howrah 711 101, IN
Source
Indian Science Cruiser, Vol 36, No 1 (2022), Pagination: 11-16Abstract
No Abstract.Keywords
No Keywords.Full Text
References
- S L Chakravorty — Small Scale Mining in Cluster: A Success Story from India – UN Guidelines for the development of Small/Medium Scale Mining, Harare, 1993.
- S K Dasgupta and S L Chakravorty — EIA/EMP Guideline for Small/Medium Scale Mining – Case study in Aravalli Region, Gurgaon, Haryana – MERN Research Bulletin, No. 9, 1996. Ed. Prof A Warhurst, University of Bath, UK.
- Prof. Ajoy K Ghosh — Small/Medium Scale Mining – A Global Perspective, Ed: Proceeding of Global Conference organized by National Insttitute of Small Mines, Calcutta, 1996.
- Proceeding and Recommendations – Calcutta Consensus and Noamundh Recommendation of Global conference on Small/Medium Scale Mining, Calcutta, Dec 1996.
- Arati Nandi and S L Chakravorty — India – Changing Socio-Economic Status of Tribal Women engaged in Small and Medium Mines and Mines related activities in India. MERN Research Bulletin No. 13 / 14, 1998, special issues, University of Bath, UK.
- Arati Nandi and Paramita Aich —Women in Mining – Towards better future?, Women and Work in South Asia: Contemporary Perspective in Labour, Capital and Society, Vol 29, No. 1 & 2, 1996. Pub: McGill University, Montreal, Canada.