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- Shailender Singh
- Puja Jain
- K. Soman Sharad
- Anwer Shahnawaz
- Basant Tiwari
- Suvarna C. Joshi
- Anurag
- Ashok Kumar Mahto
- Ashok Kumar
- Avagaddi Prasad
- J. Belwin Edwar
- C. Shashank Roy
- G. Divyansh
- Jyothish R. Pillai
- M. Mutyala Rao
- P. Bhanumathy
- Vijith Mukundan
- Jaison Joseph
- A. K. Anil Kumar
- C. Ravikumar
- P. Ganesh
- S. C. Vishwakarma
- Aniruudha Bose
- Ram Kishor Gupta
- B. Sindal
- S. K. Rai
- P. Chinna Rao
- P. Ram Sankar
- D. C. Nagpure
- R. Kaul
- G. Mundra
- B. Singh
- Virendra Singh
- Swati Shabnam
- P. R. Oraon
- Sunita Kumari
- Jayanta Dhaoya
- N. Remesh
- A. K. Anilkumar
- V. Ashok
- Preeti Toppo
- Bijay Kumar Singh
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Kumar, Abhay
- Impact of Industrialisation on Environmental Pollution
Abstract Views :4060 |
PDF Views:598
Punjab.
Authors
Source
Indian Forester, Vol 135, No 9 (2009), Pagination: 1259-1270Abstract
In recent years the large scale urbanization, industrialisation and associated environmental alteration and its impact on biodiversity pose a threat to human existence through basic necessities, recreation and the ecological functions. It is evident that pollution from various sources particularly from industries has negative impact on environment, irreversible in nature, cause extinction of species, resulting in loss of unique genetic resources of great use. This is a transition period for many developing economies like India, so there is a strong need to strike a balance between industrial development and physical environment so as to reduce the intensity of pollution. In this paper an attempt has been made to analyse the ill effects of industrialisation on the environmental pollution. The central theme of this paper is to highlight the effect of industrial pollution on the quality and status of life. The limits for ambient air pollutants, status of air polluting industries, intensity of sound causing noise pollution in the region of Punjab has been examined.Keywords
Impact of Industrialization, Environmental Pollution, Urbanization, Air Pollutants,Punjab.
- Difficulties Faced by the Wheel Chair Users in Accessing Automated Teller Machine (ATM) : A Case Study
Abstract Views :595 |
PDF Views:0
Authors
Affiliations
1 Department of Physiotherapy, National Institute for the Orthopaedically Handicapped (NIOH), Kolkata (WB), IN
2 M.P.T. (Orthopaedics), Asst. Professor (Physiotherapy), Department of Physiotherapy, NIOH, Kolkata (WB, IN
3 M.P.T. (Orthopaedics), Physical Therapist, Department of Physiotherapy, NIOH, Kolkata (WB), IN
1 Department of Physiotherapy, National Institute for the Orthopaedically Handicapped (NIOH), Kolkata (WB), IN
2 M.P.T. (Orthopaedics), Asst. Professor (Physiotherapy), Department of Physiotherapy, NIOH, Kolkata (WB, IN
3 M.P.T. (Orthopaedics), Physical Therapist, Department of Physiotherapy, NIOH, Kolkata (WB), IN
Source
Indian Journal of Physiotherapy & Occupational Therapy-An International Journal, Vol 6, No 1 (2012), Pagination: 142-144Abstract
A barrier-free environment is one which enables people with disabilities to move about safely and freely and to be independent functioning member of the society in everyday activities such as procurement of goods and services, community living, employment, and leisure. In India the C.P.W.D Ministry of Urban affairs and employment has detailed the guidelines for making the environment barrier free for People with disability. This case study was carried out to assess the extent of application of these guidelines at an Automatic Teller Machine by evaluating the accessibility for a wheel chair user. Certain specifications were found as per guidelines but problems were identified in ramp slope, ATM height, absence of horizontal surface near entrance and difficulty in leg clearance. A few modifications and use of FACT V like models could enable wheelchair users to be independent in using an ATM.Keywords
Barrier Free Environment, Wheel Chair Users, ATM- Performance Evolution & Analysis of Various Lossless Compression Algorithm over Body Sensor Network Data
Abstract Views :165 |
PDF Views:5
Authors
Basant Tiwari
1,
Abhay Kumar
1
Affiliations
1 Devi Ahillya Vishwavidhyalaya (DAVV), Indore, IN
1 Devi Ahillya Vishwavidhyalaya (DAVV), Indore, IN
Source
Networking and Communication Engineering, Vol 4, No 13 (2012), Pagination: 769-773Abstract
For every BSN system data compression is very important concern. The compression is necessary in BSN system mainly due to limited battery power at the nodes and also because data has to be sent in a limited time period after generation. Since BSN data is a set of physiological values of patient generated from patient or human body so data compression algorithm must be lossless. Compressed data helps in better utilization of available network and helps to preserve the energy of networks because a BSN data file with reduced size requires less time to reach the other end of the network. Thus the compression and decompression algorithm must be reasonably effective in establishing efficient communication over the computer network for sending BSN data. There are number of data compression algorithms, which are used to compress different data of different formats. This paper presents an evaluation and performance analysis of some lossless data compression algorithms commonly available in term of Compression Ratio, compressionFactor, Saving Percentage, Compression & Decompression Time.
Keywords
BSN Data, Data Compression, Lossless Compression, DEFLATE, LZW, RLE, Compression Ratio, Compression Factor, Compression Time.- Wavelet Based Rotation Invariant Fingerprint Recognition
Abstract Views :162 |
PDF Views:2
Authors
Affiliations
1 Electronics and Telecommunication Dept., Universal College of Engineering, Pune University, Pune, IN
2 Devi Ahilya University, Indore, Madhya Pradesh, IN
1 Electronics and Telecommunication Dept., Universal College of Engineering, Pune University, Pune, IN
2 Devi Ahilya University, Indore, Madhya Pradesh, IN
Source
Digital Image Processing, Vol 4, No 4 (2012), Pagination: 178-181Abstract
Fingerprint recognition is a popular method for person identification over 100 years back which has been now very widely used by every forensics and law enforcement agency. Automatic fingerprint identification system (AFIS) is capable of performing human identification very efficiently. One of most commonly used approach for fingerprint matching is based on minutiae matching. Minutiae based recognition needs time-consuming pre-processing operations for finding minutiae points. This paper proposes image based rotation invariant algorithm for fingerprint feature extraction. A fingerprint recognition approach based on statistical features extracted from discrete image using wavelet has been presented here. Fingerprint recognition can be done efficiently using texture classification approach. We propose an effective combination of features for multi-scale and multi-directional recognition of fingerprints. The features include standard deviation, mean of wavelet decomposed image. We have used distance vector formula for similarity comparison between the texture classes. Database used for evaluation is of Biolab, University of Bologna. Fingerprint verification is done with a total of 2592 fingerprint images obtained by rotating each of the fingerprints of sixty subjects from 0° to 360° in steps of 10° each Experiments are carried out on FVC 2000 and FVC 2004 databases. Proposed work provided success rate up to 96.87% on standard database and can recognize one fingerprint in average time of 0.7ms.Keywords
Biometrics, Fingerprint, Wavelet Transform and Texture Based Approach.- A Generalised Cascaded Multilevel Inverter Using Series Connection of Submultilevel Inverter
Abstract Views :330 |
PDF Views:2
Authors
Affiliations
1 Department of Electrical and Electronics Engineering, Dr. M.G.R. Educational and Research Institute, Chennai-600095, IN
2 Department of Electrical and Electronics Engineering, Dr. M.G.R. Educational and Research Institute, Chennai-600095, IN
1 Department of Electrical and Electronics Engineering, Dr. M.G.R. Educational and Research Institute, Chennai-600095, IN
2 Department of Electrical and Electronics Engineering, Dr. M.G.R. Educational and Research Institute, Chennai-600095, IN
Source
Digital Signal Processing, Vol 7, No 6 (2015), Pagination: 182-184Abstract
Application of multilevel inverters for higher power purposes in industries has become more popular. This is partly because of high-quality output waveform of multilevel inverters in comparison with two level inverter. In this paper, initially a new topology for sub multilevel inverter is proposed and then series connection of the sub multilevel inverters is proposed as a generalized multilevel inverter. The proposed multilevel inverter uses reduced number of switching devices. The validity of the proposed multilevel inverter is verified with computer simulations using matlab, simulink.Keywords
Multilevel, Inverter, Submultilevel, Inverter, THD, Staircase Waveform.- Classification of Faults in Power Transmission Lines using Fuzzy-Logic Technique
Abstract Views :193 |
PDF Views:0
Authors
Affiliations
1 School of Electrical Engineering, VIT University, Vellore – 632014, Tamil Nadu, IN
1 School of Electrical Engineering, VIT University, Vellore – 632014, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 8, No 30 (2015), Pagination:Abstract
Transmission lines safeguard against exposed fault is the most critical task in the protection of power system. The purpose of a protective relaying is to identify the abnormal signals representing faults on a power transmission system. So fault classification is necessary for reliable and high speed protective relaying. This paper uses fuzzy logic technique for fault classification and this study describes a new approach to distinctly identify and classify ground and phase faults by using two separate fuzzy classifiers. Samples of post fault currents from all three phases at one end of the transmission system are being used to classify the nature of the faults. To demonstrate the effectiveness of this method, simulations considering various operating conditions have been performed on MATLAB. The simulation studies of the proposed technique indicate that the accuracy in fault classification increases because of two fuzzy classifiers is used for fault analysis.Keywords
Fault, Fault Classification, Fuzzy Logic, Fuzzy Inference System, Overhead Lines, Transmission Line ProtectionFull Text
- Mission Design and Performance of RLV-TD
Abstract Views :205 |
PDF Views:93
Authors
Jyothish R. Pillai
1,
M. Mutyala Rao
1,
P. Bhanumathy
1,
Vijith Mukundan
1,
Jaison Joseph
1,
A. K. Anil Kumar
1,
C. Ravikumar
1,
Abhay Kumar
1
Affiliations
1 Vikram Sarabhai Space Centre, Indian Space Research Organization, Thiruvananthapuram 695 022, IN
1 Vikram Sarabhai Space Centre, Indian Space Research Organization, Thiruvananthapuram 695 022, IN
Source
Current Science, Vol 114, No 01 (2018), Pagination: 101-108Abstract
Renewed interest in re-usable launch vehicles has led to the evolution of technology demonstration concepts, where the prime objective is to demonstrate new technologies at reduced cost and shorter turnaround time. This article presents details of both ascent and descent mission design of a low-cost Reusable Launch Vehicle Technology Demonstration (RLV-TD) programme. The technology demonstrator vehicle is boosted to hypersonic Mach number using a solid booster. During ascent phase, the vehicle was flown in a gravity turn trajectory to minimize structural loads on it. In the descent phase, an optimum angle of attack profile as a function of Mach number was computed to limit dynamic pressure, load factor and achieve vehicle trim with minimum control surface deflection. The mission design parameters were evaluated using Monte Carlo analysis utilizing six degrees of freedom simulations. Comparison of actual flight performance with pre-flight prediction is also made this article. Flight performance exhibits close match with the pre-flight predictions.Keywords
Flight Performance, Reusable Launch Vehicles, Mission Design, Pre-Flight Predictions.Full Text
References
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- Haya-Ramos, R. et al., Validation of the IXV mission analysis and flight mechanics design. In 18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference, Tours, France, AIAA 2012-5966, 24–28 September 2012.
- Joseph, J. et al., Trajectory design with thrust profile optimization for ascent phase of a hypersonic sub-orbital demonstration mission. In 58th International Astronautical Federation Conference, Hyderabad, 21–24 September 2007.
- Merel, M. H. and Mullen, F. J., Analytic Monte Carlo error analysis. J. Spacecraft Rockets, 1968, 5(11), 1304–1308.
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- Vacuum Brazing Of Titanium/316L Stainless Steel Transition Joint For Application In Helium Vessel Of Superconducting RF Cavities
Abstract Views :376 |
PDF Views:9
Authors
P. Ganesh
1,
Abhay Kumar
1,
S. C. Vishwakarma
1,
Aniruudha Bose
1,
Ram Kishor Gupta
1,
B. Sindal
1,
S. K. Rai
1,
P. Chinna Rao
1,
P. Ram Sankar
1,
D. C. Nagpure
1,
R. Kaul
1,
G. Mundra
1,
B. Singh
1
Affiliations
1 Raja Ramanna Centre for Advanced Technology, P.O.: CAT, Indore-452 013, IN
1 Raja Ramanna Centre for Advanced Technology, P.O.: CAT, Indore-452 013, IN
Source
Indian Welding Journal, Vol 51, No 3 (2018), Pagination: 59-65Abstract
Superconducting radiofrequency (SRF) cavities would form important part of the proposed Indian Spallation Neutron Source and Accelerator Driven System. The high beta 650 MHz SRF cavity would be enclosed in a cylindrical vessel to hold liquid helium (LHe). Titanium (Ti) is being considered as the material of construction of helium vessel. The LHe inlet supply line and return helium gas pipe line of the helium vessel would be made of 316L stainless steel (SS). This requires a bi-metallic tubular transition joint between Ti and 316LSS, operating at LHe temperature. Vacuum brazing and explosive welding are potential processes for joining these two dissimilar metals, as fusion welding leads to extensive cracking.
In the present experimental study, vacuum brazing was performed to join Ti-pipe/316LSS flange with BVAg8 braze filler metal (BFM). Notable features of the process include use of (i) 5-10 μm nickel electro-plating as a diffusion barrier on SS part for preventing possible iron migration towards titanium while improving surface wettability for BFM and (ii) use of 304 SS plug, shrunk fit into Ti-pipe, for achieving dimensional and profile accuracy of Ti-pipe during machining while also controlling joint gap during brazing process. The brazed joint displayed uniform joint thickness and acceptable level of hermeticity (helium leak rate 2 x 10-10mbar.lit/s) and also sustained six thermal cycles between 293 K and 77 K. Shear strength of Ti-SS brazed specimens, made in sandwich configuration, was found to be in the range of 50-60 MPa, with failure occurring at Ti/braze interface.
Keywords
Vacuum Brazing, Titanium, Stainless Steel 316L, BVAg8, Superconducting Radiofrequency (SRF) Cavities, Intermetallic Phases.References
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- Gupta PD (2013); Particle accelerators at RRCAT, Indore: Science, technology and applications, Indian Nucl. Soc. News, 10, pp. 4-7.
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- Villars P, Prince A and Okamoto H (1995); Handbook of ternary alloy phase diagrams. T. 7 i 8. ASM International, Materials Park, Ohio,
- Schwarz M (2003); Brazing. Ed. 2, ASM International, Materials Park, Ohio, pp.107-117.
- Shapiro AE and Flom YA (2007); Brazing of titanium at temperatures below 800°C: review and prospective applications. http://www.titanium-brazing.com/ publications/DVS-Manuscript_1020-Copy2-19-07.pdf
- Sloboda MH (1961). Design and Strength of Brazed Joints. Johnson Matthey & Co Limited, London, http://www.jm-metaljoining.com/french/pdfs-uploaded /Design%20and%20Strength.pdf
- Kumar A, Ganesh P, Kaul R. Chinna Rao P, Yadav DP, Sindal BK, Gupta RK, Sridhar R, Joshi SC, Singh B (2017); Process Development for Vacuum Brazed Niobium–316L Stainless Steel Transition Joints, Journal of Manufacturing Science and Engineering, 139(1), pp. 015001-015008.
- Winiowski A (2010); Mechanical and structural properties of joints of stainless steel and titanium brazed with silver filler metals containing tin, Archives of metallurgy and materials, 55(4), pp. 991-1000. DOI: 10.2478/v10172-010-0001-0009.
- Comparative Study of Wheat Varieties under Open Farming and Poplar-Based Agroforestry System in Uttarakhand, India
Abstract Views :248 |
PDF Views:84
Authors
Affiliations
1 Department of Agronomy, Ranchi Agriculture College, Birsa Agricultural University, Ranchi 834 006, IN
2 Department of GPB, G.B. Pant University of Agriculture and Technology, Pantnagar 263 145, IN
3 Department of SAF, Faculty of Forestry, Birsa Agricultural University, Ranchi 834 006, IN
4 Institute of Forest Productivity, Ranchi 835 303, IN
1 Department of Agronomy, Ranchi Agriculture College, Birsa Agricultural University, Ranchi 834 006, IN
2 Department of GPB, G.B. Pant University of Agriculture and Technology, Pantnagar 263 145, IN
3 Department of SAF, Faculty of Forestry, Birsa Agricultural University, Ranchi 834 006, IN
4 Institute of Forest Productivity, Ranchi 835 303, IN
Source
Current Science, Vol 117, No 6 (2019), Pagination: 1054-1059Abstract
A field experiment on wheat varieties was carried out at Agroforestry Research Centre, G.B. Pant University of Agriculture and Technology, Pantnagar. The experimental plots were laid out in randomized block design with two associate farming systems, open farming and poplar-based agroforestry system, and four varieties of wheat, viz. PBW-373, PBW-343, UP-262 and VL-907, with three replications. The average tree growth parameters, viz. plant height, diameter and crown width of poplar showed an increase at the rate of 8.43%, 12.36% and 17.91% respectively. Growth and yield attributes of wheat like germination count, leaf area index, plant height, dry matter accumulation, as well as yield of wheat were found higher in open farming compared to poplar-based agroforestry system. The yield characters of wheat, such as biological yield (112.01 q ha–1), grain yield (42.19 q ha–1), straw yield (69.93 q ha–1) and harvest index (39.82) were recorded maximum in VL-907 followed by PBW- 343, except for straw yield. Among soil chemical properties, electrical conductivity, organic carbon, and available NPK were higher, whereas pH was lower under poplar-based agroforestry system compared to open farming system. Above-ground, below-ground and total biomass, carbon stock and carbon sequestration were significantly higher in agroforestry system (130.42, 17.75, 148.17, 65.20 and 239.27 q ha–1 respectively) compared to open farming.Keywords
Agroforestry, Biomass, Carbon Sequestration, Intercropping, Wheat Varieties.Full Text
References
- Johl, S. S., Singh, S., Dev, D. S., Nijjar, G. S., Sindhu, A. S. and Grewal, S. S., Report of the expert committee on diversification of agriculture in Punjab, submitted to the Government of Punjab, 1986, p. 165.
- Garrity, D. P., Agroforestry and the achievement of the millenium development goals. Agrofor. Syst., 2004, 61, 5–17.
- Sarvade, S., Mishra, H. S., Kaushal, R., Chaturvedi, S., Tewari, S. and Jadhav, T. A., Performance of wheat (Triticum aestivum L.) crop under different spacings of trees and fertility levels. .Afr. J. Agric. Res., 2014, 9(9), 866–873.
- Indian State of Forest Report (ISFR), Forest Survey of India, Ministry for Environment, Forest and Climate Change, Government of India, 2013, p. 73.
- Singh, B. and Sharma, K. N., Tree growth and nutrient status of soil in a poplar (Populus deltoids Bartr.) based agroforestry system in Punjab, India. Agrofor. Syst., 2007, 70, 125–134.
- Chauhan, S. K., Brar, M. S. and Sharma, R., Performance of poplar (Populus deltoids bartr.) and its effect on wheat yield under agroforestry system in irrigated agro-ecosystem, India. Caspian J. Environ. Sci., 2012, 10(1), 53–60.
- Gupta, M. K. and Sharma, S. D., Effect of tree plantation on soil properties, profile morphology and productivity index: poplar in Yamunanagar district of Hariyana. Ann. For., 2009, 17(1), 43–70.
- Nandal, D. P. S. and Dhillon, A., Allelopathic effect of poplar (Populus deltoids Bartr. ex Marsh): an assessment on the response of wheat varieties under laboratory and field conditions. Indian J. Agrofor., 2013, 9, 125–127.
- Jain, S. K. and Singh, P., Performance of intercrops in agroforestry system: the case of poplar (Populus deltoides) in Uttar Pradesh (India). Indian For., 1999, 125, 195–205.
- Kareemulla, K., Rizvi, R. H., Kumar, K., Dwivedi, R. P. and Singh, R., Poplar agroforestry systems of western Uttar Pradesh in northern India: a socioeconomic analysis. For., Trees Livelihood, 2005, 15, 375–381.
- Prakash, O., Dubey, R. P., Dubey, S. K. and Deshwal, J. S., Evaluation of ber (Zizyphus mauritiana Lamk) based agrihorti systems under various tree ischolar_main management practices on reclaimed Yamuna ravines. Indian J. Soil Conserv., 2011, 39(1), 59–62.
- Chauhan, S. K., Sharma, R., Sharma, S. C., Gupta, N. and Ritu, Evaluation of poplar (Populus deltoids Bartr. ex Marsh.) boundary plantation based agri-silvicultural system for wheat–paddy yield and carbon storage. Int. J. Agric. For., 2012, 2(5), 239–246.
- Dhanda, R. S. and Verma, R. K., Timber volume and weight tables of farm grown poplar (Populus deltoids Bartr. ex Marsh.) in Punjab. Indian For., 2001, 127, 115–130.
- Intergovernmental Panel on Climate Change, Good Practice Guidance for LULUCF Sector, Cambridge University Press, Cambridge, UK, 2003.
- Sharma, S. C., Dogra, A. S., Upadhayay, A. and Chahal, G. S., Carbon stock and productivity assessment of Populus deltoids Bartr. ex Marsh in Punjab. Indian For., 2007, 133, 8–16.
- Chauhan, S. K., Nanda, R. K. and Brar, M. S., Adoption of poplar based agroforestry as an approach for diversified agriculture in Punjab. Indian For., 2009 135(5), 671–677.
- Sharma, N. K., Samra, J. S. and Dadhwal, K. S., Effect of poplar leaves incorporation on growth and yield of wheat in relation to fertilizer application. Indian For., 2005, 131, 563–572.
- Dhillon, G. P. S., Dhanda, R. S. and Dhillon, M. S., Performance of wheat under scattered trees of kikar (Acacia nilotica) under rainfed condition in Punjab (India). Indian For., 1998, 124(1), 48–53.
- Kumar, M., Lakiang, J. J. and Singh, S., Tree–crop interactions in the agroforestry systems of Mizoram. J. Trop. For. Sci., 2008, 20(2), 91–98.
- Uniyal, A. K. and Chhetri, S., An assessment of phytotoxic potential of promising agroforestry trees on germination and growth pattern of traditional field crops of Sikkim Himalaya, India. Am. Eur. J. Agric. Environ. Sci., 2010, 9(1), 70–78.
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- Mission Design, Preflight and Flight Performance and Observations for Pad Abort Test
Abstract Views :215 |
PDF Views:86
Authors
Jayanta Dhaoya
1,
N. Remesh
1,
C. Ravikumar
1,
P. Bhanumathy
1,
A. K. Anilkumar
1,
Abhay Kumar
1,
V. Ashok
1
Affiliations
1 Vikram Sarabhai Space Centre, Thiruvananthapuram 695 022, IN
1 Vikram Sarabhai Space Centre, Thiruvananthapuram 695 022, IN
Source
Current Science, Vol 120, No 1 (2021), Pagination: 89-95Abstract
Abort system is initiated to take the Crew Module (CM) away from the launch vehicle in case of an emergency at lift-off or at any point of time after launch for a mission with crew onboard. Crew Escape System (CES)-based abort is carried out from launch pad and during the atmospheric phase of ascent flight. The design and operation of CES play a crucial role in providing abort capability for escape from launch vehicle and return of the crew back to Earth during critical phase of ascent flight. CES motors are used to pull CM away from the launch vehicle during this mode of abort. Mission simulation and analysis is necessary for the design of CES-based abort mission and for its configuration. This article discusses the mission design, challenges faced during the design and strategies formulated towards the successful execution of Pad Abort Test.Keywords
Abort System, Flight Performance, Launch Vehicle, Mission Design.Full Text
References
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- Davidson, J. et al., Crew exploration vehicle ascent abort overview, AIAA-2007-6590. In AIAA Guidance, Navigation and Control Conference, August 2007.
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- Dhaoya, N. et al., Mission design and trajectory simulation for CES. In Symposium on Applied Aerodynamics and Design of Aerospace Vehicle (SAROD 2015), 3–5 December 2015, Trivandrum, India, Paper id CP 89.
- Biomass, Productivity and Carbon Sequestration of Tectona grandis and Gmelina arborea-Based Silvipastoral System
Abstract Views :174 |
PDF Views:84
Authors
Affiliations
1 Department of Silviculture and Agroforestry, College of Forestry, Birsa Agricultural University, Ranchi 834 006, IN
2 Forest Research Center for Eco-Rehabilitation, Prayagraj 211 002, IN
1 Department of Silviculture and Agroforestry, College of Forestry, Birsa Agricultural University, Ranchi 834 006, IN
2 Forest Research Center for Eco-Rehabilitation, Prayagraj 211 002, IN
Source
Current Science, Vol 121, No 12 (2021), Pagination: 1594-1599Abstract
This study was conducted in 2009 at Birsa Agricultural University, Ranchi, Jharkhand, India with Tectona grandis (teak), Gmelina arborea (gamhar) and forage crops such as Sudan grass (Sorghum sudanense) and Hybrid Napier grass (Pennisetum glaucum × Pennisetum purpureum) which were grown under silvipastoral system. Total biomass and total productivity potential of silvipastoral system were found highest with the combination of Tectona grandis and Hybrid Napier, i.e. 29.14 tonne ha–1 and 21.0 tonne ha–1 year–1 respectively, while minimum total biomass was found in sole Sudan grass (2.42 tonne ha–1) and maximum total productivity in T. grandis (2.09 tonne ha–1 year–1 ). The total carbon sequestration potential under silvipastoral system was maximum in T1: teak and Hybrid Napier grass (88.64 tonne ha–1) followed by T3: gamhar + Hybrid Napier (84.72 tonne ha–1), T2: teak + Sudan grass (77.68 tonne ha–1), and T4: gamhar + Sudan grass (77.42 tonne ha–1), while the minimum was found in T12: (33.38 tonne ha–1). Annual contribution of total litter production was 505.16 g m-2. Leaf litter in the species accounted for 95.40% and wood (branches and twigs) contributed 4.49% to total litter. The highest litterfall of 156.30 g m-2 was recorded in February followed by 151.72 g m-2 in January, while the least litterfall of 4.83 g m-2 was recorded in August.Keywords
Biomass, Carbon Sequestration, Forage Crop, Productivity, Silvipastoral System.Full Text
References
- Kumar, S., Agrawal, R. K., Dixit, A. K., Rai, A. K. and Rai, S. K., Forage crops and their management. Indian Grassland and Fodder Research Institute, Jhansi, 2012, p. 60.
- Gupta, S. K., Raina, N. S. and Sehgal, S., Potential of silvipastoral systems in improving the forage production in the hills of Jammu and Kashimir. J. Res., SKUAST-J, 2007, 6, 149–157.
- Lundgren, B. O. and Raintree, J. B., Cited in editorial: what is agroforestry. Agrofor. Syst., 1982, 1, 7–12.
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- Jose, S., Walter, D. and Kumar, M., Ecological considerations in sustainable silvopasture design and management. Agrofor. Syst., 2019; https://doi.org/ 10.1007/s10457-016-0065-2.
- Jose, S., Gillespie, A. R. and Pallardy, S. G., Interspecific interactions in temperate agroforestry. Agrofor. Syst., 2004, 61, 237–255.
- Nair, P. K. R., An Introduction to Agroforestry, Academic Publisher, Dordrecht, The Netherlands, 1993, p. 499.
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