ID: 51577
Title: Radar Interferometry Time Series Analysis of Mashhad Subsidence
Author: Maryam Dehghani, Mohammad Javad Valadan Zoej, Sassan Saatchi, Juliet Biggs, Barry Parsons, Tim Wright
Editor: Prof. B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: Radar interferometry, Time series analysis, Subsidence, Water level
Abstract: A large agricultural area loated in 20 km north of the city of Mashhad in the north-east of Iran is subject to land subsidence. The subsidence rate was achieved in a couple of sparse points by precise leveling between 1995 and 2005, and continuous GPS measurements obtained from 2005 to 2006. In order to study the temporal behavior of the deformation in high spatial resolution, the small baseline subset (SBAS) algorithm was used to generate the interferometric SAR time series analysis. Time series analysis was performed using 19 interferograms calculated from 12 ENVISAT ASAR data spanning between 2003 and 2006. The time series results exhibited that the area is subsiding continuously without a significant seasonal effect. Mean LOS deformation velocity map obtained from time series analysis demonstrated a considerable subsidence rate up to 24 (cm/yr). In order to evaluate the time series analysis results, continuous GPS measurements as a geodetic approach were applied. The comparisons showed a great agreement between interferometry results and geodetic technique. Moreover, the information of various piezometric wells distributed in the area corresponding to 1995 to 2005 showed a significant decline in water table up to 20 meters. The correlation between the piezometric information and the surface deformation at well ' s locations showed that the subsidence occurrence in Mashhad is due to the excess groundwater withdrawal.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51576
Title: Measuring the accuracy of Contour Interpolated digital elevation models
Author: Arabinda Sharma , K.N.Tiwari, P.B.S.Bhadoria
Editor: Prof. B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: DEM accuracy, Interpolation techniques, Cell resolution, Stream network
Abstract: Digital elevation models (DEM) are becoming increasingly important as tools in hydrological research and water resources management. Since error and uncertainty are inherently associated with spatial data, a complete evaluation of a DEM is of utmost important before it is put into subsequent analysis. The present paper offers an innovative approach for quality assessment of contour interpolated DEMs of different resolutions. Five most frequently cited interpolation methods viz., TIN with linear interpolation, Inverse Distance Weighing, Thin Plate Spline, Ordinary Kriging and TOPOGRID were selected for gridding of contours at five different resolutions i.e., 30m, 45m, 60m 75m and 90m. In order to compare the quality of interpolated DEMs, a qualitative and quantitative evaluation of inter-polated DEMs for their vertical, horizontal and shape accuracy were carried out. It was found that different interpolation methods produced DEMs with different levels of artifacts. The analyses of vertical accuracy suggested that the variations were not pronounced in nature. However, the quantitative comparisons for horizontal and shape accuracy showed that there was a high level of disparity with significant differences among the interpolated DEMs.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51575
Title: The Land-cover Change Mapper (LCM) and its Application to Timber Harvest Monitoring in Western Canada
Author: Guillermo Castilla, Richard H. Guthrie, and Geoffrey J. Hay
Editor: Russell G. Congalton
Year: 2009
Publisher: ASPRS, Vol 75, No 8, August 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Photogrammetric Engineering & Remote Sensing
Keywords: Land-cover Change Mapper (LCM), Western Canada, SPOT
Abstract: We introduce an automated change detection and delineation tool for remote sensing images: the Land -cover Change Mapper (LCM). LCM rapidly generates a polygon vector layer (shapefile) of regions deemed to have undergone significant change in land-cover. In its simplest usage, LCM requires two single band or multi-band co-registered images of the same scene acquired at different dates, and as the only user-defined parameter, the minimum size for change regions. The main advantages of this tool are that (a) it is fully unsupervised, (b) it is exceptionally fast, (c) it is robust to geometric misregistration errors and variations in illumination, and (d) it produces visually pleasing outlines that resemble those obtained through manual digitization. We describe how the tool works, illustrate its application to monitoring forest clear cuts on a 1,000 km2 area in Western Canada using SPOT imagery, compare it to a commercial tool, and report on its thematic and spatial accuracy. A freeware LCM version is avaiable on the Internet.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51574
Title: Use of Remote Sensing in Characterization and Management of Dhamni Micro-watershed of Chandrapur District of Maharashtra
Author: Elvis A.Shukla, Jagdish Prasad, M.S.S.Nagaraju, Rajeev Srivastava, D.L.Kauraw
Editor: Prof B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote sensing
Keywords: Soil mapping, Remote sensing, Soil productivity, Crop suitability
Abstract: Soil resource characterization of Dhamni micro-watershed in Chandrapur district of Maharashtra was carried out using IRS-ID LISS -III data in conjuction with field survey and ancillary data. The study indicates that nearly 84.2 percent of the total geographical area of the watershed is under cultivation. Forest (mainly degraded) occupy only 4.5 percent area whereas wasteland with scrub cover 9.4 percent area of the watershed. Nine soil series were tentatively identified and mapped as soil series associated in to five mapping units. These soils belong to order Inceptisol, Vertisol and Mollisol. Except the soils of wasteland with scrub, other soils are moderately suitable for pigeonpea and soybean and have average to good productivity.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51573
Title: Flood inundation modeling using MIKE FLOOD and Remote sensing data
Author: S.Patro, C.Chatterjee, S. Mohanty, R.Singh, N.S. Raghuwanshi
Editor: Prof B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: MIKE FLOOD, Flood inundation, Modeling, Remote sensing, SRTM DEM
Abstract: A coupled 1D-2D hydrodynamic model, MIKE FLOOD was used to simulate the flood inundation extent and flooding depth in the delta region of Mahanadi River basin in India. Initially, the 1D model MIKE 11 was calibrated using river water level and discharge data of various gauging sites for the monsoon period (June to October) of the year 2002. Subsequently, the calibrated set up was validated using both discharge and water level data for the same period of the year 2001. The performance of calibration and validation results of MIKE 11 were evaluated using different performance indices. A bathymetry of the study area with a spatial resolution of 90 m was prepared from SRTM DEM and provided as an input to the 2D mode, MIKE 21. MIKE 11 and MIKE 21 models were then coupled using lateral links to form the MIKE FLOOD model set up for simulating the two dimensionsl flood inundations in the study area. Flood inundation is simulated for the year 2001 and the maximum flood inundation extent simulated by the model was compared with the corresponding acual inundated area obtained from IRS-1D WiFS image.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51572
Title: Land Use/Land Cover dynamics in Umngot watershed of Meghalaya using Geospatial tools
Author: K.Chakraborty, P.K. Joshi, K.K.Sarma
Editor: Prof B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: Land use, Land cover, Dynamics
Abstract: Meghalaya is a landlocked state where the progress of industrialization is very slow. Majority of the population (rural) depends on agriculture. Agriculture in the state is carried on in primitive ways with Jhumming prevailing in many parts. This practice is considered destructive as vast forest areas are cleared and burnt. Such areas are used for cultivation and left out. After a gap of few years (2-3 years as of now and 15-20 years in past) the area is revisited for cultivation without allowing to rejuvenate. The present work provides a status and trend of Land use land cover dynamics in parts (at watershed level) of Meghalaya. The geospatial tools have been used to assess (a) the changes in land use land cover since 1970s to 2005; (b) patch dynamics for understanding the degrre of fragmentation; (c) changes along the terrain topography. Umngot watershed of Meghalaya is taken as experimental area, which is a representive of mid- altitudinal watershed particularly in the Jaintia hills district of Meghalaya.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51571
Title: Remote sensing and GIS study of the Ravipadu gabbro pluton, Prakasam alkaline province, Andhra Pradesh, India
Author: J.Ratnakar, R.M.Sundaram
Editor: Prof B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: Remote sensing, Classified image, Petrogenetic GIS, Gabbro pluton, Prakasam alkaline province, Andhra Pradesh, India
Abstract: Geospatial themes namely geology, topography and classified satellite image of the area in and around Ravipadu gabbro pluton (RGP), Prakasam alkaline province, Andhra Pradesh has been studied. The geological map of co-magmatic suite of RGP predominantly exposes olivine gabbro followed by olivine norite, troctolite and anorthosite. Graphic portrayal of the attributes such as mineralogical (modal) and chemical compositions of rocks of RGP is supplemented in the map display. The topography reveals that the terrain is flat and that it underwent differential erosion thereby exposing the deeply eroded RGP flanked on the North and South by two hilly mounds composed of cordierite-garnet gneiss (metapelite). Digital analysis of satellite image (IRS-1D) of the Ravipadu area, based on the spatial and spectral characteristics producing a classified image superposing on the vectorised geological map of the gabbroic body on a spatially referenced base, reveal a near perfect match of the two digital data products.
A digital correspondence of the thematic classes with the units in the geological map was significantly remarkable. Integration of the geology, satellite image and topo-layer by digital means on a common platform providing a unified GIS picture of RGP is the crux of this study. GIS tool application on RGP provisionally suggests that the base of magma chamber for RGP is towards east and the top is towards the west.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51570
Title: Long term shoreline oscillation and changes of Cauvery delta coastline inferred from Satellite imageries
Author: R.Sathyanarayan Sridhar, K.Elangovan, P.K. Suresh
Editor: Prof B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: Shoreline oscillation, IRS Satellite data
Abstract: Coastal zone is highly volatile ecosystem which is always in adjustments. Loss of shore line will cause severe imapact on human life and as well as their properties. Remote sensing is a reliable technique to study the historical shoreline changes. Therefore in this paper long term shoreline oscillations of Cauvery delta shorelines at Poompuhar, Tharangambadi and Nagapattinam were studied using satellite imageries and the same was physically observed at the above three locations with the help of reference pillars and compared mutually.It was observed that the shoreline at Poompuhar is under accretion at the rate of 1.79m/year and other shoreline stretches at Tharangambadi and Nagapattinam were under erosion at 0.4888m/year and 0.4985n/year respectively. It was also observed that the remote sensing study qualitatively matches with the physical observation for all the three coastal stretches of the study area.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51569
Title: Assessment of groundwater potential zones using GIS Technique
Author: M. Nagarajan, Sujit Singh
Editor: Prof B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: ArcGIS, Groundwater, Weighted overlay, Thematic maps
Abstract: A case study was conducted to find out the groundwater potential zones in Kattakulathur block, Tamil Nadu, India with an aerial extent of 360.60 km2. The thematic maps such as geology, geomorphology, soil hydrological group, land use/land cover and drainage map were prepared for the study area. The Digital Elevation Model (DEM) has been generated from the 10m interval contour lines (which is derived from SOI, Toposheet 1:25000 scale) and obtained the slope (%) of the study area. The groundwater potential zones were obtained by overlaying all the thematic maps in terms of weighted overlay methods using the spatial analysis tool in ArcGIS 9.2. During weighted overlay analysis, the ranking has been given for each individual parameter of each thematic map and weights were assigned according to the influence such as soil-25%, geomorphology-25%, land use/land cover-25%, slope-15%, lineament-5% and drainage/streams-5% and find out the potential zones in terms of good, moderate and poor zones with the area of 49.70 km2, 261.61 km2 and 46.04 km2 respectively. The potential zone wise study area was overlaid with village boundary map and the village wise groundwater potential zones with three categories such as good, moderate and poor zones were obtaines. This GIS bases output result was validated by conducting field survey by randomly selecting wells in different villages using GPS instruments. The coordinates of each well location were obtained by GPS and plotted in the GIS platform and it was clearly shown that the well coordinates were exactly seated with classified zones.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51568
Title: Geo-spatial approach for phytodiversity characterization in Panna National Park (part), M.P. (India)
Author: Garima Porwal, Sarnam Singh
Editor: Prof B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: Geo-spatial, Remote sensing, Phytodiversity characterization, Panna national park, Disturbance regimes, Biological richness
Abstract: Panna National Park is situated in the north-central part of Madhya Pradesh, India. Landscape parameters like fragmentation, porosity, patchiness and jaxtaposition have been analysed for disturbance gradient characterization. Disturbance on biodiversity due to human activities has been studied both qualitatively. The species richness is highest in northern mixed dry deciduous forest followed by dry deciduous open scrub and southern tropical dry deciduous teak forest. Species richness of the open thorny dry deciduous forest with grasses is found to be the lowest. Disturbance analysis indicates that 22.02% of the southern slightly moist teak forests are highly disturbed whereas Anogeissus forest and Riverine forest have 17.04% and 12.41% of the area under high disturbance, respectively. A total of 88 field sample plots were laid to enumerate trees, shrubs, herbs, climbers, etc. Biological richness parameters such as Shannon-Wiener biodiversity index, biodiversity value, ecosystem uniqueness were derived from field data. High biological richness is found in northern mixed dry deciduous forest and mixed dry deciduous forest with bamboo. More than 99% of such areas are falling under medium to high biological richness. Nearly 55% of the gentle and flat to gentle, slope categories were found to have low biological richness. Phytosociological analysis of sampled field data indicated that the number of trees per unit area is the lowest in the Savannah. In inaccessible areas, the species richness and number of trees per unit area is very high. Main forces causing disturbance are search for diamonds, dams on river Ken, settlements in and around the park, grazing and resource utilization by villagers for fodder, animal grazing, fuel-wood, timber, etc.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51567
Title: Burnt area mapping of Bandipur National Park, India using IRS 1C/1D LISS III Data
Author: R.K.Somashekar, P.Ravikumar, C.N.Mohan Kumar, K.L.Prakash, B.C.Nagaraja
Editor: Prof B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: IRS IC/D LISS III, Western Ghats, Subjective weightages, Fire risk zone, Land Use and Land Cover, Satellite data
Abstract: The Bandipur National Park situated in the Western Ghats of Karnataka State, is one of the biodiversity hotspots of the world. During recent years, this park has witnessed repeated fires, affecting considerable areas under vegetation. The temporal satellite data from 1997 to 2006 have been analyzed to map the burnt areas using Remote Sensing (RS) and Geographic Information System (GIS) techniques. The vegetation cover is moist deciduous, dry deciduous, scrub forests and teak plantation. Information on extent of the burnt areas and the type of vegetation affected were derived forest range-wise. The fire prone regions have been identified by integrating vegetation type/density, road and settlement network and past history of forest fire occurrence, by assigning subjective weightage according to their fire-inducing capability or their sensitivity to fire. Comparison between each temporal dataset in terms of the extent of burnt area was also carried out to interpret fire incidence pattern. Three categories of fire risk regions such as Low, Moderate and High fire intensity zones were identified and it was found that almost 40% of the study area falls under low risk zone. An evaluation of the existing fire management systems and the implication of fire prevention programmes has been discussed, besides an assessment of causal factors for fire incidence in the park.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51566
Title: Selection of suitable sites for water harvesting structures in Soankhand Watershed, Punjab using Remote sensing and Geographical Information System (RS & GIS) approach- A case study
Author: J.P.Singh, Darshdeep Singh, P.K.Litoria
Editor: Prof B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: Suitable water harvesting structures, Geoinformatics
Abstract: A case study has been conducted to identify suitable sites for water harvesting structures in Soankhad watershed, Punjab using information technologies such as Remote Sensing and Geographical Information System (RS-GIS). The IRS-IC, P6 satellite imagery of the Soankhad watershed was used. The various Thematic maps such as land use map, hydrological soil group map, slope map and DEM map were prepared for selecting suitable site for construction of water harvesting structures. The suitable sites were not found for nala bunding and farm ponds due to steep slope, less soil thickness and high runoff velocity. Fourteen check dams and six percolation tanks were proposed for the construction as per Integrated Mission for Sustainable Develpment (IMSD) guidelines. The water balance study of the Soankhad watershed was also computed with monthly mean temperature and rainfall data using TM model. The average runoff for the wet season (July-September) 1996 was computed to be about 1543.82 mm and the total runoff volume from the Soankhad watershed was estimated to be 143.52 Mm3.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51565
Title: Remote Sensing based agricultural drought assessment in Palar basin of Tamil Nadu State, India
Author: T.Murali Krishna, G.Ravikumar, M.Krishnaveni
Editor: Prof B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: Drought assessment, Remote sensing, WiFS, NDVI
Abstract: Agricultural drought has been a recurrent phenomenon in many parts of India. Remote sensing plays a vital role in real time monitoring of the agricultural drought conditions over large area, there by effectively supplementing the ground mechanism. Conventional drought monitoring is based on subjective data. The satellite based monitoring such as National Agricultural Drought Assessment and Monitoring System (NADAMS) is based on the crop condition, which is an integrated effect of soil, effective rainfall, weather, etc. Drought causes changes in the external appearance of vegetation, which can clearly be identified (by their changed spectral response) and judged using satellite sensors through the use of vegetation indices. These indices are functions of rate of growth of the plants and are sensitive to the changes of moisture stress in vegetation. The satellite based drought assessment methodology was developed based on relationship obtained between previous year ' s Normalised Difference Vegetation Index (NDVI) profiles with corresponding agricultural performance available at district/block level. Palar basin, one of the major river basins in Tamil Nadu state was selected as the study area. The basin covers 3 districts, which contain 44 blocks. Wide Image Field Sensor (WiFS) of 188m spatial resolution from Indian Remote Sensing Satellite (IRS) data was used for the analysis. Satellite based vegetation index NDVI, was generated for Samba and Navarai seasons in the years 1998 and 1999. An attempt has been made to estimate the area under paddy. It was also observed that, there was reduction in the crop area as well as vigour in the vegetation in both Samba and Navarai seasons in 1999 when compared with 1998. Drought severity maps were prepared in GIS environment giving blockwise agricultural water deficiency status.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51564
Title: Visualizing Uncertainty-How Fuzzy Logic approach can help to explore Iron ore deposits?
Author: B.Poovalinga Ganesh, S.Rajendra, A.Thirunavukkarasu, K.Maharani
Editor: Prof B.L.Deekshatulu
Year: 2009
Publisher: Indian Society of Remote Sensing, Vol 37, No 1, March 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Remote Sensing
Keywords: Fuzzy logic, Iron ore formation mapping, LISS IV
Abstract: Uncertainties in Geovisualization/ GI Science spatial data can minimize but not completely provided by the different image processing classification methods. The methods of image processing techniques are purely dependent on spectral signature values. In the present study, we collected end member spectral values from both satellite data and field signatures and applied in supervised and fuzzy classification of image processing techniques to discriminate the iron ore formations and associated land cover features of part of Godumalai hill region of Salem District, Tamil Nadu State, India. The result of analysis shows that the fuzzy classified image discriminated the iron formation with better appearance and distinct boundary between the associated features than the analyses results obtained by supervised methods.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51563
Title: Serial propagation in Terminalia bellirica (Roxb)
Author: V.K.W.Bachpai, M.Ganesan and Santan Barthwal
Editor: Dr.V.R.R. Singh
Year: 2009
Publisher: The Indian Forester, Vol 135, June 2009, No 6
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: Medicinal plants, herbal drugs, pharmaceutical companies, Terminalia bellirica (Roxb)-Vibhitaki, Triphala
Abstract: Medicinal plants have had commercial significance since millennia, but since the last few decades, their significance has increased remarkably with the growing popularity of herbal drugs (Rath, 2005). According to an assessment of the World Health Organization, about 80% of the world ' s population in developing countries depends on traditional medicines prepared from plants for their primary health care needs (Farnsworth and Soejarto, 1991). Reports indicate that there are 90 popular medicinal plants which are used by different pharmaceutical companies in various drugs. In India, 72% of medicinal plants from wild resources are used destructively-either the full plant (16.3%) or reproductive parts (22.1%) or tubers root or stem (39.5%) (Shankar and Majumdar, 1995). Terminalia bellirica (Roxb), a large deciduous tree known as ' Vibhitaki ' in Ayurveda is found in deciduous forests throughout the greater parts of India and Myanmar (Troup, 1921). It grows scattered in the sub-Himalayan tracts, chiefly in the moist valleys (Prakash et al., 1977). T.bellirica has been reported to exhibit anti-HIV (human immuno-deficiency virus), anti-malarial (against Plasmodium falciparum strain 3 D 7) and antifungal (against Penicillium expansum and Candida albicans) activities in-vitro (Valsaraj et al., 1977). The secondary metabolites Terpenoid bellericagenin, ester glycosides and the methyl ester of belleric acid from bark of T. bellirica were reported to possess moderate anti-microbial activity (Nandy et al., 1997). The famous ayurvedic preparation "Triphala", which contains the secondary metabolites, has a wide range of uses in headache, leucorrhoea, liver diseases, gastro-intestinal complaints and mainly used as laxative.
Greater medicinal properties, extensive use (Anon., 2000) and rise in popularity as herbal medicine threaten the survival of T. bellirica. Lack of standard scientific approach for perpetuation of desirable genotypes by vegetative means is a hindrance in promoting and popularizing the cultivation of this species. Vegetative propagation techniques have traditionally been developed and used for the production of horticultural cultivars. It is also increasingly used for the mass production of genetically improved planting stock in forestry (Jinks, 2003). There is no report regarding the rooting of woody branch cuttings directly collected from mature trees of T. bellirica. Failure in rooting of woody cuttings has been reported by Bharadwaj et al. (1993). However, in T.bellirica (a difficult to root species) rooting of cuttings can be improved by rejuvenation, i.e. by transition from the mature to the juvenile form of a plant (Greenwood, 1987; Hartmann et al., 2002) using ' Serial propagation technique ' . The aim of this note is to describe the main findings and to discuss the development of further research on this topic, with a hypothesis that rejuvenated material for cuttings could increase the propagation success of T.bellirica significantly.
Location: 241
Literature cited 1: None
Literature cited 2: None