Research

Ongoing Research Schemes
  1. Creating GIS database of soil nutrient status and generating nutrient maps with cadastral base in six selected blocks of Tamil Nadu, Sponsor: Department of Agriculture, Govt of Tamil Nadu
    Scientists involved: Dr.R.Sivasamy, Dr.R.Jagadeeswaran, Dr.K.P.Ragunath and Dr.R. Kumaraperumal,  Year of start :    September 2013
  2. Developing Spectral Library and spectral indices for early prediction of crop nutrient deficiencies, Sponsor: Department of Science & Technology -SERB, Govt of India
    Scientist involved: Dr.R.Jagadeeswaran  Year of start :    July 2013
  3. Region based recommendation to improve Coconut production in Tamil Nadu through Remote Sensing and GIS, Sponsor: Coconut Development Board  (CDB), Govt of India Scientists involved: Dr.Balaji Kannan and Dr.K.P.Ragunath,  Year of start :    December 2012
Completed projects
  1. Monitoring and optimizing farm nutrient flows and stocks as the basis for INM towards breaking crop yield barrier, Sponsor: National Agricultural Development Project (NADP)
    Scientists involved: Dr.R.Sivasamy and Dr.R.Jagadeeswaran, Period: 2011-13
  2. Advanced Technique for soil moisture and applications using Microwave Remote Sensing data, Sponsor: Space Application Centre, ISRO
    Scientists involved: Dr.R.Jagadeeswaran and Dr.R.Sivasamy; Period: 2011-13
  3. Hyperspectral study of soil minerology, nutrient stress and crop residue cover, Sponsor: National Remote Sensing Centre, ISRO
    Scientists involved: Dr.R.Sivasamy, Dr.R.Krishnan and Dr.R.Jagadeeswaran ; Period: 2010-12
Findings from Research done at Remote Sensing Unit/ Department
  • Spectral response studies in different field crops were carried out to estimate plant height, LAI, dry matter production, chlorophyll and N content of leaf and make varietal discrimination.
  • Mapping of land degradation, gypsum mined area and cement factory polluted area were done using remote sensing data. 
  • A Mission Mode (National Agricultural Technological Project) scheme on “Land Use Planning for Management of Agricultural Resources in Coastal Agro-ecosystem” was operated and options for rational and scientific land use planning for different agro-ecological sub-regions of coastal ecosystem by integrating geo-referenced bio-physical information and socio-economic attributes for maximum and sustained production were identified.
  • A study was carried out in fifteen revenue (coastal) villages of Nagapattinam and Kivalur taluks of Nagapattinam district with an objective to study soil, land use and water quality using Remote Sensing and GIS tools. Field specific technological options were identified and these technologies were implemented by the Agricultural Engineering Department in these villages.  
  • Land use, land cover and mapping of soil resources in various watersheds in Tamil Nadu were  done
  • Soil mapping at 1:50,000 scale using PAN merged LISS-III data was completed for entire Tamil Nadu.
  • By employing Geographic Information System, farm level optimum land use options, fertilizer management options for sugarcane growing villages, spatial variability assessment for precision farming were made. Thematic maps on slope, depth, soil reaction, calcium carbonate and CEC classes, status of macronutrients were generated.
  • A GIS based system is developed for selecting alternate crops in the context of low river water availability in Cauvery delta.
  • Fifteen reference soils representing seven agroclimatic zones of Tamil Nadu were collected and exhibited as monolith with database. The project was funded by ISRIC, The Netherlands. This soil reference centre provides soil resource information for students, scientists, farmers and planners. Crops and technologies suitable for these soils are also listed for quick reference.
  • Strategies and options for rational and scientific land use planning for different agro-ecological sub-regions of coastal ecosystem for maximum and sustained production were developed
  • TNAU (Remote Sensing Division) served as lead centre with a network of ten co-operating centers located in the coastal regions of the country for suggesting land use options for coastal agro ecosystem
  • Erosion model using spatial data on soils, land use and crop cover, weather and topological features was developed using GIS techniques. The model predicts soil erosion for a given storm event and was tested in Dharmapuri district and was found useful.
  • Land Resource Inventory and GIS database at cadastre level for Farm level planning in Nagapattinam, Cuddalore and Sivagangai blocks  Districts were completed. 
  • Similar studies are taken up in Thirumanur, Annur, Pappireddipatti, Ottanchatram, Uthangarai, Rasipuram, Perambalur, R.S.Mangalam, Veerapandi and Gingee blocks in Ariyalur, Coimbatore, Dharmapuri, Dindugal, Krishnagiri, Namakkal, Perambalur, Ramnad, Salem and Villupuram districts, respectively.  Agricultural Engineering Department and Department of Agriculture, Government of Tamil Nadu are collaborating.

Soil Map of Annur Village of Coimbatore District


Model output of erosion estimate based on peak rainfall event recorded at Dharmapuri district, Tamil Nadu




Map showing the mined area near Coimbatore


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