M.Sc. : Indian Agricultural Research Institute, New Delhi in 1990
Ph.D : Indian Agricultural Research Institute, New Delhi in 2001
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PG School, Faculty Disciplines : Agricultural Physics
No. of Students Guided : - M.Sc : 04
Ph.D : 06
Top 10 Publications having NAAS rating 6 and above with first or corresponding author only
- Chakraborty, D., Sehgal, V. K.*, Dhakar, R., Ray, M., Das, D. K. (2020). Increase in spatial spread of extreme warm day temperature events: regional to national perspective for India (1951-2014). Current Science 118(12): 1930 - 1938 [NAAS: 6.76]
- Chakraborty, D., Sehgal, V. K.*, Dhakar, R., Ray, M., Das, D. K. (2019). Spatio-temporal trend in heat waves over India and its impact assessment on wheat crop. Theoretical and Applied Climatology, 138(3-4), 1925-1937. [NAAS: 8.32]
- Dhakar, R., Sehgal, V. K.*, Chakraborty, D., Sahoo, R. N., Mukherjee, J. (2019). Field scale wheat LAI retrieval from multispectral Sentinel 2A-MSI and LandSat 8-OLI imagery: effect of atmospheric correction, image resolutions and inversion techniques. Geocarto International, 1-21. [NAAS: 7.76]
- Chakraborty, D., Sehgal, V. K.*, Dhakar, R., Varghese, E., Das, D. K., Ray, M. (2018). Changes in daily maximum temperature extremes across India over 1951-2014 and their relation with cereal crop productivity. Stochastic environmental research and risk assessment, 32(11), 3067-3081. [NAAS: 8.67]
- Sehgal, V. K.*, Dhakar, R. (2016). Geospatial approach for assessment of biophysical vulnerability to agricultural drought and its intra-seasonal variations. Environmental monitoring and assessment, 188(3), 197. [NAAS: 7.80]
- Sehgal, V.K.*, Dhakar, R. (2016). Inversion of radiative transfer model for retrieval of wheat biophysical parameters from broadband reflectance measurements. Information Processing in Agriculture 3(2): 107 - 118
- Saha, S., Sehgal, V.K.*, Chakraborty, D., Pal, M. (2015). Atmospheric carbon dioxide enrichment induced modifications in canopy radiation utilization, growth and yield of chickpea [Cicer arietinum L.)]. Agricultural and Forest Meteorology 202, 102 - 111. [NAAS: 10.04]
- Dhakar, R., Sehgal, V. K., & Pradhan, S. (2013). Study on inter-seasonal and intra-seasonal relationships of meteorological and agricultural drought indices in the Rajasthan State of India. Journal of arid environments, 97, 108-119. [NAAS: 7.99]
- Saha, S., Sehgal, V.K., Nagarajan, S., Pal, M. (2012). Impact of elevated atmospheric CO2 on radiation utilization and related plant biophysical properties in pigeon pea (Cajanus cajan L.). Agricultural and Forest Meteorology 158, 63- 70. [NAAS: 10.04]
- Sehgal, V.K., Jain, S., Aggarwal, P.K., Jha, S. (2011). Deriving Crop Phenology Metrics and Their Trends Using Times Series NOAA-AVHRR NDVI Data. Journal of the Indian Society of Remote Sensing 39 (3), 373-381. [NAAS: 6.89]
Patent / Technologies / Methodologies / System etc. (Upto Five) :
- Estimating pollutants from crop residue burning by thermal remote sensing
- Drought vulnerability assessment and mapping
- Retrieval of crop biophysical parameters by inversion of radiative transfer model
- Assimilation of remote sensing into crop simulation model for spatial growth and yield assessment
- System for real-time monitoring of crop condition using satellite remote sensing
Awards / Recognitions / Fellowship (Upto Five) :
- IARI Best Teacher Award for year 2015
- Jawaharlal Nehru Award for P.G. Outstanding Doctoral Thesis Research (NRM) for year 2002
- Expert Committee Member of MoA&FW for formalizing national guidelines on Drought Management
- Fellow of the Indian Society of Agrophysics in 2023
- Lifetime Achievement Award of Graphic Era (Deemed to be University), Dehradun