भा.कृ.अ.प. - भारतीय कृषि अनुसंधान संस्थान | ICAR-Indian Agricultural Research Institute

Dr Nayan Ahmed


Field of Specialisation : Soil Science-Pedology: Pedogenesis; Soil Mineralogy; Soil resource/ degradation mapping using remote sensing and GIS, Spatial variability of soils.

Dr Nayan Ahmed

Principal Scientist

M.Sc. : University of Calcutta

Ph.D : University of Calcutta

Google Scholar

PG School, Faculty Disciplines : Soil Science and Agricultural Chemistry

No. of Students Guided : -    M.Sc :   6

   Ph.D :   5

Top 10 Publications having NAAS rating 6 and above with first or corresponding author only

  1. Lungmuana, Ahmed, N., Gorai, T. and Datta, S.C. (2018) Soil carbon stability assessment by humus desorption using simple first order exponential equation in a toposequence of Western Himalayan region. National Academy Science Letters. doi10.1007/s40009-018-0609-2.
  2. Gorai, T., Ahmed,N., Patra, A.K., Sahoo, R.N., Sarangi,A., Meena, M.C. and Sharma R.K. (2017). Site Specific Nutrient Management of an Intensively Cultivated Farm Using Geostatistical Approach. Proceedings of the National Academy of Sciences, Biological Sciences.87, 477-488.
  3. Cresser, S.M, Ahmed,N., Smart,R.P, Arowolo T., Calver,J.L.and Chapman,P. (2006) Predicting Gran alkalinity and calcium concentrations in river waters over a national scale using a novel modification to the G-BASH model. Environmental Pollution 143, 361-366.
  4. Ahmed,N., Varadachari,C., Ghosh,K. (2002) Soil clay-humus complexes I, alkali dissolution, TEM and XRD studies. Australian Journal of Soil Research, 40: 691-703.
  5. Ahmed, N., Varadachari,C., Ghosh,K. (2002) Soil clay-humus complexes II, Bridging cations and DTA studies. Australian Journal of Soil Research, 40: 705-713.
  6. Mhalla, B, Ahmed, N., Datta, S.P.,Golui, D, Singh, Man and Shrivastava, M. (2021) Solubility Relationship of Metals in Acid Soils of Kumaon Himalaya Region of India. Communications In Soil Science And Plant Analysis. https://doi.org/10.1080/00103624.2021.1928170.
  7. Das Abhishek, Ahmed, Nayan, Ray Prasenjit, Ray Sanjay Kumar, Purakayastha, Tapan Joyti , Biswas Sunanda, Bhattacharyya, Ranjan, Bandyapadhyay Kali Kinkar (2021). Soil genesis and classification of some tea-growing soils of upper Brahmaputra valley of Assam. The Indian Journal of Agricultural Sciences. (Accepted).

Patent / Technologies / Methodologies / System etc. (Upto Five) :

  1. Conceptual framework and data base management for long-term effect of rice cultivation on the mineral suite and ecology of the region
  1. Generation of spatial variability maps for soil fertility parameters of IARI farm.
  1. A concept on �Estimation of soil parameters and soil zonation using hyperspectral data
  1. Pedo-geochemical evolution of soils at different topographic positions in Almora district, Uttarakhand.
  1. Methodologies for clay-humus stability in different soil orders.

Awards / Recognitions / Fellowship (Upto Five) :

  1. Indian Society of Soil Science Zonal Award (1997) from North Zone for best PhD dissertation.
  1. Received Commonwealth Academic Staff Fellowship Award (2004) from the Association of Commonwealth Universities, U.K..
  1. Elected Fellow (2018)of the Clay Minerals Society of India.