Rajakumar GR

@uasd.in

Assistnt Professor, Department of Soil Science, Agriculture College, Dharwad
University of Agricultural Science, Dharwad

Rajakumar GR


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https://researchid.co/rajakumargr
It is me the soil. I suggest farmers for composting first and then apply to the main field. It will save me and our earth from the danger of methane. I have worked through this body on the development of a soil testing kit and soil health card (Excel format auto recommendations). And folmulated a DEXCELMAP. One can prepare a soil fertility map by Dexcel map, using an excel sheet, word and powerpoint . To prepare a map there is no need of having softwares, like ARCGIS / ERDAS or others.

EDUCATION

M.Sc. Agri. and Ph.D. in Soil Science and Agricultural Chemistry

RESEARCH, TEACHING, or OTHER INTERESTS

Agricultural and Biological Sciences, Soil Science, Plant Science, Analytical Chemistry
421

Scholar Citations

9

Scholar h-index

9

Scholar i10-index

RECENT SCHOLAR PUBLICATIONS

  • Validation of leaf area index of maize for graded levels of fertilizers using conventional and artificial intelligence techniques
    M BINDU, MP POTDAR, S RAJKUMARA, BNA KUMAR, GR RAJAKUMAR
    Journal of Farm Sciences 38 (04), 379-384 , 2025
    2025
  • Assessing of soil quality index of Holihosur sub-watershed using principal component analysis and geo-statistical techniques
    V Maunika, VB Kuligod, SS Gundlur, MV Manjunatha, GR Rajakumar, ...
    Plant Science Today 12, 10479 , 2025
    2025
  • Impact of vrikshayurveda-based liquid organic manures on soybean yield, economics and soil health under organic and natural farming practices
    KB PUJARI, CP CHANDRASHEKHAR, RB NEGALUR, GR RAJAKUMAR
    Journal of Farm Sciences 38 (03), 237-244 , 2025
    2025
  • Effect of buckwheat (Fagopyrum esculentum Moench.) intercropping on growth, yield and economics of pigeonpea [Cajanus cajan (L.) Millsp.] under rainfed conditions
    MSB CHOWDARY, P PRIYA, P ASHOKA, GR RAJAKUMAR, A BIRADAR
    Journal of Farm Sciences 38 (03), 233-236 , 2025
    2025
  • Optimizing productivity of rice (Oryza sativa L.) through site specific nutrient management
    AK KEERTHI, GR RAJAKUMAR, BR JAGADEESH, P PRIYA, JR DIWAN
    Journal of Farm Sciences 38 (01), 48-51 , 2025
    2025
  • Optimizing sowing windows and nutrient levels for higher productivity of browntop millet (Brachiaria ramosa L.)
    HJ GOPALGOWDA, P ASHOKA, BS YENAGI, GR RAJAKUMAR, ...
    Journal of Farm Sciences 38 (01), 33-36 , 2025
    2025
  • Spatial Analysis of Land Resources for Enhancing Watershed Resilience: A Study from Pashupathihal-4 Micro-Watershed, Kundgol Taluk, Dharwad District, Karnataka, India
    JH KN, BR Jagadeesh, M MV, SS Gundlur, GR Rajkumar, P Priya
    Journal of Scientific Research and Reports 31 (5), 752-772 , 2025
    2025
  • Study of Different Decomposers with Biochar in Sugarcane Trash Management for Enhancing Ratoon Sugar Cane (Saccharum officinarum. L.) Yield
    P Ashoka, GR Rajakumar
    Journal of Experimental Agriculture International 47 (1), 497-502 , 2025
    2025
  • Digital soil fertility mapping of a Pashupathihal-2 micro-watershed in Kundgol taluk, Karnataka state through GIS
    HKN Jakir, BR Jagadeesh, MV Manjunath, SS Gundlur, GR Rajkumar, ...
    2025
  • RESPONSE OF GROUNDNUT (ARACHIS HYPOGEA L.) TO FOLIAR APPLICATION OF NANO ZINC OXIDE AND NANO CALCIUM OXIDE
    M MN, R BASAVARAJAPPA, BS YENAGI, GR RAJAKUMAR
    INTERNATIONAL JOURNAL OF RESEARCH 8 (3), 11-16 , 2025
    2025
  • Assessing different SSNM techniques to recommend optimum fertilizer dose under transplanted rice (Oryza sativa L.)
    AK Keerthi, GR Rajakumar
    INTERNATIONAL JOURNAL OF RESEARCH 8 (2), 135-140 , 2025
    2025
  • Development of Soil Test Crop Response (STCR) and STCR-Integrated Plant Nutrition Supply (IPNS) Models to Achieve Targeted Yields of Maize (Zea mays L.) in Vertisols of …
    KJ Reddy, CP Chandrashekara, B Rajyalakshmi, DP Biradar, ...
    Indian Journal of Agricultural Research 59 (1) , 2025
    2025
    Citations: 1
  • Study of Groundwater and Its Quality Parameters on Soil Nutrient Dynamics in Northern Parts of Ranebennur Taluk, Haveri District, Karnataka, India
    JH KN, BR Jagadeesh, M Biradar, N Malappanavar, VR Channavar, ...
    International Journal of Environment and Climate Change 14 (9), 406-423 , 2024
    2024
    Citations: 1
  • DRIS norms for identification of yield limiting nutrients in acid lime orchards of Viajaypura district of Karnataka
    AN Jadhav, B Savita, RB Negalur, GR Rajkumar, MS Heena, SS Anjum
    International Journal of Innovative Horticulture 13 (1), 96-104 , 2024
    2024
  • Impact of graded levels of fertilizer application on soil fertility, nutrient uptake, growth and yield of fodder maize (Zea mays L.)
    KJ Reddy, CP Chandrashekara, B Rajyalakshmi, DP Biradar, ...
    The Society Of Agricultural Professionals 15 (2), 218-221 , 2023
    2023
  • Agrochemicals-Manures, Fertilizers and Growth regulators
    RGRS Patil
    International Books and Periodicals Supply Service, Delhi , 2023
    2023
  • Nano Urea Ondu Vastvathe
    NGR Rajakumar GR
    Krishi Munnade 36 (1), 31-32 , 2023
    2023
  • GROUNDWATER QUALITY CHARACTERIZATION IN NORTHERN PARTS OF RANEBENNUR TALUK, HAVERI DISTRICT, KARNATAKA, INDIA
    KNJ Hussain, BR Jagadeesh, GR Rajkumar, HM Santhosh
    2022
  • Dalchinni (Chakke) Masale Beleyalli Yashassu Kanda Gopal Achar Badiger.
    Santhosh HM and Rajakumar GR
    Krishi Munnade 35 (11), 27-28 , 2022
    2022
  • Effect of Soil Test Crop Response (STCR) and STCR–Integrated Plant Nutrition System (IPNS) Based Fertilizer Prescription Equations on Maize Productivity, Economics and Soil.
    GRR 12. Jaisimha Reddy K, CP Chandrashekara, DP Biradar
    International Journal of Plant & Soil Science 34 (24), 1-8 , 2022
    2022
    Citations: 4

MOST CITED SCHOLAR PUBLICATIONS

  • Comparative effects of drip and furrow irrigation on the yield and water productivity of cotton (Gossypium hirsutum L.) in a saline and waterlogged vertisol
    D Rajak, MV Manjunatha, GR Rajkumar, M Hebbara, PS Minhas
    Agricultural water management 83 (1-2), 30-36 , 2006
    2006
    Citations: 166
  • Studies on forms and distribution of micronutrients in paddy soils of Tungabhadra project area, Karnataka
    GR Rajkumar
    M. Sc.(Agri.) Thesis , 1994
    1994
    Citations: 42
  • Effect of salinity stress on seed yield through physiological parameters in sunflower genotypes
    M Hebbara, GR Rajakumar, G Ravishankar, CV Raghavaiah
    Helia 26 (39), 155-160 , 2003
    2003
    Citations: 38
  • Effect of drip and surface irrigation on yield and water-production efficiency of brinjal (Solanum melongena) in saline Vertisols
    MV Manjunatha, GR Rajkumar, M Hebbara, G Ravishankar
    Indian Journal of Agricultural Sciences 74 (11), 583-587 , 2004
    2004
    Citations: 32
  • Micronutrient distribution in paddy soils in relation to parent material and soil properties.
    GR Rajakumar, CV Patil, SS Prakash, NA Yeledhalli, KK Math
    1996
    Citations: 26
  • Integrated disease management of twister disease of onion
    GM Hegde, Rajkumar, GR, Jaware Gouda
    Ext. Bull. Uni. Agric. Sci. Dharwad (India) , 2012
    2012
    Citations: 15
  • STUDIES ON FORMS AND DISTRIBUTION OF IVIICRONUTRIENTS IN PADDY SOILS OF TUNGABHADRA PROJECT-KARNATAKA
    GR Rajakumar
    1994
    Citations: 15
  • Effect of chemical herbicides on weed management in allium sativum L.(garlic) and its yield
    T Ganapathi, MR Ravikumar, GR Rajakumar
    Int Res J Pure Appl Chem 21, 279-87 , 2020
    2020
    Citations: 11
  • Effect of Fly Ash on Growth and Yield of Crops with Special Emphasis on Heavy Metals and Radionuclide’s
    GRSVP Rajakumar
    Int. J. Curr. Microbiol. App. Sci 8, 127-137 , 2019
    2019
    Citations: 10
  • Effect of fly ash on growth and yield of crops, nutrient uptake and soil properties with special emphasis on toxic elements and radionuclides
    GR Rajakumar
    University of Agricultural Sciences , 2000
    2000
    Citations: 9
  • Distribution of forms of iron in relation to the properties of rice soils.
    GR Rajkumar, CV Patil, SS Prakash, NA Yeledhalli
    1997
    Citations: 9
  • Processing of black pepper (Piper nigrum L.) through solarisation.
    T. Ganapathi, S.V. Patil, Rajakumar G.R.
    Int.J. Agri.Sci., 14 (1), 211-214 , 2018
    2018
    Citations: 6
  • New technology in Bt cotton transplanting system
    MN Basavennappa, GR Rajakumar, DP Biradar
    Krishi Munnade 22 (3), 7-8 , 2009
    2009
    Citations: 6
  • Integrated Disease Management of Twister Disease of Onion
    GM Hegde, GR Rajkumar, G Jaware
    Universities for Agricultural Sciences: Dharwad, India , 2012
    2012
    Citations: 5
  • Effect of Soil Test Crop Response (STCR) and STCR–Integrated Plant Nutrition System (IPNS) Based Fertilizer Prescription Equations on Maize Productivity, Economics and Soil.
    GRR 12. Jaisimha Reddy K, CP Chandrashekara, DP Biradar
    International Journal of Plant & Soil Science 34 (24), 1-8 , 2022
    2022
    Citations: 4
  • DEXCEL Map–A New Approach to Prepare Soil Fertility Map
    GR Rajakumar, SV Patil
    Int. J. Curr. Microbiol. App. Sci 6 (7), 738-744 , 2017
    2017
    Citations: 4
  • Response of cotton to drip and surface irrigation in saline vertisiols
    D Rajak, M MV, R GR, R G
    Journal of Agriculture Enggineering 47 (2), 15-17 , 2010
    2010
    Citations: 4
  • Characterization of fly ash for utilization in agriculture
    CV Patil, SS Prakash, NA Yaledhalli, GR Rajkumar
    Proceedings of the National seminar on Fly ash characterization and its … , 1999
    1999
    Citations: 4
  • Optimization of seed rate and planting geometry for genotypes of browntop millet (Brachiaria ramose L.).
    GRR RS Hulakund, P Ashoka, MP Potdar
    Journal of Farm Sciences , 35 (1), 52-57 , 2022
    2022
    Citations: 3
  • Evaluation of Bt cotton with local hybrid cotton variety in Haveri district of Karnataka
    MV Nagaraja, T Gabapathi, GR Rajakumar
    International Journal of Scientific Research 3 (10), 1-2 , 2014
    2014
    Citations: 3

INDUSTRY EXPERIENCE

Worked in Granulation Fertilizer Industry in Maharshtra, Worked in Sugar Industry, Karnataka

SOCIAL, ECONOMIC, or ACADEMIC BENEFITS

Education benefitted in all respects