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Dr. RAJANNA G.A

Dr. RAJANNA G.A
Name Dr. RAJANNA G.A
Designation Senior Scientist
Division Crop Production & Post Harvest Technology
Qualification Ph.D.
Specialisation Agronomy
Contact rajanna.ga6@gmail.com
Areas of Interest Irrigation management, Nutrient management, Life Cycle assessment

  1. Rajanna GA, Anapalli SS, Reddy KN, Gowda PH. Quantifying the interactive effects of temperature, CO₂, and irrigation levels on peanut yield and quality. Plant Stress. 2025;100959. doi:10.1016/j.stress.2025.100959.

  2. Rajanna GA, Anapalli SS, Delhom CD, Puppala N, Reddy KN. Investigating photosynthetic and chlorophyll fluorescence responses to light in peanut acclimated to elevated CO₂ and temperature. Photosynth Res. 2025;163:29. doi:10.1007/s11120-025-01151-8.

  3. Rajanna GA, Anapalli SS, Ojha M, Puppala N, Reddy KN. Photosynthetic responses to light levels in drought-tolerant novel peanut (Arachis hypogaea L.) genotypes. Sci Rep. 2025;15:25032. doi:10.1038/s41598-025-10978-z.

  4. Rajanna GA, Dass A, Suman A, Babu S, Paramesh V, Singh VK, Upadhyay PK, Sudhishri S. Co-implementation of tillage, irrigation, and fertilizers in soybean: impact on crop productivity, soil moisture, and soil microbial dynamics. Field Crops Res. 2022;288:108672. doi:10.1016/j.fcr.2022.108672.

  5. Rajanna GA, Dass A, Venkatesh P, Choudhary AK, Upadhyay PK, Ajay BC, Francaviglia R, Manjanagouda SS, Umesh MR, Singh VK, Harish MN, Shyam CS. Soil moisture dynamics, rooting traits, crop and water productivity of wheat under different tillage, irrigation, and nutrition conditions. Farming Syst. 2024;2:100087. doi:10.1016/j.farsys.2024.100087.

  6. Rajanna GA, Manna S, Patanjali N, Singh A, Dass A, Mahanta D, Singh VK. Unveiling superabsorbent hydrogel efficacy through modified agronomic practices in a soybean–wheat system under semi-arid regions of South Asia. J Agron Crop Sci. 2024;210:e12730. doi:10.1111/jac.12730.

  7. Rajanna GA, Manna S, Singh A, Babu S, Singh VK, Dass A, Chakraborty D, Patanjali N, Chopra I, Banerjee T, Kumar A, Khandelwal A, Parmar BS. Biopolymeric superabsorbent hydrogels enhance crop and water productivity of a soybean–wheat system in the Indo-Gangetic plains of India. Sci Rep. 2022;12:11955. doi:10.1038/s41598-022-16049-x.

  8. Rajanna GA, Dass A, Singh VK, Choudhary AK, Paramesh V, Babu S, Upadhyay PK, Sannagoudar MS, Ajay BC, Reddy KV. Energy and carbon budgeting in a soybean–wheat system under different tillage, irrigation, and fertilizer management practices in South Asian semi-arid agroecology. Eur J Agron. 2023;148:126877. doi:10.1016/j.eja.2023.126877.

  9. Rajanna GA, Suman A, Venkatesh P. Mitigating drought stress effects in arid and semi-arid agro-ecosystems through bio-irrigation strategies: a review. Sustainability. 2023;15:3542. doi:10.3390/su15043542.

  10. Rajanna GA, Anapalli SS, Reddy KN, Mubvumba P, George J. Possible impacts of elevated CO₂ and temperature on growth and development of grain legumes. Environments. 2024;11:273. doi:10.3390/environments11120273.

  11. Meena HN, Ajay BC, Rajanna GA, Yadav RS, Jain NK, Meena MS. Polythene mulch and potassium application enhance peanut productivity and biochemical traits under sustained salinity stress conditions. Agric Water Manag. 2022;273:107903. doi:10.1016/j.agwat.2022.107903.

  12. Kishor N, Khanna M, Rajanna GA, Singh M, Singh A, Singh S, Banerjee T, Patanjali N, Rajput J, Kiruthiga B. Soil water distribution and water productivity in red cabbage using superabsorbent polymeric hydrogels under different drip irrigation regimes. Agric Water Manag. 2024;295:108759. doi:10.1016/j.agwat.2024.108759.

  13. Gopinath KA, Rajanna GA, Kumari VV, Singh VK, Ajay BC, Awasthi NK, Mishra V, Sukumaran S, Venkatesh G, Rajkumar B. Exploring the use of POLY4 for improving productivity, peanut quality, and soil properties in southern India. Front Plant Sci. 2024;15:1448909. doi:10.3389/fpls.2024.1448909.

  14. Upadhyay PK, Singh VK, Rajanna GA, Dwivedi BS, Dey A, Singh RK, Rathore SS, Shekhawat K, Babu S, Singh T, Kumar Y, Singh C, Rangot M, Kumar A, Sarkar S, Dash S, Rawat S. Combined effects of nano-fertilizers and conventional fertilizers on crop productivity, profitability, and soil well-being. Front Sustain Food Syst. 2023;7:1260178. doi:10.3389/fsufs.2023.1260178.

  15. Korav S, Rajanna GA, Yadav DB, Paramesha V, Mehta CM, Jha PK, Singh S, Singh S. Impacts of mechanized crop residue management on rice–wheat cropping systems: a review. Sustainability. 2022;14:15641. doi:10.3390/su142315641.

  16. Rajanna GA, Dhindwal AS, Nanwal RK. Effect of irrigation schedules on plant–water relations, root traits, grain yield, and water productivity of wheat (Triticum aestivum L.) under various crop establishment techniques. Cereal Res Commun. 2017;45(1):166–177. doi:10.1556/0806.44.2016.051.

  17. Rajanna GA, Dhindwal AS. Water dynamics, productivity, and heat-use efficiency responses in wheat (Triticum aestivum) to land configuration techniques and irrigation schedules. Indian J Agric Sci. 2019;89(6):912–919.

  18. Rajanna GA, Dhindwal AS, Narender, Patil MD, Shivakumar L. Alleviating moisture stress through irrigation scheduling and crop establishment techniques on productivity and profitability of wheat (Triticum aestivum) under semi-arid conditions of western India. Indian J Agric Sci. 2018;88(3):372–378.

  1. Dass A, Choudhary AK, Sudhishri S, Rajanna GA. Precision crop and resource management. New Delhi: ICAR–Indian Agricultural Research Institute; 2019. p. 228+xii. ISBN: 978-93-83168-45-3.

  2. Rajanna GA, Paramesha V, Bhaskar S. Agronomy at a glimpse. New Delhi: Jain Brothers Publication; 2017. p. 391. ISBN: 978-81-83602-4-33.

  3. Kumar B, Upadhyay PK, Rajanna GA, Singh RK, Sagar D, Paramesh V, Singh R. Agronomy booster for ICAR-JRF, SRF, NET and ARS. New Delhi: Sharma Publishers and Distributors; 2021. p. 227. ISBN: 978-93-82310-50-1.

  4. Nanwal RK, Rajanna GA. Rainfed agriculture. New Delhi: New India Publishing Agency; 2018. p. 331. ISBN: 978-93-86546-04-3.

  5. Rathore SS, Shekhawat K, Rajanna GA, Upadhyay PK, Singh VK. Crop diversification for resilience in agriculture and doubling farmers’ income. New Delhi: ICAR–Indian Agricultural Research Institute (IARI), Pusa; 2019. p. 210. ISBN: 978-93-83168-42-2.

  6. Singh VK, Rathore SS, Singh T, Rajanna GA. Good agricultural practices for enhancing resource use efficiency and farm productivity. New Delhi: ICAR–Indian Agricultural Research Institute (IARI), Pusa; 2019. p. 200. ISBN: 978-93-83168-41-5.

  7. Nanwal RK, Rajanna GA. Rainfed agriculture. New Delhi: CRC Press; New India Publishing Agency; 2023. p. 331. doi:10.4324/9781003364917.

  1. Received Best Oral Presentation Award at the XXII National Symposium on “Agronomy for Resilient Production System and Livelihood Security”, held at ICAR–Central Coastal Agricultural Research Institute, 22–24 November 2023.

  2. Received Best Oral Presentation Award at the First International Conference (ICRA-2022) on “Reimagining Rainfed Agro-ecosystems: Challenges and Opportunities”, held at ICAR–Central Research Institute for Dryland Agriculture (CRIDA), Hyderabad, Telangana, India, 22–24 December 2022.

  3. Received Best Oral / Rapid Fire Presentation Award at the Fifth International Agronomy Congress (IAC) on “Agri-Innovations to Combat Food and Nutrition Challenges”, held at Professor Jayashankar Telangana State Agricultural University (PJTSAU), Hyderabad, Telangana, India, 23–27 November 2021.

  4. Received Second Best Poster Presentation Award at the Fourth International Agronomy Congress, held at ICAR–Indian Agricultural Research Institute (IARI), New Delhi, India, 22–26 November 2016.
    (Certificate dated 23.11.2016)

  5. Received Certificate of Appreciation from the Ministry of Higher Education, Islamic Republic of Afghanistan, for teaching and guiding the second batch of M.Sc. (Agronomy) students of Afghanistan National Agricultural Sciences and Technology University (ANASTU) on 14 September 2018.

  6. Received Second Best Oral Presentation Award at the Second International Conference on “Advances in Agricultural, Biological and Applied Sciences for a Sustainable Future (ABAS-2018)”, held during 20–22 October 2018.
    (Ref: Certificate ATD/ABAS-2018)

  7. Received the Young Scientist Award – 2018 from the Agricultural Technology Development Society (ATDS) on the occasion of the Second International Conference on “Advances in Agricultural, Biological and Applied Sciences for a Sustainable Future (ABAS-2018)”, held during 20–22 October 2018.

  8. Received Certificate of Excellence in Reviewing (2020) from the Journal of Experimental Agriculture International, in recognition of outstanding contribution to the quality of the journal.
    (Ref: Certificate No. SDI/HQ/PR/Cert/58773/GAR)

  9. Received Certificate of Merit for securing Second Position in the Ph.D. (Agriculture) Programme during the academic session 2014–2015 from Chaudhary Charan Singh Haryana Agricultural University (CCSHAU).

PI

  1. Effect of Poly4 (polyhalite) on yield and quality of rainfed groundnut and on soil properties in semi-arid Alfisols of Telangana and arid Alfisols of Andhra Pradesh.
    (Externally funded)

Co-PI

  1. Integrated crop and resource management for enhanced productivity and profitability.
    (Institute funded)

  2. Development of technologies for realizing the production potential of new varieties and hybrids of vegetable crops.
    (Institute funded)

  3. Agri-residue and biomass management.
    (Institute funded)

  4. Management of drought in groundnut at Anantapur and adjacent areas.
    (Institute funded)

  5. Optimization of mineral nutrition in groundnut for improved human and soil health.
    (Institute funded)

  6. Niche area of excellence – plant-source-based environmentally safe crop protection and production technologies: development and capacity building.
    (Externally funded)

  7. Development of a solar-powered variable-swath herbicide applicator robot for high-value vegetable crops.
    (Externally funded)

  8. Effect of nano-fertilizer application on nutrient-use efficiency and soil health under maize–wheat and pearl millet–mustard cropping systems.
    (Contract research project)

  9. All India Coordinated Research Project (AICRP) on Groundnut.
    (ICAR funded)