

Dr. Rajashekara H
Senior Scientist (Plant Pathology)
Leading research in plant pathology with a focus on diagnosis and molecular characterization of cashew pathogens, integrated disease management, microbiome research, and sustainable strategies for improving cashew health and productivity.
Qualification
Ph.D. (Plant Pathology)
Year of Birth
01 July 1985
Present Position
Senior Scientist
Division
Plant Pathology
Mobile
15+
Years of Research53
Research Papers24
Books & Chapters2
Major RecognitionsAbout the Scientist
Brief Work Experience
Professional Summary
Dr. Rajashekara H. is a Plant Pathologist specializing in the diagnosis, molecular characterization and integrated management of plant diseases. His current research focuses on identifying pathogens associated with cashew, understanding disease epidemiology, and developing sustainable disease management strategies to improve crop health and productivity.
Prior to joining ICAR–Directorate of Cashew Research, he served at ICAR-VPKAS, Almora, where his research primarily focused on blast disease of rice and finger millet. He characterized races of Magnaporthe oryzae from the North-Western Himalayan region, developed an efficient spore-drop isolation technique, improved pathogen sporulation methods, and identified effective blast resistance genes for deployment in breeding programmes.
His research also contributed to the identification of blast-resistant rice germplasm registered with NBPGR and the development of several disease-resistant rice, finger millet and maize varieties. He has extensive experience in molecular diagnostics, pathogen characterization and integrated disease management for economically important crop diseases.
At ICAR-DCR, he is actively involved in developing integrated disease management strategies for cashew, investigating the role of the plant microbiome in enhancing productivity, and strengthening disease surveillance through advanced molecular diagnostic approaches.
Projects & Scientific Contributions
Current Projects
Institute Projects
- Survey and diagnosis of diseases occurring in cashew through morphological and molecular characterisation and their management (Principal Investigator).
- Deciphering the role of core floral microbiome in enhancing productivity in cashew (Principal Investigator).
Externally Funded Project
- Establishment of Farmer-Centric Pest Diagnostic and Bio-Control Laboratory to Achieve Sustainable Cashew Health Management funded by RKVY-RAFTAAR, Government of Karnataka (Principal Investigator).
Publication Summary
Representative Research Papers
Race distribution pattern of Magnaporthe oryzae causing rice blast in mid and high altitudes of the North-Western Himalayan region of India.
Rajashekara H., Mishra K. K., Aditya J. P., Pattanayak A. and Kant L. (2023).
First report of Neopestiolopsis clavispora causing cashew leaf blight disease in India.
Rajashekara H., Pandian R. T. P., Mahadevkumar S., Raviprasad T. N., et al. (2023).
Geographic distribution, host preference and phylogenetic relationships among Pyricularia species inciting millet and rice blast disease in India.
Palanna K. B., Vinaykumar H. D., Koti P. S., Jeevan B., Rajashekara H., Raveendra H. R., et al. (2023).
Exploring the diversity of virulence genes in the Magnaporthe population infecting millets and rice in India.
Palanna K. B., Vinaykumar H. D., Prasanna S. Koti, Rajashekara H., Devanna B. N., et al. (2023).
Management of rice blast (Magnaporthe oryzae B. Couch) using bioagents and fungicides under hill rice ecosystem of Uttarakhand state in India.
Rajashekara H., Mishra K. K. and Mishra P. K. (2021).
Awards, Achievements & Professional Recognition
Associate of Karnataka Science and Technology Academy
Recognized as an Associate of the Karnataka Science and Technology Academy (KSTA) for scientific contributions in Plant Pathology.
M. J. Narasimhan Academic Merit Award
Awarded the M. J. Narasimhan Academic Merit Award Commendation for Ph.D. thesis by the Indian Phytopathological Society, New Delhi.
Core Expertise
- Plant Pathology
- Disease Diagnosis
- Molecular Characterization of Pathogens
- Integrated Disease Management
- Rice Blast Disease
- Cashew Disease Management
- Microbiome Research
- Plant–Pathogen Interactions
Laboratory Members
Plant Pathology Laboratory & Field Research Gallery
Showcasing plant pathology laboratories, disease diagnosis facilities, pathogen characterization, field disease surveys, integrated disease management studies, and research activities supporting sustainable cashew health management.





Contact Information
For scientific collaboration, disease diagnosis, research partnerships, postgraduate guidance, plant pathology research, integrated disease management and technical consultation related to cashew diseases and sustainable crop protection.
Office
ICAR – Directorate of Cashew Research
Puttur, Dakshina Kannada,
Karnataka – 574202, India
