Dr. Daljeet Singh Buttar earned his M.Sc (1992) and Ph.D. (1996) degrees in Plant Pathology from PAU, Ludhiana. He joined PAU as Assistant Plant Pathologist in 1997 and became Principal Plant Pathologist in 2010. He has authored over 250 publications, including 88 research papers, 01 teaching manuals, 04 book chapters. He has led 03 research projects including two ongoing projects. He has submitted 41 gene sequences in NCBI database. His efforts led to the inclusion of work on biocontrol and integrated disease management of diseases in PAU’s Package of Practices, along with 43 farmer-focused recommendations, such as resistant varieties/hybrids of cotton, vegetable, chemical and biological control of diseases. Dr Buttar actively involved as major key scientist for the registration of Trichoderma asperellum 2% WP (PAU strain) based biopesticide for the management of foot rot/bakanae disease of basmati rice with CIBRC, Faridabad dated 31.05.2024. He has taught six courses and guided three Ph.D. and five M.Sc. students.

Professional Accomplishments

Research Projects completed

1. DST DAAD. project entitled ‘Characterization and development of application technology for Bacillus subitilis and fluorescent Pseudomonas against soil borne plant pathogens’ funded by DST-DAAD (German Exchange services) 2004-2006 as a Co- PI
2. Studies on inoculum source and economic threshold of cotton leaf curl virus disease, funded by ICAR (CICR, Nagpur) 2009-2011 as a Co-PI
3. Development of weather based prediction model for cotton leaf curl disease and its whitefly Bemisia tabaci in the context of climate change funded by UGC, New Delhi (2013-2016) as a PI 

Research Publications:

1. Singh Gurveer, Buttar Daljeet Singh and Choudhary Ajay (2025). Biological control using the potent native strain of Bacillus subtilis and Bacillus amyloliquefaciens against potato common scab.  AMA, Agricultural Mechanization in Asia, Africa and Latin America (AMA) 56 (1): 19999 -20015. (NASS rating: 6.40)
2.  Aulakh, Sukhman Kaur, Buttar Daljeet Singh, Choudhary Ajay Kumar, Atri. Ashlesha and Brar Gurveer Singh (2025). Bacillus siamensis strain B9 suppresses Sclerotinia stem rot in Egyptian clover. Biocontrol: https://doi.org/10.1007/s10526-025-10314-4. (NAAS rating:8.20)
3. Kaur Manjeet, Atri Ashlesha, Hunjan Mandeep Singh, Singh   Daljeet and Sohu R S (2024). Status and characterization of Sclerotinia species causing stem rot in Egyptian clover. Indian Phytopathology 77:717–726. (NASS rating: 5.97)
4. Geetika, Buttar Daljeet Singh, Choudhary Ajay Kumar and Singh Narinder (2024). Management of Fusarium wilt of watermelon (Citrullus lanatus) using Bacillus subtilus and Bacillus cereus.  Indian Journal of Agricultural Sciences 94(3): 276–280. (NASS rating: 6.40)
5. Suma, Moka, Singh Narinder, Buttar, Daljeet Singh and Hunjan Mandeep Singh (2023). Management of damping off disease in tomato (Solanum lycopersicum) using potential biocontrol agent Pseudomonas fluorescens. Indian J Agri Sci 92 (9): 1148-1152. (NASS rating: 6.37)
6. Kaur Manjeet, Atri Ashlesha and Singh Daljeet (2023). Non-chemical management of stem rot disease of Egyptian clover (L.). Range Management and Agroforestry 44 (2): 307-314. (NASS rating: 6.58)
7. Singh, Gurjot, Buttar Daljeet Singh, Singh Narinder, Aulakh S. K., Sharma S. P. and Hunjan M.S.(2022). Molecular identification and phylogenetic analysis of different races of Fusarium oxyspoium f.sp. melonis in Muskmelon using RAPD markers under Punjab conditions. Agricultural Research Journal: 59: 453-461. (NAAS rating:5.44)
8. Choudhary, A. K., Singh N and Buttar Daljeet Singh. (2022). Management of foot rot of citrus (Citrus jambhiri spp.) using biocontrol agents. Indian Journal of Agricultural Sciences 92: 1148-1152. (NAAS Rating: 6.37)
9. Suma, Moka, Singh Narinder and Buttar Daljeet Singh. (2021). Identification of potential native chitinase-producing Trichoderma spp. and its efficacy against damping-off in onion. European Journal of Plant Pathology. https://doi.org/10.1007/s10658-021-02321-9. (NAAS Rating:7.58)
10. Choudhary, Ajay Kumar, Singh Narinder and Singh Daljeet. (2021). Evaluation of the bioformulation of potent native strains of Trichoderma spp. against the foot rot/gummosis of Kinnow mandarin. Egyptian Journal of Biological Pest Contro. 31:1-12. (NAAS Rating:6.76)
11. Buttar, Daljeet Singh, Singh N., Salh P. K. and Choudhary A. K. (2020). Impact of endophytic bacteria against yellow rust (Puccinia striiformis f. sp. tritici) of wheat. Indian Journal of Agricultural Sciences 90: 1646-52. (NAAS Rating:6.25)

Awards and Recognitions:

• Received Chaudhary Devi Lal outstanding All India Co-ordinated Research Project (AICRP) award 2006 as a team member
• Received appreciation letter from Prof. Dr Kurt W. Mendgen, University of Konstanz , Germany for excellent work done on Bacillus spp. strains in his lab., at Germany (from 18th. October to 26th. November, 2004 and 1st to 31st. August, 2005) under DST DAAD project entitled “Characterization and development of application technology for Bacillus subitilis and fluorescent Pseudomonas against soil borne plant pathogens”