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Faculty Member Details

Staff Id : 12358
Name : Dr. R. UDHAYAKUMAR (Deputed)
Designation : ASSISTANT PROFESSOR
Department : PLANT PATHOLOGY
Qualification : M.Sc(Agri).,Ph.D.,
Specialization : IDM and Postharvest Pathology
Date of Birth : 22-09-1981
Date of Joining : 06-07-2006

Present Address Contact Number E-Mail Address
Faculty of Agriculture,
Annamalai University,
Annamalai Nagar - 608 002.		9488606858udhayaplantpathology@yahoo.co.in

Research Guidance
Discipline Awarded Guidance
M.Phil./M.E./M.Sc. 41
Ph.D. 01


Conference /Seminar / Symposia / Workshop
Conference Seminar Symposia Workshop
National International
Attended 351135
Conducted ----1


Research Projects
Major Projects Minor Projects Total Amount (Rs.)
Completed 513300000
Ongoing ---

Teaching and Research Experience Industry Experience
18 Years -

Journals Conference Books Published Popular Article
National International National International
15 56 - - - -

List of Publications - National
Udhayakumar, R., Rajamohan, K., Sudha Raja Kumar, R., Sanjay Gandhi, S., Vengadeshkumar, L. and Thamaraiselvi, M. , "Variation in host pathogen interaction and phenotypic characteristic of Colletotrichum gloeosporioides isolates.", Life science bulletin, Volume 16, Number 1, Jun 2019, pp. 75-78. 2019.
Udhayakumar, R. , "Influence of different temperature and relative humidity levels on the mycelial growth, conidial germination and anthracnose incidence of Colletotrichum gloeosporioides.", Innovations in Agriculture, Volume 1, Number 2, May 2018, pp. 31-33. 2018.
Muthukumar, A. and Udhayakumar, R. , "Effect of virulence, methods of inoculation and morphological characteristics of Lasiodiplodia theobromae (pat.) Griffon Naubl. Causing peduncle blight of tuberose.", Journal of Mycology and Plant Pathology, Volume 47, Number 3, Sep 2017, pp. 336-345. 2017.
Udhayakumar, R. and Usharani, S., "In vitro efficacy of bacterial antagonists on the incidence of mango anthracnose and development of its pathogen.", Agricultural Science Digest., , Volume 30, Number 4, Jul 2010, pp. 293-295. 2010.
John Christopher, D., Suthin raj, T., Shanmugapackium, S., Udhayakumar, R. and Usharani, S. , "Eco friendly management of Fusarial wilt disease in tomato..", Annals of Plant Protection Sciences, Volume 18, Number 2, Sep 2010, pp. 447-450. 2010.
Usharani, S., Udhayakumar, R. and John Christopher, D., "Bioefficacy of plant extracts and bioagents against Macrophomina phaseolina.", Annals of Plant Protection Sciences, Volume 17, Number 1, Sep 2009, pp. 389-393. 2009.
Usharani, S., John Christopher, D., Udhayakumar, R., Sanjaygandhi, S. and Pratheema, K. , "Introduction of defense responses in blackgram by Trichoderma viride.", Journal of Biological Control, Volume 23, Number 3, Sep 2009, pp. 301-304. 2009.
Usharani, S., Udhayakumar, R. and John Christopher, D. , "Efficacy of bioagents and organic amendments against Macrophomina phaseolina (Tassi) causing root rot of sesame..", Journal of Oilseeds Research, Volume 26, Number 2, 2009, pp. 173-174. 2009.
Usharani, S., John Christopher, D., Udhayakumar, R., Sanjaigandhi, S., and Pratheema, K. , "Induction of defense responses in blackgram by Trichoderma viride.", Journal of Biological Control, Volume 23, Number 3, 2009, pp. 301-304. 2009.
Usharani, S., Udhayakumar, R. and John Christopher, D. , "Effect of organic substrates and on organic nutrients on the rhizosphere competence of Trichoderma viride..", Annals of Plant Protection Sciences, Volume 16, Number 2, Sep 2008, pp. 485-547. 2008.
John Christopher, D., Usharani, S. and Udhyakumar, R. , "Management of dry root rot (Macrophomina phaseolina (Tassi) Goid) of urdbean (Vigna mungo (L.) Hepper) by the integration of antagonistic (Trichoderma viride) and organic amendments.", Mysore Journal of Agricultural Science, Volume 42, Number 2, 2008, pp. 241-246. 2008.
Usharani, S., Udhayakumar, R. and Pratheema, K. , "Effect of bioagents against Colletotrichum capsici on seed quality of chilli..", Plant Disease Research, Volume 23, Number 1, Jun 2008, pp. 16-19. 2008.
Usharani, S., Udhayakumar, R. and Pratheema, K. , "Pathogenic, variability of Fusarium oxysporum f. sp. lycopersici..", Plant Disease Research, Volume 23, Number 2, Nov 2008, pp. 86-87. 2008.
John Christopher, D., Suthinraj, T. and Udhyakumar, R. , "Induction of defence related enzymes in Trichoderma viride treated blackgram.", Indian Journal of Plant Protection, Volume 35, Number 2, Dec 2007, pp. 299-303. 2007.
John Christopher, D., Suthinraj, T. and Udhayakumar, R. , "Biological control of dry root rot (Macrophomina phaseolina (Tassi) Goid) of urdbean (Vignamungo(L.) Hepper) by the integration of antagonistic (Trichoderma viride) and organic amendments..", Journal of Plant Disease Sciences, Volume 2, Number 2, Jul 2007, pp. 153-156. 2007.
List of Publications - International
Vignesh, K., Rajamohan, K., Balabaskar, P., Anandan, R. and Udhayakumar, R, "Survey on the incidence of fusarium wilt of tomato incited by Fusarium oxysporum f.sp. lycopersici (FOL) in major tomato growing areas of Krishnagiri district.", Plant Archives, Volume 21, Number 1, Apr 2021, pp. 2369-2376. 2021.
Vignesh K., Rajamohan, K., Anandan R. and Udhayakumar, R. , "Morphological and molecular variation of Fusarium oxysporum f.sp lycopersici isolates causing fusarium wilt in tomato.", Plant Archives, Volume 21, Number 1, Apr 2021, pp. 2363-2368. 2021.
Mahalakshmi G., Vengadeshkumar L., Sanjaygandhi S., Rajamohan K., Udhayakumar R. and Mary Sharmila A. , "Management of tomato early blight disease using mangorve leaf extract..", Plant Archives, Volume 20, Number 1, Apr 2020, pp. 3130-3134. 2020.
Thirunarayanan P., Sanjaygandhi S., Vengadeshkumar L., Rajamohan K. and Udhayakumar R., "Survey, cultural characters and pathogenicity of Macrophomina phaseolina causing sesame root rot disease. .", Plant Archives, Volume 20, Number 1, Apr 2020, pp. 3007-3010. 2020.
Thirunarayanan P., Sanjaygandhi S., Rajamohan K., Udhayakumar R. and Vengadeshkumar L. , "Isolation, cultural characterization and antagonistic activity of Trichoderma viride against Macrophomina phaseolina..", Plant Archives, Volume 20, Number 1, Apr 2020, pp. 2951-2955. 2020.
Mahalakshmi G., Vengadeshkumar L., Sanjaygandhi S., Rajamohan K., Udhayakumar R. and Mary Sharmila A, "Antifungal activity of Rhizophora apiculata against Alternaria solani..", Plant Archives, Volume 20, Number 1, Apr 2020, pp. 2931-2936. 2020.
Sutha Raja Kumar R., Magesh M., Darwin Christdhas Henry L., Jaiganesh V. and Udhaya Kumar R. , "Efficacy of native isolates of Pseudomonas fluorescens and plant extracts for the management of early blight in tomato.", Plant Archives, Volume 20, Number 2, Oct 2020, pp. 4947-4953. 2020.
Udhayakumar, R., Rajamohan, K., Sanjaygandhi, S. and Vengadeshkumar, L. , "Effect of pre harvest application of bioformulations on the anthracnose disease incidence and biometrics of mango..", Journal of Biopesticides, Volume 12, Number 1, 2019, pp. 61-71. 2019.
Rajamohan, K., Udhayakumar, R., Sanjaygandhi, S., Vengadesh Kumar, L., ThamaraiSelvi, M., Sudhasha S. and Yuvarani R., "Efficacy of VAM fungi and antagonistic bacteria against onion basal rot incited by Fusarium oxysporum f.sp. cepae..", Journal of Pharmacognosy and Phytochemistry, Volume 8, Number sp2, Feb 2019, pp. 413-418. 2019.
Udhayakumar, R., Muthukumar, A. and Usharani, S. , "Effect of bacterial antagonists on the in vitro production of cellulolytic and pectinolytic enzymes by Colletotrichum gloeosporioides.", Plant Archives , Volume 19, Number 1, Apr 2019, pp. 923-926. 2019.
Rajamohan, K., Udhaya Kumar, R., Sanjay Gandhi, S., Vengadesh Kumar, L., Thamarai Selvi, M., Sudhasha S. and Yuvarani R. , "In vitro efficacy of fungal and bacterial antagonists against Fusarium oxysporum f. sp. cepae causing basal rot of onion.", Plant Archives , Volume 19, Number 1, Apr 2019, pp. 813-817. 2019.
Rajamohan, K., Thamaraiselvi, M., Sanjaygandhi, S., Udhayakumar R. and Vengadeshkumar, L. , "Efficacy of bioinoculants on dry root rot incidence of blackgram under in vitro conditions.", Journal of Emerging Technologies and Innovative Research, Volume 6, Number 6, Jun 2019, pp. 174-184. 2019.
Rajamohan, K., Thamaraiselvi, M., Sanjaygandhi, S., Udhayakumar R. and Vengadeshkumar, L. , "Seed and soil application with antagonist on plant growth promotion and dry root rot incidence of blackgram under in vitro condition.", Journal of Emerging Technologies and Innovative Research, Volume 6, Number 6, Jun 2019, pp. 218-228. 2019.
Rajamohan, K., Thamaraiselvi, M., Sanjaygandhi, S., Udhayakumar R. and Vengadeshkumar, L. , "Effect of AM fungi on dry root rot disease incidence and biometrics of groundnut. .", International Journal of Research and Analytical Reviews, Volume 6, Number 2, Jun 2019, pp. 565-576. 2019.
Rajamohan, K., Thamaraiselvi, M., Sanjaygandhi, S., Udhayakumar R. and Vengadeshkumar, L. , "Efficacy of Glomus mosseae on plant growth promotion and dry root rot incidence of groundnut.", International Journal of Research and Analytical Reviews, Volume 6, Number 2, Jun 2019, pp. 669-676. 2019.
Muthukumar, A., Kanagarajan, R. and Udhayakumar, R. , "Evaluation of fungicide against sheath blight (Rhizoctonia solani) of Rice.", Journal of Pharmacognosy and Phytochemistry, Volume 8, Number 3, May 2019, pp. 494-497. 2019.
Udhayakumar, R., Muthukumar, A. and Kanagarajan, R. , "Evaluation of filia 52.5 SE (Tricyclazole 34.2% + Propiconazole 10.7%) against rice blast disease. Journal of Pharmacognosy and Phytochemistry.", Journal of Pharmacognosy and Phytochemistry, Volume 8, Number 3, May 2019, pp. 396-399. 2019.
Udhayakumar, R., Rajamohan, K., Sutha Raja Kumar, R., Sanjay Gandhi, S. and Vengadeshkumar, L. , "Evaluation of Filia 52.5 SE (Tricyclazole 34.2% + Propiconazole 10.7%) against rice sheath blight.", Journal of Pharmacognosy and Phytochemistry, Volume 8, Number sp2, Feb 2019, pp. 371-374. 2019.
Muthukumar, A., Suthin Raj, T., Udhayakumar, R. and Naveenkumar, R. , "Evaluation of antagonistic microbes against peduncle blight caused by Lasiodiplodia theobromae (PAT.) Griffon & Maubl in tuberose.", Journal of Biopesticides, Volume 12, Number 1, 2019, pp. 83-94. 2019.
Vengadeshkumar, L., Meera, T., Sanjaygandhi, S. Udhayakumar, R., Rajamohan K. and Sudhasha, S. , "Endophytic movemnet and phylloplane survival of P. fluorescens in rice.", Journal of Pharmacognosy and Phytochemistry, Volume 8, Number 3, 2019, pp. 518-520. 2019.
Udhayakumar, R., Rajamohan, K., Sudha Raja Kumar, R., Sanjay Gandhi, S., Vengadeshkumar, L. and Thamaraiselvi, M. , "Effect of preharvest application of bioformulations on the induction of defense enzymes and phenols in mango leaves.", Advances in Plant Sciences, Volume 32, Number 1, Jun 2019, pp. 1-6. 2019.
Udhayakumar, R., Muthukumar, A., Kanagarajan, R. and Sudha Raja Kumar, R. , "Field evaluation of new fungicide molecule (Amistar Top 325 SC) against Sugarcane rust incited by Puccinia melanocephala.", Advances in Plant Sciences, Volume 32, Number 1, Jun 2019, pp. 19-23. 2019.
Vengadeshkumar, L., Meera, T., Balabasker, P., Sanjaygandhi, S., Rajamohan K., Udhayakumar, R. and Sudhasha, S. , "Antibacterial activity of Rhizophora apiculata leaf extract for the management of rice bacterial blight disease.", Plant Pathology Journal, Volume 18, Number 1, 2019, pp. 39-46. 2019.
Muthukumar, A., Suthinraj, T. and Udhayakumar, R. , "Studies on the Eco- friendly management of papaya anthracnose caused by Colletotrichum papayi (Penz.) Penz &Sacc. And Lasiodiplodia theobromae (Pat.) Griffon & Maubl..", International Archive of Applied Sciences and Technology,, Volume 10, Number 4, Dec 2019, pp. 132-142. 2019.
Vengadeshkumar, L., Kalaiselvi, M., Meera, T., Sanjaygandi, S., Udhayakumar, R., Rajamohan, K. and Sudhasha, S. , "Effect of neem compared with Pseudomonas fluorescens on the management of cowpea root rot disease.", Journal of Biopesticides, Volume 12, Number 2, Dec 2019, pp. 232-238. 2019.
Rajamohan, K., Udhayakumar, R., Sanjaygandhi, S., Vengadesh Kumar, L., Thamarai Selvi, M., Sudhasha, S. and Yuvarani, R. , "Management of basal rot of onion caused by Fusarium oxysporum f. sp. cepae using bio-regulators.", Journal of Biopesticides, Volume 12, Number 2, Dec 2019, pp. 239-247. 2019.
Hemanandhini, K., Muthukumar, A., Karmel Reetha, A., Udhayakumar R. and Logeshwari, R., "Effect of different media on growth and cultural characteristics of Alternaria jasmini causing jasmine leaf blight.", Plant Archives, Volume 19, Number 2, Oct 2019, pp. 2220-2224. 2019.
Hemanandhini, K., Muthukumar, A., Karmel Reetha, A., Udhayakumar R. and Logeshwari, R. , "In vitro efficacy of culture filtrate of Pseudomonas fluorescens on the growth of Alternaria jasmine.", Plant Archives, Volume 19, Number 2, Oct 2019, pp. 2419-2424. 2019.
Udhayakumar, R., Muthukumar, A. and Usharani, S. , "In vitro evaluation of bacterial antagonists against mango anthracnose pathogen Colletotrichum gloeosporioides.", Multilogic in Science, Volume 8, Number 28, Jan 2019, pp. 226-228. 2019.
Udhayakumar, R., Rajamohan, K., Sanjaygandhi. S. and Vengadeshkumar, L. , "Effect of foliar application with bioformulations on mango anthracnose incidence under pot culture condition.", Plant Archives, Volume 19, Number Spl 1, Jan 2019, pp. 757-761. 2019.
Udhayakumar, R., Muthukumar, A. and Usharani, S., "Pathogenicity variation, morphological and cultural characteristic of Colletotrichum gloeosporioides isolates.", Plant Archives, Volume 19, Number 1, Apr 2019, pp. 425-430. 2019.
Udhayakumar, R., Muthukumar, A. and Sutha Raja Kumar, R. , "Efficacy of bacterial antagonist against Colletotrichum gloeosporioides under in vitro condition. .", International Journal of Research and Analytical Reviews, Volume 6, Number 2, May 2019, pp. 437-441. 2019.
Udhayakumar, R. and Muthukumar, A. , "Induction of defense enzymes and phenols in mango fruits by post-harvest application of bioformulations.", International Journal of Research and Analytical Reviews, Volume 6, Number 2, May 2019, pp. 734-744. 2019.
Muthukumar, A., Suthinraj, T., Udhayakumar, R. and Naveenkumar R. , "Effect of light and aeration on the growth of Sclerotium rolfsii causing stem rot of cluster bean.", Plant Archives, Volume 19, Number supp.1, Jan 2019, pp. 1294-1296. 2019.
Muthukumar, A. Udhayakumar, R. and Naveenkumar. R. , "Effect of nutritional sources on the growth of Sclerotium rolfsii causing stem rot of cluster bean..", Plant Archives, Volume 19, Number supp.1, Jan 2019, pp. 1297-1300. 2019.
Sanjaygandhi, S., Udhayakumar, R., Vengadeshkumar, L., Rajamohan, K. and Thamarai Selvi, M. , "Effect of combined application of antagonistic organisms and organic amendments on the wilt incidence of cotton incited by Fusarium oxysporum f. sp. vasinfectum..", Plant Archives, Volume 19, Number supp.1, Jan 2019, pp. 1324-1329. 2019.
Udhayakumar, R., Muthukumar, A. and Kanagarajan. R. , "Field Evaluation of New Fungicide Molecule (Amistar Top 325 SC) Against Sugarcane Smut Incited by Sporisorium scitamineum..", International Archive of Applied Sciences and Technology, Volume 10, Number 2, Jun 2019, pp. 13-17. 2019.
Muthukumar, A., Udhayakumar, R. and Suthinraj, T. , "Impact of Environmental Conditions on The Growth and Sporulation of Sclerotium rolfsii Sacc. Inciting Stem Rot of Clusterbean.", International Archive of Applied Sciences and Technology, Volume 10, Number 2, Jun 2019, pp. 18-24. 2019.
Muthukumar, A. Kanagarajan, R. and Udhayakumar, R. , "Bio-efficacy and phytotoxicity evaluation of Carbendazim 50% WP as dry seed treatment against sheath blight of Rice.", International Archive of Applied Sciences and Technology, Volume 10, Number 2, Jun 2019, pp. 90-94. 2019.
Thamarai Selvi, M., Chandrika, R., Rajamohan, K., Udhayakumar, R., Sanjaygandhi, S. and Vengadesh Kumar, L. , "Efficiency of seaweed extracts for the control of sheath blight of rice caused by Rhizoctonia solani [Kuhn]. .", Journal of Emerging Technologies and Innovative Research, Volume 6, Number 2, Feb 2019, pp. 247-251. 2019.
Muthukumar, A., Sivakumar, T., Naveenkumar, R., Sanjeevkumar, K. and Udhayakumar, R. , "Bio efficacy and phytotoxicity evaluation of TWG1 70wg (Thiophanate methyl) against anthracnose disease in grapes.", Journal of Emerging Technologies and Innovative Research, Volume 6, Number 1, Jan 2019, pp. 516-524. 2019.
Sanjaygandhi, S., Udhayakumar, R., Vengadeshkumar, L., Rajamohan, K. and ThamaraiSelvi, M. , "Survey of wilt incidence of cotton and pathogenic variability of Fusarium oxysporum f. sp. vasinfectum.", Plant Archives, Volume 19, Number supp.1, Jan 2019, pp. 1317-1323. 2019.
Udhayakumar, R., Usharani, S. and Muthukumar, A. , "Influence of chitin on population dynamics and chitinase activity of antagonistic bacteria. .", Journal of Emerging Technologies and Innovative Research, Volume 5, Number 9, Sep 2018, pp. 313-316. 2018.
Muthukumar, A. and Udhayakumar, R. , "Evaluation of new molecule of fungicides against early blight (Alternaria solani) Ellis & Martin Jones and Grout.) Of tomato..", International Journal of Chemical Studies, Volume 5, Number 5, 2017, pp. 597-600. 2017.
Thirunarayanan, P., Sanjaygandhi, S. and Udhayakumar, R. , "Occurrence, virulence, and cultural characteristics of Macrophomina phaseolina causing root rot of sesame from Cuddalore district of Tamilnadu. .", Trends in Biosciences, Volume 10, Number 45, Dec 2017, pp. 9264-9269. 2017.
Muthukumar, A. and Udhayakumar,R. , "Evaluation of bioefficacy and phytotoxicity studies of Ridomil Gold 68% WP (Metalaxyl-m 4%+ Mancozeb-64%) against chilli anthracnose.", The Bioscan, Volume 11, Number 4, 2016, pp. 2817-2820. 2016.
Muthukumar, A., Udhayakumar, R. and Naveen Kumar, R. , "Field evaluation of new fungicide molecule (Ridomil gold 6 8% WP) against leaf spot of chilli.", The Bioscan, Volume 11, Number 4, 2016, pp. 2883-2886. 2016.
Muthukumar, A. and Udhayakumar, R., "Bioefficacy studies of new fungicide molecules (Ridomil gold 68%WP) against leaf spot and fruit spot/rot of pomegranate. .", The Bioscan, Volume 10, Number 4, 2015, pp. 1859-1862. 2015.
Udhayakumar, R. and Usharani, S., "Effect of pH levels, carbon and nitrogen sources on the mycelial growth and bio- mass production of Colletotrichum gloeosporioides (Penz.) Penz. and Sacc..", International Journal of Plant Protection, Volume 3, Number 1, Apr 2010, pp. 1-4. 2010.
John Christopher, D., Suthin raj, T., Usharani, S. and Udhyakumar,R. , "Roll of defence enzyme activity in tomato as induced by Trichodema virens against Fusarim oxysporum f.sp. lycopersici..", Journal of Biopesticides, Volume 3, Number 1, 2010, pp. 158-162. 2010.
Sangeetha, G. Thangavelu, R. Usharani, S. Muthukumar, A. and Udayakumar, R., "Induction of systemic resistance by mixtures of antagonist bacteria for the management of crown rot complex on banana..", Acta Physiologiae Plantarum, Volume 32, Number 6, May 2010, pp. 1177-1187. 210.
Udhayakumar, R. and Usharani, S., "Effect of certain factors favouring the mycelial growth and conidial germination of Colletotrichum gloeosporioides (Penz.) Penz. and Sacc. .", International Journal of Plant Protection, Volume 3, Number 1, Apr 2010, pp. 20-22. 2010.
Sudhasha, S., Usharani, S. and Udhayakumar, R. , "Biological control of onion basal rot caused by Fusarium oxysporum f.sp. cepae..", Advances in Plant Sciences, Volume 22, Number 2, 2009, pp. 411-413. 2009.
Suthin raj, T., John Christopher, D., Usharani, S. and Udhyakumar, R. , "Effect of plant products on the incidence and yield parameters of chilli fruit rot..", Advances in Plant Sciences, Volume 22, Number 1, Jun 2009, pp. 31-32. 2009.
John Christopher, D., Usharani, S. and Udhyakumar, R. , "Management of dry root rot (Macrophomina phaseolina (Tassi) Goid) of peanut (Arachis hypogea L.) by the integration of antagonistic (Trichoderma viride) and organic amendments.", Advances in Plant Sciences, Volume 21, Number 2, Dec 2008, pp. 389-392. 2008.
Udhaya Kumar, R., Usharani, S. and John Christopher, D. , "Effect cold water extracts of plant products on the Macrophomina phaseolina (Tassi.) Goid. the causative agent of dry root rot of Ground nut. .", Advances in Plant Sciences., Volume 21, Number 2, Dec 2008, pp. 415-417. 2008.

List of Awards /Honours / Memberships
INDIAN PHYTOPATHOLOGICAL SOCIETY - IPS/LM/2019/2009