1. Jayakumar, K., 2019. Antioxidant enzyme mechanism of cluster bean (Cyamopsis tetragonaloba (L.) Taub). under cobalt stress. World News Nat. Sci., 24: 64-70.
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2. Jayakumar, K., R. Raja and M. Vinoth, 2018. Documentation of medicinal flora in Pazhavar river bed, Korkai, Mayiladuthurai Taluk, Tamil Nadu, India. World News Nat. Sci., 19: 78-94.
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3. Jayakumar, K., B. Muthuraman and S. Rajasekaran, 2018. Evaluation of phytochemical screening and traditional value of Zizyphus xylopyrus (Retz) Wild. World News Nat. Sci., 16: 97-104.
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4. Jayakumar, K. and M. Vinoth, 2018. Strategies for utilization of wound healing herbals in and around Mayiladuthurai, Nagapptinam district. Int. J. Tradit. Nat. Med., 8: 76-89.
5. Jayakumar, K. and B. Muthuraman, 2018. Traditional uses and nutrient status of Indian native plant fruit (Carissa carandas Linn.). World Scient. News, 96: 217-224.
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6. Chandru, G., K. Jayakumar and M. Girija, 2018. Effect of raw extract of Clitoria ternatea L. on sexual stimulate test of female genital tract in rat. World Scient. News, 91: 86-98.
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7. Jeyaprakash, K., Y.J. Lego, T. Payum, S. Rathinavel and K. Jayakumar, 2017. Diversity of medicinal plants used by adi community in and around area of D’Ering wildlife sanctuary, Arunachal Pradesh, India. World Scient. News, 65: 135-159.
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8. Jayakumar, K., 2017. Pharmacognostical studies and phytocompounds of Aerva lanata (Linn.) Juss. Ex Schult. Int. J. Tradit. Nat. Med., 7: 1-10.
9. Chandru, G., K. Jayakumar and D. Navaneethakannan, 2017. Effect of raw extract of Hybanthus enneaspermus (L.) F. Muell. on the fertility test in female mice (Mus musculus L). World Scient. News, 65: 160-170.
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10. Rajasekaran, S., T.M.S. Kannan, R. Arumugam, K. Jayakumar, J.S.N. Kumari and P. Malarvizhi, 2016. Antifungal activity of silver nanoparticles synthesized by using leaf extract of Callyphyllum inophyllum L. Int. J. Curr. Res. Dev., 4: 17-22.
11. Jayakumar, K., 2016. Screening of bioactive compounds and medicinal properties of Commelina benghalensis L. Int. J. Modern Biochem., 5: 7-15.
12. Jayakumar, K., 2016. Beneficial role of mineral composition and bio-active compounds of Ficus racemosa Linn. Int. J. Mod. Biol. Med., 7: 24-32.
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13. Chandru, G. and K. Jayakumar, 2016. Anti-steroidogenic effect of Thespesia populnea (L.) Sol. ex Correa. in female mice. World Scient. News, 55: 263-273.
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14. Sheela, T., S. Kannan and K. Jayakumar, 2015. Evaluation of bio control efficacy of synbiotic cherry (Prunus avium L.) juice. Int. Lett. Nat. Sci., 42: 62-68.
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15. Sheela, T., B.D. Devi, B. Sabetha, M. Vinoth and K. Jayakumar, 2015. Biocontrol efficacy of synbiotic straw berry (Fragaria ananassa Duch.) juice. Int. J. Food Nutr. Saf., 6: 10-16.
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16. Jayakumar, K., T.M.S. Kannan, P. Thamizhiniyan and P. Vijayarengan, 2015. Evaluation of phytochemicals analysis, medicinal properties and nutritional value of sesame seeds (Sesamum indicum L.). Int. J. Mod. Biol. Med., 6: 129-135.
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17. Jayakumar, K., T.M.S. Kannan and P. Vijayarengan, 2015. Leucas aspera L.-medicinal herb. Int. J. Tradit. Nat. Med., 5: 1-5.
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18. Jayakumar, K., M. Nagarajan and P. Vijayarengan, 2015. Bioactive enzyme activity and medicinal properties of tender coconut (Cocos nucifera L.). Int. J. Mod. Biochem., 4: 10-14.
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19. Jayakumar, K., 2015. Ethno medicinal value of plants in Thanjavur district, Tamil Nadu, India. Int. Lett. Nat. Sci., 2: 33-42.
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20. Kannan, T.M.S., M. Rajesh and K. Jayakumar, 2014. Effect of fungicide sivic on seed germination and seedling growth of Oryza sativa L. Int. J. Mod. Biol. Med., 5: 1-4.
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21. Jayakumar, K., T.S. Kannan, A. Singh, A.M. Bagher and D. Augustine et al., 2014. Impact of sugar mill effluent on photosynthetic pigment content and biochemical constituents variance of cluster bean (Cyamopsis tetragonaloba (L) Taub). Int. J. Environ. Bioenergy, 9: 143-160.
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22. Jayakumar, K. and P. Vijayarengan, 2014. Cobalt induced changes in growth and biochemical constituents in tomato (Lycopersicon esculantum Mill.) plants. Int. J. Plant Anim. Sci., 2: 42-49.
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23. Rajesh, M., K. Jayakumar, T.M.S. Kannan and K.S. Ganesh, 2013. Influence of sugar mill effluent on seed germination and seedling growth of cluster bean (Cyamopsis tetragonaloba). Int. J. Environ. Bioenergy, 7: 54-62.
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24. Rajesh, M., K. Jayakumar and T.M.S. Kannan, 2013. Effect of biofertilizers application on growth and yield parameters of green gram (Vigna radiata). Int. J. Environ. Bioenergy, 7: 43-53.
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25. Rajesh, M. and K. Jayakumar, 2013. Changes in morphological, biochemical and yield parameters of Abelmoschus esculents (L.) Moench due to Panchagavya spray. Int. J. Mod. Plant Anim. Sci., 1: 82-85.
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26. Kannan, T.M.S., M. Rajesh and K. Jayakumar, 2013. Comparative study of certain biochemical parameters in normal and infected leaves of some important plants. Int. J. Mod. Biochem., 2: 50-54.
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27. Kannan, T.M.S., K. Jayakumar and M. Rajesh, 2013. In-vitro studies on Cardiospermum halicacabum L. Int. J. Tradit. Nat. Med., 3: 1-10.
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28. Jayakumar, K., T.M.S. Kannan, M. Rajesh and P. Vijayarengan, 2013. Effect of cobalt chloride on biochemical constituents, mineral status and antioxidant potentials in sesame (Sesamum indicum L.). Int. J. Mod. Plant Anim. Sci., 1: 67-81.
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29. Jayakumar, K., T.M.S. Kannan and M. Nagarajan, 2013. Effect of raw and biologically treated municipal waste water on growth of paddy (Oryza sativa L.). Int. J. Environ. Bioenergy, 7: 1-9.
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30. Jayakumar, K., M. Rajesh, T.S. Kannan, S. Rajasekaran and P. Vijayarengan, 2013. Traditional knowledge and utility of medicinal plants in Cauvery Delta region Aduthurai-Thanjore district-Tamil Nadu-India. Int. J. Mod. Biol. Med., 3: 135-143.
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31. Jayakumar, K., M. Rajesh, L. Baskaran and P. Vijayarengan, 2013. Changes in nutritional metabolism of tomato (Lycopersicon esculantum Mill.) plants exposed to increasing concentration of cobalt chloride. Int. J. Food Nutr. Saf., 4: 62-69.
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32. Jayakumar, K., M. Rajesh, K.S. Ganesh and P. Vijayarengan, 2013. Cobalt alters the nodulation, leg-haemoglobin content and antioxidant potential of horse gram (Dolichos biflorus). Int. J. Mod. Biochem., 2: 15-23.
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33. Jayakumar, K., 2013. Traditional medicinal values of Adhatoda vasica. Int. J. Tradit. Nat. Med., 3: 26-31.
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34. Jayakumar, K., 2013. Influence of pharmaceutical effluents on seedling vigour, dry matter production of horse gram (Dolichos biflorus L.). Int. J. Mod. Plant Anim. Sci., 1: 58-66.
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35. Jayakumar, K., 2013. Assessment and day to day utilization of medicinal plants in Mayiladuthurai-Nagapattinam district of Tamil Nadu, India. Int. J. Mod. Biol. Med., 4: 54-63.
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36. Rajasekaran, S., K.S. Ganesh, K. Jayakumar, M. Rajesh, C. Bhaaskaran and P. Sundaramoorthy, 2012. Biofertilizers-current status of Indian agriculture. Int. J. Environ. Bioenergy, 4: 176-195.
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37. Jayakumar1, K., M.M. Azooz, P.. Vijayarengan and C.A. Jaleel, 2010. Mineral nutrient variations in soybean (Glycine max) after treatment with exogenous cobalt. Recent Res. Sci. Tech., 2: 1-7.
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38. Jayakumar, K., M.M. Azooz, P. Vijayarengan and S. Ananth, 2010. Alterations in sugar metabolism of Glycine max with cobalt applications. J. Ecobiotechnol., 2: 1-5.
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39. Vijayarengan, P., C.A. Jaleel, Z. Chang-Xing, K. Jayakumar and M.M. Azooz, 2009. Biochemical variations in ground nut under cobalt applications. Global J. Mol. Sci., 4: 19-22.
40. Jayakumar, K., C.A. Jaleel, M.M. Azooz, P. Vijayarengan, M. Gomathinayagam and R. Panneerselvam, 2009. Effect of different concentrations of cobalt on morphological parameters and yield components of soybean. Global J. Mol. Sci., 4: 10-14.
41. Jayakumar, K., C.A. Jaleel and P. Vijayarengan, 2009. Effect of different concentrations of cobalt on pigment contents of soybean. Bot. Res. Int., 2: 153-156.
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42. Jayakumar, K. and C.A. Jaleel, 2009. Uptake and accumulation of cobalt in plants: A study based on exogenous cobalt in soybean. Bot. Res. Int., 2: 310-314.
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43. Jaleel, C.A., K. Jayakumar, Z. Chang-Xing and M. Iqbal, 2009. Low concentration of cobalt increases growth, biochemical constituents, mineral status and yield in Zea Mays. J. Sci. Res., 1: 128-137.
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44. Jaleel, C., K. Jayakumar, Z. Chang-Xing and M.M. Azooz, 2009. Antioxidant potentials protect Vigna radiata (L.) wilczek plants from soil cobalt stress and improve growth and pigment composition. Plant Omics J., 2: 120-126.
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45. Jayakumar, K., P. Vijayarengan, Z. Changxing, M. Gomathinayagam and C.A. Jaleel, 2008. Soil applied cobalt alters the nodulation, leg-haemoglobin content and antioxidant status of Glycine max (L.) Merr. Colloids Surf. B: Biointerfaces, 67: 272-275.
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46. Jayakumar, K., C.A. Jaleel, M.M. Azooz, 2008. Mineral constituent variations under cobalt treatment in Vigna mungo (L.) Hepper. Global J. Mol. Sci., 3: 32-34.
47. Jayakumar, K., C.A. Jaleel, M.M. Azooz, 2008.. Impact of cobalt on germination and seedling growth of Eleusine coracana L. and Oryza sativa L. under hydroponic culture. Global J. Mol. Sci., 3: 18-20.
48. Jayakumar, K., C.A. Jaleel and M.M. Azooz, 2008. Photochemical changes in green gram (Vigna radiate) under cobalt stress. Global J. Mol. Sci., 3: 46-49.
49. Jaleel, C., K. Jayakumar, Z. Chang-Xing and M.M. Azooz, 2008. 2008. Effect of soil applied cobalt on activities of antioxidant enzymes in Arachis hypogaea. Global J. Mol. Sci., 3: 42-45.
50. Vijayaragavan, M., P. Vijayarengan, K. Jayakumar and A. Natarajan, 2007. Phytotoxicity of cadmium and its effects on growth and photosynthetic responses in Raphanus sativus (L.). Plant Arch., 7: 555-558.
51. Vijayaragavan, M., P. Vijayarengan and K. Jayakumar, 2007. Cadmium mediated toxic effect on biochemical constituents in Raphanus sativus (L.). Adv. Plant Sci., 20: 535-536.
52. Jayakumar, K., P. Vijayarengan, A.K. Kumar and C.A. Jaleel, 2007. Cobalt induced changes in the antioxidant enzyme activities in maize (Zea mays L.). Chem. Environ. Res., 16: 117-117.
53. Jayakumar, K., C.A. Jaleel and P. Vijayarengan, 2007. Changes in growth, biochemical constituents and antioxidant potentials in radish (Raphanus sativus L.) under cobalt stress. Turk. J. Biol., 31: 127-136.
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54. Jayakumar, K., P. Vijayarengan, M. Vijayaragavan, S. Rajasekaran, K. Sumathi and P. Sundaramoorthy, 2006. Toxicological aspects of cobalt induced growth and morphological changes in Helianthus annuus L. Plant Arch., 6: 829-830.
55. Jayakumar, K. and P. Vijayarengan, 2006. Influence of cobalt on seed germination and seedling growth of Vigna mungo (L.) Hepper. Plant Arch., 6: 681-682.
56. Jayakumar, K. and P. Vijayarengan, 2006. Alterations in the carbohydrate metabolism of Vigna mungo (L.) Hepper as affected by cobalt stress. Indian J. Environ. Ecoplan., 12: 693-696.