Influence and damage potential of cercospora leaf spot disease and root-knot nematode, Meloidogyne incognita on plant growth parameters of Vigna radiata

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Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
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Doi: 10.1007/s42535-022-00538-5
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Keywords: n Cercospora canescensn , Cercospora leaf spot disease, Nematode, n Meloidogyne incognitan , Mungbean, n Vigna radiatan


Mungbean, Vigna radiata, is a very important short period legume crop of summer and monsoon season. Among the various diseases associated with mungbean, root-knot nematode Meloidogyne spp. and Cercospora canescens fungus leaf spot are significant limiting factors in effective cultivation of crop. The plants are affected by cercospora or root-knot nematode separately or by both the pathogens. This study revealed a progressive decline in growth parameters of plant viz., length of shoot and root, fresh and dry weight of plant, leaf surface area and chlorophyll content were affected by the Cercospora leaf spot fungus and increasing inoculation levels of plant parasitic root-knot nematode, Meloidogyne incognita, individually and together. There were significant interaction effects in combined infections of root-knot nematode and leaf spot disease. Rate of reproduction of the nematode decreased with increase in inoculation level and also in the presence of Cercospora leaf spot disease.

n              Cercospora canescensn            , Cercospora leaf spot disease, Nematode, n              Meloidogyne incognitan            , Mungbean, n              Vigna radiatan



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The authors are grateful to Dr. Shalini Gaur Rudra of ICAR-IARI, New Delhi for her help in preparation of the manuscript, to the Division of Nematology, ICAR-IARI, New Delhi for the starting culture of M. incognita, and to Division of Genetics, ICAR-IARI, New Delhi for seed of mungbean cv. Pusa Vishal. The authors are also grateful to the Sharda University, Greater Noida for the financial assistance for these investigations.

Author Information

Srivastava Priyadarshini
School of Basic Sciences and Research, Sharda University, Greater Noida, India
Gaur Hari S.
School of Agricultural Sciences, Sharda University, Greater Noida, India