International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 12, Issue:4, April, 2023

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2023.12(4): 63-70

Survey for Root-Knot Nematode Infestation in Bean (Phaseolus vulgaris L.) Fields in Mysore District of Karnataka, India
V. Basavaraj1*, M. S. Sharada1, H. M. Mahesh2 and M. R. Sampathkumar1
1Department of Studies in Botany, Manasagangotri, University of Mysore, Mysuru,Karnataka – 570006, India
2Bharathi College Postgraduate and Research Centre, Bharathinagara, Mandya,Karnataka – 571422, India
*Corresponding author

Phaseolus vulgaris L. belongs to the family Fabaceae, and also known as Common bean or French bean. There are numerous plant parasitic nematodes have been reported to be associated with French bean in India among them, Meloidogyne incognita and Meloidogyne javanica are the most prevalent nematodes which makes the way for the secondary infection and disease complex with different pathogens like fungal and bacterial pathogens in the soil. A random survey was conducted for incidence of root-knot nematode in beans during September to December 2022 in Mysuru district of Karnataka state. Survey conducted in seven taluks comprising of twenty-three villages, the major symptoms recorded during survey are presence of root galls, yellowing, marginal and tip drying of leaves and galling and rotting of roots. The results revealed that, the mean root-knot index and mean egg mass index of French bean crops of Mysuru district ranged 3.69 and 3.56 respectively on a 0-5 disease rating scale. The overall mean soil nematode population per 200cc soil sample and mean root nematode population per 5g root sample of French bean crop ranged 722.60/200cc soil and 86.13/5g root respectively which is more than that of Economic thresh-hold level. If proper strategies are not adopted for their management, the French bean crops will result in higher economic loss. In order to mitigate the negative impact of nematodes in French bean production, there is the need for identity and promote the use of resistant cultivars along with these some integrated nematode management strategies has to be adopted.

Keywords: French bean, Root-Knot Nematode, Meloidogyne, Nematode population

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How to cite this article:

Basavaraj, V., M. S. Sharada, H. M. Mahesh and Sampathkumar, M. R. 2023. Survey for Root-Knot Nematode Infestation in Bean (Phaseolus vulgaris L.) Fields in Mysore District of KarnatakaInt.J.Curr.Microbiol.App.Sci. 12(4): 63-70. doi:
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