International Journal For Multidisciplinary Research

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Survey and Assessment of Occurrence and Infestation Level of Plant -Parasitic Nematodes in Banana Orchards of Vaishali District, Bihar

Author(s) Dr. Shashi kant Thakur, Ms. Sheetal Jha, Dr. Priyeta Priyadarshani
Country India
Abstract Banana (Musa spp.) is a vital fruit crop of Bihar, especially in the Vaishali district, where it plays a crucial role in the rural economy and supports the livelihood of thousands of farmers. Despite its economic significance, banana cultivation is often hampered by several soil-borne pests, among which plant-parasitic nematodes are one of the most overlooked yet highly damaging factors. In particular, Meloidogyne incognita (root knot nematode) is known to cause severe root damage, nutrient imbalance, plant stunting and significant yield loss. A systematic survey was conducted in seven major banana-growing blocks of Vaishali: Bidupur, Hajipur, Vaishali Goraul, Bhagwanpur, Raghopur and Mahnar. Soil and root samples collected from banana fields were processed and analysed for nematode diversity and population density. The study identified five major plant-parasitic nematode genera: Meloidogyne incognita, Rotylenchulus spp., Hoplolaimus spp., Helicotylenchus spp. and Xiphinema spp. Among them, Meloidogyne incognita was found to be the most prevalent and aggressive species across all surveyed sites, with severe root galling and plant health decline observed in infested fields. Population as low as 1,000 J₂ per plant was sufficient to cause significant reductions in plant height, pseudo stem girth, number of leaves, root length, root weight, corm weight and an increase in root gall index and egg masses, establishing the threshold level of infestation. In conclusion, the study confirms that Meloidogyne incognita is the most damaging nematode species in banana-growing regions of Vaishali, Bihar.
Keywords Banana, Plant Parasitic Nematodes, Threshold ,Survey, Analysis
Field Biology > Agriculture / Botany
Published In Volume 8, Issue 3, May-June 2026
Published On 2026-06-01
DOI https://doi.org/10.36948/ijfmr.2026.v08i03.80081
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E-ISSN 2582-2160
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