Repellent and Nematostatic Behaviour of Botanical Extracts Against Root-Knot Nematode Meloidogyne incognita Attacking Solanum melongena L.
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Department of Botany, Lords University, Alwar, Rajasthan, India
Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
Section of Plant Pathology and Nematology, Department of Botany Aligarh Muslim University, Aligarh, India
Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
Submission date: 2020-08-15
Final revision date: 2021-04-14
Acceptance date: 2021-05-24
Online publication date: 2021-10-19
Publication date: 2021-12-23
Corresponding author
Moh Tariq   

Department of Botany, Lords University, Alwar, Alwar Bhiwadi Highway, 301028, Alwar, India
Pol. J. Environ. Stud. 2022;31(1):307-314
The current experiment was performed to determine the nematicidal behaviour of aqueous extract of various weed plants viz., Parthenium hysterophorus, Cymbopogon citratus, Eichhornia crassipes, Monstera deliciosa and Tinospora cardifolia against hatching, mortality and penetration rate of Meloidogyne incognita under in vitro condition. The eggs and second stage juveniles were exposed to various concentrations (250, 500, 1000, 1500, 2000 and 2500 μg/ml) for 5 days and 12, 24 and 48 h respectively. During the experiment, all plant extracts displayed nematicidal potential. Comparison of LC50 values of different plant extracts showed that P. hysterophorus was found to be most effective with LC50 664.9 μg/ml, while T. cardifolia was less effective at 48h of LC50 1419.0 μg/ml. Aqueous extracts of P. hysterophorus at 2500 μg/ml was highly effective against hatching and mortality after 5 days and 72h exposure period respectively. Whereas T. cardifolia was found least effective. The macerated leaves of P. hysterophorus applied at 0.3 g/kg sand showed the lowest penetration of M. incognita in brinjal roots while T. cardifolia displayed highest after 3 and 5 days’ post inoculation. This study suggests that aqueous extract of the selected plants having nematistatic and nematicidal properties that can be used for the management of M. incognita in an eco-friendly manner and sustainable agriculture.
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