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Evaluation of the nematicidal potential of mulberry (Morus alba) extracts against root-knot nematode (Meloidogyne incognita) in tomato (Solanum lycopersicum)  


Citation :- Evaluation of the nematicidal potential of mulberry (Morus alba) extracts against root-knot nematode (Meloidogyne incognita) in tomato (Solanum lycopersicum). Res. Crop. 27: 135-141
MANDLENKOSI P. SIGOGO AND NICHOLUS M. MNYAMBO nicholus.mnyambo@ump.ac.za
Address : Faculty of Agriculture and Natural Sciences, University of Mpumalanga, Private Bag X11283, Mbombela 1200, South Africa
Submitted Date : 10-11-2025
Accepted Date : 8-02-2026

Abstract

Root-knot nematodes (Meloidogyne incognita (Kofold & White) Chitwood) are among the most damaging pests affecting tomato (Solanum lycopersicum L.) production globally, leading to significant yield losses. Conventional control using synthetic nematicides is increasingly constrained due to environmental, health, and regulatory concerns, highlighting the need for safe and sustainable alternatives. This study evaluated the nematicidal potential of Morus alba L. (mulberry) leaf extracts and their effects on tomato growth parameters under controlled experimental conditions. Phytochemical screening revealed the presence of flavonoids, saponins, phenols, glycosides, tannins, and terpenoids, indicating strong bioactivity. Treatments consisted of varying extract application rates (5–25 g/plant) applied either before or after nematode inoculation. Results showed that application of mulberry extracts significantly (P < 0.05) reduced nematode population densities and improved plant growth compared to untreated controls. The 15 g treatment applied before nematode inoculation produced the most pronounced suppression of nematode juveniles and eggs, coupled with enhanced root and stem growth. These effects are attributed to the phytochemical constituents of the extract, which may interfere with nematode metabolism and reproduction while promoting plant vigour. The findings suggest that M. alba extracts possess promising nematicidal potential and can be developed as eco-friendly biocontrol agents for sustainable tomato production.

Keywords

Bio-nematicide Meloidogyne incognita mulberry phytochemicals tomato 


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