COMPARATIVE EVALUATION OF CASTOR (RICINUS COMMUNIS) AND PONGAMIA (PONGAMIA PINNATA) LEAF POWDERS FOR ECO-FRIENDLY SUPPRESSION OF PLANT PARASITIC NEMATODES (MELOIDOGYNE SPP.) IN OKRA (ABELMOSCHUS ESCULENTUS L. MOENCH)

Authors

Keywords:

Okra, Nematodes, Leaf powders, Organic amendments, Suppression

Abstract

Root-knot nematodes (Meloidogyne spp.) are major soil-borne pests that reduce okra yield and profitability in tropical and subtropical regions. Concerns over the environmental safety of synthetic nematicides have led to increased interest in botanicals. This study compared the nematicidal performance of Castor (Ricinus communis) and Pongamia (Pongamia pinnata) leaf powders at 10 g per treatment under field conditions in Nigeria. A randomized split-plot design was used with Carbofuran as a standard chemical control. Castor leaf powder at (10 g) per treatment significantly reduced nematode populations and improved plant growth and yield, performing on par with Carbofuran and better than pongamia. These findings reinforces the viability castor leaf powder (10 g) for nematode management in okra cultivation.

Author Biographies

Fatima Kubili Mohammed

Department of Crop protection and Professor of Plant Nematology

Ahmadu Bukar

Department of Agronomy and Soil Science

Lecturer 1

Dimensions

Adamu, I. B., Adamu, I., Talha, I. Z., Ngala, A. L., Samaila, D., & Turajo, A. A. (2024). Soil fertility assessment and land suitability evaluation for wheat and rice cultivation in selected farmlands of Konduga LGA, Sudan Savannah Zone, Borno State. Journal of Arid Agriculture, 25(2).

FAO. (2023). FAOSTAT Statistical Database. Food and Agriculture Organization of the United Nations. https://www.fao.org/faostat/en/

IITA. (2020). Okra Production and Management. International Institute of Tropical Agriculture.

Kouakou, K., Soro, L. C., Kouadio, L. P., & Sangaré, A. (2023). Nematicidal potential of dried castor leaf powder against Meloidogyne spp. in tomatoes. African Journal of Agricultural Research, 18(6), 120–132.

Saha, H., Verma, A. K., & Raj, A. (2019). Nematicidal potential of Pongamia pinnata leaf extract on Meloidogyne incognita. Biopesticides International, 15(1), 35–42.

Sharaf, S. A., El-Morsi, A. A., & Abdel-Azim, H. M. (2016). Phytochemical constituents and nematicidal activity of castor leaf extract. Egyptian Journal of Phytopathology, 44(2), 67–75.

Singh, R. S., & Sitaramaiah, K. (2012). Use of leaf powders and oil cakes in managing plant parasitic nematodes. Indian Journal of Nematology, 42(1), 25–30.

Whitehead, A. G., & Hemming, J. R. (1965). A comparison of methods for extracting small vermiform nematodes from soil. Annals of Applied Biology, 55(1), 25–38.

Xiong, R. G., Li, J., Cheng, J., Wu, S. X., Huang, S.Y., Zhou, D. D. & Saimaiti, A.(2023). New insights into the protection of dietary components on anxiety, depression, and other mental disorders caused by contaminants and food additives. Trends Food Science and Technology.

Jha, Y., (2021) Macrophytes as a potential tool for crop production by providing nutrient as well as protection against common phyto pathogen Highlights Bioscience, 4

Published

08-10-2025

How to Cite

Kumshe, I. B., Mohammed, F. K., Bukar, A., & Muastapha, M. (2025). COMPARATIVE EVALUATION OF CASTOR (RICINUS COMMUNIS) AND PONGAMIA (PONGAMIA PINNATA) LEAF POWDERS FOR ECO-FRIENDLY SUPPRESSION OF PLANT PARASITIC NEMATODES (MELOIDOGYNE SPP.) IN OKRA (ABELMOSCHUS ESCULENTUS L. MOENCH). FUDMA JOURNAL OF SCIENCES, 9(10), 240-242. https://doi.org/10.33003/fjs-2025-0910-3863

Issue

Vol. 9 No. 10 (2025): FUDMA Journal of Sciences - Vol. 9 No. 10

Section

Research Articles
Copyright & Licensing

Copyright (c) 2025 Isa Bukar Kumshe, Fatima Kubili Mohammed, Ahmadu Bukar, Muhammad Muastapha

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Kumshe, I. B., Mohammed, F. K., Bukar, A., & Muastapha, M. (2025). COMPARATIVE EVALUATION OF CASTOR (RICINUS COMMUNIS) AND PONGAMIA (PONGAMIA PINNATA) LEAF POWDERS FOR ECO-FRIENDLY SUPPRESSION OF PLANT PARASITIC NEMATODES (MELOIDOGYNE SPP.) IN OKRA (ABELMOSCHUS ESCULENTUS L. MOENCH). FUDMA JOURNAL OF SCIENCES, 9(10), 240-242. https://doi.org/10.33003/fjs-2025-0910-3863

Most read articles by the same author(s)