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Nematicidal Activity of Newbouldia laevis (P. Beauv.) Seem. Leaf Extract Against Root-Knot Nematode (Meloidogyne javanica (Treub.) Chitwood on Eggplant (Solanum spp.) in Jalingo, Nigeria

Umar I., Malgwi A. M., Mamman A.

Asian Journal of Agricultural and Horticultural Research · pp. 606–613 · Published 28 Dec 2023

10.9734/ajahr/2023/v10i4298

Abstract

Solutions to problems of pests ravaging man’s crops abound in nature and are known to be quite soft on the environment. Extracts of leaves of Newbouldia laevis were assayed for activity against the rootknot nematode, Meloidogyne javanica. The treatments which included the crude extract, 5 ml and 10 ml dilutions and Control as distilled water were used both in the laboratory and field experiments. Twelve petridishes containing 1000 nematode eggs and another 12 petridishes containing 1000 juveniles were each treated with the extracts and arranged in complete randomized design. Results showed the crude extract was the most effective in reducing the hatching of M. javanica eggs (90.33%) and caused greater mortality of juveniles (93.10%) than all other treatments. In the field experiment, twelve 2 m x 2 m-sized prepared plots were transplanted with nine three week old seedlings of ‘Eggplant cv Yar Bello’ into holes drenched with 10 ml of appropriate treatment. Ten ml of these treatments were drenched into soil around the plants weekly for eight weeks. Result showed that the crude extract performed better than other treatments in all parameters some of which included plant height (112.77 cm in 2017; 113.33 cm in 2018), number of leaves  (120.00 in 2017; 120.77 in 2018), number of fruits  (35.44 in 2017; 35.88 in 2018), fruit weight  (73.81g in 2017; 74.44 g in 2018), yield  (58.70 tons/ha in 2017;59.94 tons/ha in 2018), final nematode population  (159.66 in 2017; 149.26 in 2018) and reproduction factor  (0.42 in 2017; 0.39 in 2018). In conclusion, extract of N. laevis particularly the crude extract shows potential for managing M. javanica and allowing for profitable cultivation of ‘Eggplant cv Yar Bello’.

Rootknot juvenile mortality egg hatch drenching

References (17)

  1. 1 A comparison of methods of collecting inocula of Meloidogyne spp., including a new technique
  2. 2 The Useful Plants of West Tropical Africa [DOI]
  3. 3 EFFECT OF BARLERIA ACANTHOIDES VAHL. ON ROOT-KNOT NEMATODE INFECTION AND GROWTH OF INFECTED OKRA AND BRINJAL PLANTS
  4. 4 Evaluation of plant extracts in the management of root- knot nematode Meloidogyne incognita on cowpea (Vigna unguiculata (L) Walp)
  5. 5 Management of Root-Knot Nematode (Meloidogyne incognita) on Cucumber with the Extract and Oil of Nematicidal Plants [DOI]
  6. 6 Evidence of inhibitory effect of Pseudomonas fluorescens CHA0 and aqueous extracts on tomato plants infected with Meloidogyne javanica (Tylenchida: Heteroderidae) [DOI]
  7. 7 Bionematicidal Potential of Some Incorporating Plants on Meloidogyne javanica Control on Tomato [DOI]
  8. 8 Efficacy of botanicals on mortality of second stage juveniles and egg hatching of Meloidogyne javanica L: An eco-friendly management approach
  9. 9 Control of root-knot nematodes using wild plants colonized Sinai, Egypt [DOI]
  10. 10 Effects of Some Indigenous Plant Extracts on Meloidogyne javanica Infesting Eggplant and Pepper under Greenhouse Conditions
  11. 11 Use of Leaf Extract and Powder of Ipomoea asarifolia for Control of Root-Knot Nematode (Meloidogyne javanica) on Okra in Jalingo Nigeria [DOI]
  12. 12 Potential of green manure crops in suppressing root knot nematodes in French beans
  13. 13 Activity of Catambra Extracts against Meloidogyne spp. [DOI]
  14. 14 Effects of Plant Leaf Extracts on Egg-Masses Hatching and Juveniles Mortality of the Root-Knot Nematode, Meloidogyne Javanica [DOI]
  15. 15 Journal of Pharmacognosy and Phytochemistry [DOI]
  16. 16 Journal of Biology, Agriculture and Healthcare [DOI]
  17. 17 American Journal of Experimental Agriculture [DOI]

Cited by 2

Unlocking the nematicidal potential of Pontederia crassipes leaf extract against Meloidogyne javanica: In vitro, greenhouse, phytochemical, and in silico analyses

Gulam Rabbani, Javed Ahmad Wagay, Mohd Sajid Ali · Physiological and Molecular Plant Pathology · 2026

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