Management of root-knot nematode (Meloidogyne spp.) on okra (Abelmoschus esculuntus (L.) Moench) with aqueous sesame seed extract – IJAAR @Ghana

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  • Frederick Kankam, Elias Nortaa Kunedeb Sowley*, Mohammed Alhassan
  1. Department of Agronomy, Faculty of Agriculture, University for Development Studies, Tamale, Ghana

Abstract

Okra (Abelmoschus esculuntus (L.) Moench) is a popular vegetable in Ghana but its production is limited by nematode infestation of soils. Pot experiments were carried out in a plant house at the Nyankpala campus of the University for Development Studies (UDS), Tamale to assess the effect of aqueous sesame seed extract on rootknot nematodes (Meloidogyne spp.) of okra. 
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The experiment was laid out in a completely randomized design with each of the four treatments replicated four times.Treatments consisted of three levels of sesame seed extract (10, 20 and 30 g/50ml) per pot and a control (0 g/50ml).All pots were inoculated with 1000 root-knot nematode eggs a week before the application of the treatments. Data collected included plant height, number of leaves, stem girth, fruit weight, fresh root weight, number of fruits, nematode eggs per 50 g of fresh soil and root galling index.

The results showed that aqueous extract of S. indicum at 30 g/50 ml (w/v) suppressed root-knot nematodes better than the control. Similarly, okra plants treated with S. indicum had the lowest infection index (root gall). There were significant differences (P<0.05) among the treatment means for number of fruits and fruit weight of okra between aqueous sesame seed extract at 30 g/50 ml and the control. Yield of okra can be enhanced and nematode population reduced through the application of sesame seed extract preferably at 30 g/50ml
 

 

Source of Articles: Volume 6, Number 4, April 2015 – IJAAR

Journal Name: International Journal of Agronomy and Agricultural Research (IJAAR)

Publication Name: International Network For Natural Sciences (INNSPUB)

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