Farmers’ perceptions of climate change and its implication on livestock production in mixed-farming system areas of Bale highlands, Southeast Ethiopia; Challenges and extents of Soil and Water Conservation measures in Guba-Lafto Woreda of North Wollo, Ethiopia; Evaluation of milk production performance of lactating Fogera cows fed with urea and effective micro-organisms treated rice straw as basal diet.

E3 Journal of Agricultural Research and Development

E3 Journal of Agricultural Research and Development Vol. 2 (3) pp. 086-091, October 2012; © E3 Journals; ISSN 2276-9897


Evaluation of plant extracts on infestation of root-knot nematode on tomato (Lycopersicon esculentum Mill)

Wondimeneh Taye1 * , P. K. Sakhuja2 , Tadele Tefera2
1 Faculty of Agriculture, Department of Plant Sciences, Wolaita Sodo University, P.O box 138, Ethiopia
2 School of Plant Sciences, Haramaya University, P.O box 138, Dire-Dawa, Ethiopia
*Corresponding Author E-mail: wondimeneh2008@gmail.com
Accepted 14 September 2012

Abstract

Root-knot nematode, Meloidogyne incognita, is the major limiting factor in tomato production in many regions of the world including Ethiopia. For its management, different plant species (botanicals) are being tried in different forms as an alternative to nematicides. The nematicidal potential of baker tree (Milletia ferruginea), Bitter leaf (Vernonia amygodalina), parthenium (Parthenium hysterophorus), lantana (Lantana camara), Mexican marigold (Tagetes minuta), Mexican tea (Chenopodium ambrosioides), Neem (Azadirachta indica) and Pyrethrum (Chrysanthemum cinerariafolium) was assessed against M. incognita on tomato under field conditions. Aqueous extracts of the plants (20 g/100 ml w/v) were evaluated at 3 and 5% concentrations which was applied as soil drench one day after transplanting the seedling. Pronounced reduction in final nematode population density, root-knot index and a significant increase yield per plant and total yields of tomato were observed from plants treated with 5% concentration of lantana and Mexican marigold leaf extracts compared to any other tested plant extract. These plant extracts might have played an important role in reducing the nematode infestation and population buildup on tomato. Thus, these results suggest that application of lantana and Mexican marigold leaf extracts would be a good alternative to manage root-knot nematode populations in tomato production.

Keywords: Botanicals, Meloidogyne incognita, Root-knot nematodes, Tomato

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