Varietal Screening and Comparative Toxicity of Some Plant Extracts for Control of Fusarium wilt of Groundnut (Arachis hypogaea L).

Awurum, A.N. and Uwajimgba, J. (2013) Varietal Screening and Comparative Toxicity of Some Plant Extracts for Control of Fusarium wilt of Groundnut (Arachis hypogaea L). Continental Journal of Agricultural Science, 7 (1). pp. 11-16.

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Abstract

Three varieties of groundnut RMP 12, Mbaise Large, and Samnut 23 as well as leaf extracts of Denettia tripetala, Spondias mombin, benomyl and sterile distilled water were screened for their effects against Fusarium oxysporium, causal agent of Fusarium wilt of groundnut (Arachis hypogaea L.) in the greenhouse. The seeds were sown in 4kg heat sterilized top soil contained in 20cm diameter pots. The pots were arranged in 3 x 4 factorial; in a randomized complete block design (RCBD). Two weeks after planting (2 WAP), the seedlings were inoculated by injection of 3ml (105 spores/ml) strength suspension at the bases of the seedlings and left in a humid chamber. RMP 12 had the best fresh weight and dry matter yield which was significantly (P< 0.05) superior to other varieties, an indication that it could be the most tolerant to the disease. However, Dennettia tripetala and benomyl treated seedlings significantly reduced the severity of the wilt disease better than Spondias mombin. Hence RMP 12 variety and extracts of D. tripetala should be used in IPM programmes by resource- poor farmers in the management of Fusarium wilt disease of groundnut.

Item Type: Article
Uncontrolled Keywords: Plant extracts, Dennettia tripetala, Fusarium oxysporium, IPM.
Author Affiliation: Department of Plant Health Management, Michael Okpara University of Agriculture, PMB. 7267 Umudike, Abia State, Nigeria
Subjects: Plant Protection
Crop Improvement
Divisions: Groundnut
Depositing User: Mr. SanatKumar Behera
Date Deposited: 22 May 2013 05:13
Last Modified: 22 May 2013 05:13
Official URL: http://www.wiloludjournal.com/ojs/index.php/cjAgsc...
URI: http://eprints.icrisat.ac.in/id/eprint/10597

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