Evaluation of Spodoptera exempta nucleopolyhedrovirus (SpexNPV) for the field control of African armyworm (Spodoptera exempta) in Tanzania

Grzywacz, David and Mushobozi, Wilfred L. and Parnell, Mark and Jolliffe, Flavia and Wilson, Kenneth (2008) Evaluation of Spodoptera exempta nucleopolyhedrovirus (SpexNPV) for the field control of African armyworm (Spodoptera exempta) in Tanzania. Crop Protection, 27 (1). pp. 17-24. ISSN 0261-2194. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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The African armyworm Spodoptera exempta is a major episodic migratory crop pest over much of Eastern and Southern Africa. Control of this pest has been reliant on the use of synthetic chemical insecticides. However, this approach fails to protect poor farmers and is becoming unacceptable for environmental and cost reasons. A programme of field trials was conducted in Tanzania to evaluate the endemic baculovirus, the S. exempta nucleopolyhedrovirus (SpexNPV), as an alternative control. Field trials demonstrated that both ground and aerial application of SpexNPV to armyworm outbreaks on pasture can initiate outbreaks of NPV disease and population collapses. The SpexNPV was effective when applied at 1 x 10(12) occlusion bodies (OB) per hectare if applied to outbreaks early, when larvae are in I-III instar-mass mortalities appear 3-10 days post treatment. The data from these trials indicate that SpexNPV can have a potential role as a substitute for chemical insecticides in strategic armyworm management programmes.

Item Type: Article
Uncontrolled keywords: Spodoptera exempta; African arrnyworm; migratory pest; baculovirus; nucleopolyhedrovirus; biological control; IPM; Africa
Subjects: S Agriculture
Divisions: Faculties > Science Technology and Medical Studies > School of Mathematics Statistics and Actuarial Science > Statistics
Depositing User: Suzanne Duffy
Date Deposited: 23 Feb 2009 15:46
Last Modified: 28 May 2014 15:25
Resource URI: https://kar.kent.ac.uk/id/eprint/15131 (The current URI for this page, for reference purposes)
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