Evaluation of Spodoptera exempta nucleopolyhedrovirus (SpexNPV) for the field control of African armyworm (Spodoptera exempta) in Tanzania
Evaluation of Spodoptera exempta nucleopolyhedrovirus (SpexNPV) for the field control of African armyworm (Spodoptera exempta) in Tanzania
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DOI：
10.1016/j.cropro.2007.04.005
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发表时间：
2008-01-01
期刊：
影响因子：
2.8
通讯作者：
Wilson, Kenneth
中科院分区：
文献类型：
--
作者：
Grzywacz, David;Mushobozi, Wilfred L.;Wilson, Kenneth
非洲粘虫Spodoptera excepta是东非和南部非洲大部分地区的一种主要的间歇性迁移作物害虫。对这种害虫的控制一直依赖于使用合成化学杀虫剂。然而，这种做法无法保护贫穷农民，而且由于环境和成本原因，越来越不能接受。在坦桑尼亚进行了一项田间试验计划，以评估地方性杆状病毒S。豁免核型多角体病毒（SpexNPV），作为替代对照。田间试验表明，地面和空中应用SpexNPV对草地上的粘虫暴发可以引发NPV疾病的暴发和种群崩溃。SpexNPV在每公顷1 × 10（12）个闭塞体（OB）施用时是有效的，如果施用于早期爆发，当幼虫处于I-III龄时，在处理后3-10天出现大量死亡。从这些试验的数据表明，SpexNPV可以有一个潜在的作用，作为化学杀虫剂的替代品，在战略粘虫管理计划。(C)2007爱思唯尔有限公司版权所有。
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. (C) 2007 Elsevier Ltd. All rights reserved.