Evaluation of Pesticide Treatment for Control of Rice stripe virus after Mass Migration of Small Brown Planthoppers
Evaluation of Pesticide Treatment for Control of Rice stripe virus after Mass Migration of Small Brown Planthoppers
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DOI：
10.5423/rpd.2012.18.3.245
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发表时间：
2012-01-01
影响因子：
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通讯作者：
Sub, Lim， Hyoun
中科院分区：
文献类型：
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作者：
Byung-Ryun, Kim，;Kwang-Seop, Han，;Sub, Lim， Hyoun
灰飞虱（Laodelphax striatellus）是韩国重要的水稻害虫之一，它不仅通过吸汁为害水稻，还通过传播水稻条纹病毒（Rice stripe virus，RSV）危害水稻，RSV的发生与灰飞虱（Small brown planthopper，SBPH）的发生密切相关。因此，控制SBPH对于RSV的管理非常重要。2011年6月在Taeanup，Geunheungmyon和Gonammyon在Taeangun通过空中网陷阱收集的大规模迁移的SBPH进行了病毒携带状态和农药“Myungtaja”对RSV控制的影响的检查。RT-PCR检测1,217株水稻黑条矮缩病毒（RBSDV），其中RSV阳性率为7.7%，RBSDV阳性率为4.4%。在大规模迁移后，在稻田上喷洒一次或两次杀虫剂“Myungtaja”，并与未处理的田地进行比较。RSV的发病率不受喷洒“Myungtaja”频率的影响，但受农药处理时间的影响。Myungtaja在大规模迁移后57天内进行的治疗导致了最有效的RSV控制，使RSV发病率与对照组相比下降了87.6%。因此，我们得出结论，杀虫剂喷洒RSV控制是最有效的，当它完成后57天内大规模迁移。
The small brown planthopper (Laodelphax striatellus) is one of the most important rice pests in Republic of Korea because it damages rice plants not only by sap-sucking but also by transmitting Rice stripe virus (RSV).Outbreaks of RSV are closely related to outbreaks of the small brown planthopper (SBPH). Therefore, it is very important to control SBPH for the management of RSV. Mass-migrating SBPH collected by aerial net traps in June 2011 at Taeanup, Geunheungmyon and Gonammyon in Taeangun were examined for virus carrier status and effects of the pesticide, ‘Myungtaja’, on the control of RSV. Among 1,217 SBPH trapped,about 7.7% were detected as RSV positive and 4.4% were positive for Rice black streak dwarf virus (RBSDV)by RT-PCR. After the mass migration, pesticide ‘Myungtaja’ was sprayed once or twice on rice fields and compared to untreated fields. The incidence of RSV was not affected by the frequency of spraying ‘Myungtaja’ but was influenced by the time of pesticide treatment. Myungtaja’ treatment within 57 days after mass migration resulted in the most efficient RSV control, resulting in RSV incidence decreased by 87.6% compared to the control. Therefore, we conclude that pesticide spraying for RSV control was most effective when it was done within 57 days after mass migration.