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http://dx.doi.org/10.5423/RPD.2012.18.3.245

Evaluation of Pesticide Treatment for Control of Rice stripe virus after Mass Migration of Small Brown Planthoppers  

Jeong, Tae-Woo (Chungnam Tean Agriculture Technology & Extension)
Kim, Byung-Ryun (Agricultural Environment Division, Chungcheong nam-do Agricultural Research & Extension Services)
Han, Gwang-Seop (Agricultural Environment Division, Chungcheong nam-do Agricultural Research & Extension Services)
Kang, Dong-Woo (Chungnam National University, College of Life Sciences and Agriculture, Department of Applied Biology)
Jeong, Iim-Young (Chungnam Tean Agriculture Technology & Extension)
Lim, Hyoun-Sub (Chungnam National University, College of Life Sciences and Agriculture, Department of Applied Biology)
Kim, Jeong-Soo (Crop Protection Division, National Academy of Agricultural Service)
Publication Information
Research in Plant Disease / v.18, no.3, 2012 , pp. 245-249 More about this Journal
Abstract
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 5-7 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 5-7 days after mass migration.
Keywords
Mass migration; Myungtaja; Rice stripe virus; Small brown planthopper;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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