Control effects of Frankliniella occidentalis due to high and low volume of insecticides in paprika cultivation

Wednesday, November 18, 2015
Exhibit Hall BC (Convention Center)
Na-Young Jin , Department of Applied Biology, Chungnam National University, Daejeon, South Korea
You-Kyoung Lee , Department of Applied Biology, Chungnam National University, Daejeon, South Korea
Yu-Seop Kim , Department of Applied Biology, Chungnam National University, Daejeon, South Korea
Jun-Hack Jeon , Department of Applied Biology, Chungnam National University, Daejeon, South Korea
Bo-Ram Lee , Department of Applied Biology, Chungnam National University, Daejeon, South Korea
Hee Ji Kim , Department of Applied Biology, Chungnam National University, Daejeon, South Korea
Soo Jeung Ahn , Department of Applied Biology, Chungnam National University, Daejeon, South Korea
Young-Nam Youn , Department of Applied Biology, Chungnam National University, Daejeon, South Korea
Yong-Man Yu , Department of Applied Biology, Chungnam National University, Daejeon, South Korea
Large greenhouse complex in paprika cultivation may be suitable a habitat for insect pests such as whitefly, thrips and aphids. Recently, many farmers are using the increased concentration or the number of applying times of insecticides due to the difficulties in insect pest control. However, effective method of insect pest control by using valuable application volume has not been revealed yet, thus standardization of application volume seems to be challenging. This research is to set the application volume to standardize the volume of insecticide and perform the test to see the pest control effect as well as insecticide adhering volume. 5% spinetoram suspension concentrate (SC), 5% cyantraniliprole emulsion (E) and 1.8% abamectin emulsion (E) were applied by using U-shape spray against Frankliniella occidentalis. 5L, 2.5L and 1.25L of insecticide were sprayed with three times to 10 trees and 5L and 2.5L were fair volume for liquid to fully wet leaves and flowers. Insecticide liquid was applied to entire plants including leaves and peduncles. The plant height of paprika was between 2m and 2.3m and patches were attached to both upper part and lower part to check the difference of adhering volume. The control values were checked 3 days after application and results were shown as following. Application of spinetoram showed high control values of 91.5% and 95.6% at 5L and 2.5L applied area, respectively, while slightly low control value was presented at 1.25L. Control values of cyantraniliprole were 88.1% and 82.8% at 5L and 2.5L area, respectively, however, 59.3% of control value was shown at 1.25L. Applying abamectin showed a similar with cyantraniliprole. To conclude, it may be revealed that similarly high control effect can be delivered from applying only a half of recommended and/or practice volume and it is being analyzed to see the difference in adhering volume of insecticide by applying volume.

Key Words : Paprika Cultivation, U-shaped sprayer, low volume of applying liquid, adhering volume

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