Trapping and controlling effects of the yellow sticky card on rice planthoppers

Author of the article:CHANG Xiao-Li1** WU Xiang-Wen2 DU Xing-Bin3 YUAN Yong-Da1 ZHANG Tian-Shu1LU Shuang4 SHEN Hui-Me

Author's Workplace：1. Institute of Eco-Environmental Protection, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; 2. ShanghaiAgricultural Technology Extension and Service Center, Shanghai 201103, China; 3. Zhuanghang Agricultural Science and Technology Experimental Station, Shanghai Academy of Agricultural Sciences, Shanghai 201415, China; 4. Shanghai Pudong NewDistrict Agro-Technology Extension Center, Shanghai 201201, China

Key Words：rice planthoppers, yellow sticky card, trapping, control

Abstract：

[Objectives]  The controlling effect of the yellow sticky card on rice planthoppers was estimated, which will provide scientific basis for decreasing the dosage of the chemical insecticides. [Methods]  Yellow sticky cards were used to trap rice planthoppers in the field, which was compared with white porcelain plate-flapping method. [Results]  The number of the adult white-backed planthoppers Sogatella furcifera (Horváth)(WBPH) was maximum in the late August in Shanghai. The highest population density of both the adult small brown planthoppers, Laodelphax striatellus (Fallén)(SBPH) and brown planthoppers, Nilaparvata lugens (Stål) (BPH) and planthoppers (PH) occurred in the medium September. On the whole, the number of adult SBPHs was the highest among three adult rice planthoppers. The maximum of adult SBPHs was (6.12±4.50) per card per day. There were 18 rice varieties that the averages of adult SBPHs were equal or larger than two per card per day, and for the other six rice varieties, the averages were less than two, and all cards trapped adult SBPHs during the investigating period. For WBPH, the maximum of adult WBPHs was (2.29±0.13) per card per day. There were seven rice varieties that the averages of adult WBPHs were equal or larger than one per card per day, and for the other 17 rice varieties, they were less than one, and all cards trapped adult WBPHs. For BPH, the maximum of adult BPHs was (1.50±1.85) per card per day. There was one rice variety that the average of adult BPHs was equal or larger than one per card per day, and for the other 23 rice varieties, they were less than one, especially, there were three rice varieties of which didn’t trapped adult BPHs. In conclusion, the maximum of three rice planthoppers was (7.50±4.36) per card per day. There were 23 rice varieties that the means of adult PHs were equal or larger than two per card per day, and only one rice varieties that the average was less than two. The height of the yellow sticky card was an important factor for trapping adult rice planthoppers. The closer the distance from the lower fringe of the yellow sticky card to the top of the rice was, the more adult rice planthoppers were trapped. [Conclusion]  Using yellow sticky card in rice field was significantly effective for controlling adult rice planthoppers, because it can greatly reduce the number of adult rice planthoppers. It will be a perfect non-chemical control measure, which will effevtively decrease the usage of chemical insecticides.