Abstract:
White sweetclover(Melilotus albus Desr.)was planted in a mulberry garden to attract chafer beetle(Serica orientalis Mot schulsky)and other insects,and then sprayed with insect icides to kill the insects.The new technique was a good way to control beetles in spring.In this study,the attraction effects of white sweetclover to Serica orientalis were compared with some crop seedlings and weeds.In this paper the olfactory test,elect roantennogram(EAG)responses,indoor bioassay and field tests were employed to study the at tractive effects of white sweetclover to chafer beetles.The main component coumarin of sweetclover plant extracts was analyzed and identi-fied. The results showed that the attraction of white sweetclover to chafer beetle was stronger than corn,wheat,soybean seedlings, potato pieces, leaves of peach and poplar trees.The attraction to beetles was improved when seedling of soybean and foxtail grass were sprayed with coumarin solution. Chafer beetles' EAG responses to Lambsquarters and white sweetclover were most significant as compared with Patience Dock and coumarin solutions.
Key words:
Serica or ientalis Mot schul sky,
Molilotus alba Desr,
Olfactory selection,
electroantennog ram,
Bioassay
CLC Number:
Han Deyuan, Li Yongwei, Zhang Zhili. A Study on the Attractive Effects of White Sweetclover and Other Plants to Chafer Beetle[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1998, 13(1): 95-100. doi: 10.3321/j.issn:1000-7091.1998.01.019.