EFEKTIVITAS ATRAKTAN DALAM MEMERANGKAP LALAT BUAH BACTROCERA SPP. DAN KAJIAN AWAL FLUKTUASI POPULASINYA PADA PERTANAMAN JERUK DI KABUPATEN KARO

The objective of this research is to know the effectiveness of attractans on fruit fly Bactrocera spp. trapping and its population fluctuation on citrus plant at Karo district. The research was conducted at Suka village-Sub district of Tiga Panah. Five atractans have been used, namely: metyl eugenol combination of metyl eugenol with detergent, metyl eugenol with rock sugar, metyl eugenol with metindo and yellow glue. The research
was carried out from July to August 2008. The result showed, there were 167 flies (28.2%) that be trapped in metyl eugenol, 133 flies (22.31%) in metyl eugenol combination with detergent, 113 flies (18.95%) in metyl eugenol combination with rock sugar, 104 flies (17.44%) in metyl eugenol combination with metindo and 79 flies (13.25%) in yellow glue. It means, metyl eugenol was the most effective attractant for fruit fly trapping. Higher density of fruit fly occured in the fourth week of July and its lowest density occured in the end of second week of August.