Abstract:
Lettuce (Lactuca sativa L.) is a vegetable commodity that has high economic value. However, in the
processof cultivation, this plant experienced problems which resulted in a decrease in total production
yields andeven resulted in crop failure caused by pest attacks, one of which was armyworm. Therefore, it
is necessaryto have an environmentally friendly control to suppress this pest population. One way of
controlling thatcan be used is to use areca nut. This research was conducted in September 2021 †“
October 2021 at theProduction Laboratory of the Department of Agro ecotechnology, LambungMangkurat
University,Banjarbaru. The research design used was a completely randomized design (CRD) with 1
factor, with 5treatments and 4 replications. The treatments used included P0 (control), P1(concentration 1
g/l water), P2 (concentration 5 g/l water, P3 (concentration 10 g/l water), and P4(concentration 15 g/l
water). The results obtained showed that P4 treatment with a concentration of 15 g/l of water was
effective in controlling armyworms because it showed the best results in the percentage oftotal mortality,
and resulted in a mortality of more than 50% within 42 hours of observation after beingtreated and the
LC50 value in this study was at a dose of 44.309 g/l.
