Effect of Leaves Crude Extract from Hedge Flower (Lantana camara Linn.) as the Insecticidal Activity, Oviposition Deterrent and Progeny Deterrent on Cowpea Weevil (Callosobruchus maculatus (F.))

Abstract

The problem in mung bean storage is destroy by insect pests of mung bean. Especially, the cowpea weevil, Callosobruchus maculatus (F.), is one of the major insect in mung bean storage. The objective of this study is the effect of leaves crude extract from Lantana camara Linn as the insecticidal activity by fumigation method at 30.71, 61.40, 122.85, 245.70 and 491.40 mg/L. The oviposition inhibition and progeny deterrent by coating on cowpea method at 0, 0.5, 1, 2, 4 and 8% (w/v) were applied. The treatments were arranged in a completely randomized design (CRD) and replicated 5 times on 10 adults. The experiment was conducted at laboratory. The results found that the insecticidal activity, oviposition deterrent and progeny deterrent of extract from L. camara on the cowpea weevil were significantly effective (P<0.05) when compared with the control. At the concentration of 491.40 mg/L, the extract
from L. camara were the highest effective as the insecticidal activity by fumigation method 100% and the LC50 value with 105.28 and 33.73 mg/L at 24 and 48 h, respectively. At the concentration of 8%, the extract from L. camara were the highest effective as the oviposition inhibition and progeny deterrent on cowpea weevil. The percent of oviposition deterrent was 95.95% when compared with the control. The percent of progeny deterrent was 94.50% and the time of development was 43.80 + 0.74 days. Whereas the control, the time of development was 25.80 + 1.16 days.