Licensed under a Creative Commons Attribution 4.0 International License Fall Armyworm (Spodoptera frugiperda) is one of the new pests from the Lepidoptera class, which causes huge losses for farmers, especially in corn plantations. The purpose of this study was to determine the effectiveness of cigarette butt waste and soursop leaf (Annona muricata L.) extracts as biopesticides against fall armyworms by observing the mortality and analyzing their LC 50 . Extraction of cigarette butts waste and soursop leaves by ethanol 96% as solvent was carried out using Microwave-Assisted Extraction (MAE) method. As the comparison, the maceration and soxhletation extraction of soursop leaves were conducted and analyzed their chemical content by using LC-MS/MS instrument. The insecticide study used a completely randomized design (CRD) method to treat larvae instar III with cigarette butt waste and soursop leaf extracts with various concentrations in three repetitions. Data analysis was performed using probit analysis. The results showed that soursop leaf extract contained four major acetogenin compounds, namely muricatalicin, annohexocin, robustocin, and epoxymurin, with a total percentage of 31.41% by using MAE method, which is higher than the acetogenin content of the maceration and soxhletation extracts (23.73% and 17.78%, respectively). Both cigarette butt waste and soursop leaf extracts were effective as biopesticides with an LC 50 value of 4.900% and 4.114%, respectively, in 12 hours of observation.
In the title compound, C15H11F2N3O2S, the dihedral angle between the fluorobenzene rings is 88.43 (10)° and that between the central semithiocarbazide grouping is 47.00 (11)°. The dihedral angle between the amide group and attached fluorobenzene ring is 50.52 (11)°; the equivalent angle between the carbonylthioamide group and its attached ring is 12.98 (10)°. The major twists in the molecule occur about the C—N—N—C bonds [torsion angle = −138.7 (2)°] and the Car—Car—C—N (ar = aromatic) bonds [−132.0 (2)°]. An intramolecular N—H⋯O hydrogen bond occurs, which generates an S(6) ring. In the crystal, the molecules are linked by N—H⋯O and N—H⋯S hydrogen bonds, generating (001) sheets. Weak C—H⋯O and C—H⋯F interactions are also observed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.