Rice bug, Leptocorisa acuta (Thurnberg), is a serious pest of rice during the crop’s reproductive stage. Many synthetic insecticides are used to manage the pest and this resulted in the accumulation of insecticide residues in the harvested produce (Chinniah et al 1998). To identify alternatives to synthetic insecticides, the efficacy of five plant products (see table) against rice bug was tested in irrigated rice (variety ADT36) under field conditions from 1999 to 2002. The experiment used a complete randomized block design with three replications. Fenthion 100 EC 500 mL ha–1 was the check. Plot size was 5 m × 4 m.