title: Field assessment of B-2 as a new molluscicide for the control of Oncomelania nosophora.
abstract: Sodium 2,5-dichloro-4-bromophenol named B-2 was evaluated for application in the field as a molluscicde against Oncomelania nosophora. A dosage of 10 g/m2 as 25% liquid form or 25 g/m2 as 10% granular form of B-2 was suggested as a standard dose for the control of O. nosophora. The residual concentration of B-2 in the soil after application was observed to decrease more rapidly than did that of NaPCP. The residual level of B-2 in the rice grains harvested from the paddy field in which the chemical was applied at most 4 times during the planting season did not exceed 0.03 ppm.
mesh_terms: D000818:Animals; D002733:Chlorophenols; D008975:Molluscacides; D010571:Pest Control; D010573:Pesticide Residues / Q000032:analysis; D012908:Snails
chemical_list: D002733:Chlorophenols; D008975:Molluscacides; D010573:Pesticide Residues; C023970:2,5-dichloro-4-bromophenol