Sumitomo Chemical Company, Limited

Yukari Kajiwara

Takanori Tabuchi

Takeshi Kajiwara

Yasushi Tanaka

Makoto Noguchi

Provided is a method which exerts an excellent effect in controlling a pest in a field of soybean, corn or cotton. A method of controlling a pest (weed, harmful arthropod) in a field of soybean, corn or cotton, including treating a field before, at or after seeding with a seed of soybean, corn or cotton treated with one or more diamide compounds, with one or more PPO-inhibiting compounds selected from the group consisting of flumioxazin, sulfentrazone, saflufenacil, oxyfluorfen, fomesafen, fomesafen sodium and a compound represented by the formula (I): 

Method of controlling pest

The present invention provides a compound represented by the formula: wherein Q represents a fused heterocyclic group, X and Y are the same or different and each represent an optionally halogenated lower alkyl group, an optionally halogenated lower alkoxy group, etc., or a salt thereof, as well as a herbicide comprising the compound or a salt thereof, which exhibits a significant effect for control of sulfonylurea herbicide-resistant weeds in paddy fields and can reduce the number of active ingredients in a combined preparation and a method of controlling sulfonylurea herbicide-resistant weeds which comprises using the same.

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Takarazuka, Japan

Yukari Kajiwara