Pyrimisulfan is a novel sulfonanilide herbicide with high herbicidal activities against major troublesome weeds in paddy elds. To use this chemical compound as a one-shot herbicide for rice, we have developed a controlled-release formulation, pyrimisulfan-1 kg granule (containing 6.7 g a.i.). is granule formulation applied at pre-emergence to the three-leaf stage at 10 kg/ha e ciently controlled troublesome weeds, such as Echinochloa spp., perennial weeds, and sulfonylurea-resistant weeds. Furthermore, pyrimisulfan-1 kg granule exhibited consistent herbicidal e cacy under simulated over ow conditions. erefore, pyrimisulfan-1 kg granule is suitable for use as a one-shot herbicide and is an e ective tool for rice cultivation systems requiring reduced pesticide applications.

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