Bispyribac-sodium
Structural Formula:
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Mode of action: Selective, systemic post-emergence herbicide, absorbed by foliage and roots.
Uses: Control of grasses, sedges and broad-leaved weeds, especially Echinochloa spp.in direct-seeded rice, at rates of 15-45 g/ha.
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| Grasses | Sedges | Broad-leaved weeds | Echinochloa |
Formulation: 97%TC, 10%SC, 40%SC, 20%WP.
Applications:
One application of 22 g ai/ha is usually sufficient and the product can be used in dry-seeded and water-seeded rice cultivations as a pre- or post-flood treatment. In US field trials, bispyribac-sodium controlled propanil-reistant Echinochloa species (Weed Tech, 2002). Crop safety varies amongst the US rice cultivars tested (Cocodrie and Bengal) and tolerance may be associated with the growth stage at application. Kumiai recommends one application per season for herbicidal use and two applications per season for growth regulator use.
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