Betamix: desmedipham/phenmedipham

Trade Names	Betamix
Formulation	EC
Guaranteed active concentration	(1:1) 150 g/L
Groups	7
Ontario Schedule	2
Winter Storage	B
Chemical Family	Phenylcarbamate
Crop and/or Non-Crop Registrations	Sugar beets
Sensitive Weeds	Pigweed species, lamb's-quarters, wild mustard, wild buckwheat, green and yellow foxtail. Other weeds like ragweed species, nightshade species, kochia, goosefoot and stinkweed will be controlled when application of desmedipham/phenmedipham is made following treatment with another preplant or preemergence herbicide.
Uptake and Translocation	Desmedipham/ phenmedipham is readily absorbed by foliage where it inhibits photosynthesis in the chloroplasts of leaf cells.
Basis of Selectivity	Rapid metabolism in tolerant species.
Application Methods	Postemergence beginning at the 2 true-leaf stage of sugar beets. Up to the 2- or 4-leaf stage of weeds depending upon species. Best control is exhibited on very small, actively growing weeds.
Residual Activity	Soil half-life of desmedipham is less than 1 month and of phenmedipham is 25-30 days.
Unique Characteristics	Desmedipham/phenmedipham may cause temporary growth retardation and/or chlorosis or tip-burn to sugar beets when applied to stressed plants. Normal growth is resumed in 10 days after application.
Manufacturer / Registrant	Bayer Cropscience