Herbicidal control using sulfentrazone and dithiopyr
View Patent ↗The present invention provides an herbicidal method for selective pre- and post-emergence control of broadleaf and grass weeds by applying a synergistic herbicidal composition, wherein the composition comprises a mixture of sulfentrazone and dithiopyr.
1. A method for selective synergistic control of broadleaf and grass weeds in a turf site, said method comprising applying an herbicidal composition comprising sulfentrazone and dithiopyr in a ratio of from 1:1 to 1:4, at a rate of from 0.0625 lb/ac to 0.25 lb/ac of sulfentrazone in combination with from 0.125 lb/ac to 0.5 lb/ac of dithiopyr to a locus where weeds are present or are expected to be present.
2. The method of claim 1 wherein the application is pre-emergence and the weeds are selected from the group consisting of crabgrass, chickweed and cudweed.
3. The method of claim 1 wherein the application is post-emergence and the weeds are selected from the group consisting of crabgrass, clover, medic, buckhorn plantain, sorrel and dandelion.
4. The method of claim 1 which comprises applying the individually formulated herbicides, either together or sequentially, to a locus where weeds are present or expected to be present.