Method of controlling weeds in warm season turfgrass
The present invention relates to a method for controlling dallisgrass or tropical signalgrass in warm-season turfgrass, comprising applying to the warm-season turfgrass to the locus of the warm-season turfgrass an effective rate of pinoxaden.
1. A method for controlling a weed selected from tropical signalgrass, tropical carpetgrass, large crabgrass, bahiagrass, torpedograss, bull paspalum and thin paspalum and dallisgrass in warm-season turfgrass, comprising applying to the warm-season turfgrass or to the locus of the warm-season turfgrass a composition comprising pinoxaden wherein the pinoxaden is present in an amount effective in controlling the weed, and wherein the weed is selectively controlled over the warm-season turfgrass.
2. The method of claim 1 , wherein the warm season turfgrass is selected from the group consisting of bermudagrass, zoysiagrass and St. Augustine.
3. The method of claim 1 , wherein the warm-season turfgrass is zoysiagrass.
4. The method of claim 1 , wherein the composition further comprises adjuvants, solvents, carrier, surfactants or extenders.
5. The method according to claim 1 , wherein the composition comprises from 0.01 to 90% by weight of the pinoxaden, from 10 to 99.99% of a carrier and from 0 to 20% of a surfactant.
6. The method of claim 1 , wherein pinoxaden is applied at the rate of from about 30 grams of pinoxaden per hectare to about 200 grams of pinoxaden per hectare.
7. The method of claim 1 , wherein pinoxaden is applied at the rate of from about 70 grams of pinoxaden per hectare to about 165 grams of pinoxaden per hectare.
8. The method of claim 1 , wherein dallisgrass is controlled.
9. The method of claim 1 , wherein tropical signalgrass is controlled.
10. The method of claim 1 , wherein tropical carpetgrass is controlled.
11. The method of claim 1 , wherein torpedograss is controlled.
12. The method of claim 1 , wherein biahiagrass is controlled.
13. The method of claim 7 , wherein pinoxaden is applied between about two and 10 times, at intervals of from 14 to 60 days during the turf growing season.
14. The method of claim 7 , wherein pinoxaden is applied between about two and 5 times, at intervals of from 28 to 42 days during the turf growing season.
15. The method of claim 7 , wherein pinoxaden is applied between about two and 21 times, at intervals of from 7 to 21 days during the turf growing season.
16. The method of claim 7 , wherein pinoxaden is applied between about two and 12 times, at intervals of from 10 to 18 days during the turf growing season.
17. The method of claim 1 , wherein cloquintocet-mexyl is applied simultaneously or sequentially with pinoxaden to the warm season turf grass.
18. The method according to claim 1 , wherein the method further comprises applying an additional herbicide to the warm-season turfgrass or to the locus of the warm-season turfgrass.
19. The method of claim 17 , wherein the ratio of cloquintocet-mexyl to pinoxaden is 1:4 by weight.
20. The method of claim 1 , wherein applying is done as granular application.