Control of trifluralin-resistant weeds with dithiopyr
View Patent ↗Methods for controlling the growth of trifluralin-resistant annual ryegrass in cereals using dithiopyr are described. The methods include contacting the locus of the cereal, at planting or before weed emergence, with an herbicidally effective amount of dithiopyr. The dithiopyr can be applied to the soil and either incorporated into the soil at the time of planting the cereal or applied post-planting to the soil surface before the weeds have emerged.
1. A method of controlling the growth of trifluralin-resistant annual ryegrass in cereals, comprising contacting a locus of a cereal in an area that contains or will contain trifluralin-resistant annual ryegrass, at planting or before weed emergence, with a composition comprising a herbicidally effective amount of dithiopyr.
2. The method of claim 1 , wherein the composition is applied to soil and either incorporated into the soil at the time of planting the cereal or applied post-planting to the soil surface before the weeds have emerged.
3. The method of claim 1 , wherein the cereals are wheat, barley, or triticale.
4. The method of claim 1 , wherein the composition is applied to the locus of the cereal in a composition containing 0.0001 weight percent to 1 weight percent dithiopyr.
5. The method of claim 4 , wherein the composition contains 0.001 weight percent to 0.1 weight percent dithiopyr.
6. The method of claim 4 , wherein the composition is created by diluting a concentrate composition containing between 0.001 percent by weight dithiopyr and 98 percent by weight dithiopyr.
7. The method of claim 1 , wherein the composition is applied to a field containing the cereal at a rate of 250 or fewer grams active ingredient per hectare.
8. The method of claim 1 , wherein the composition is applied to a field containing the cereal at a rate of 240 or fewer grams active ingredient per hectare.
9. A method of controlling the growth of trifluralin-resistant annual ryegrass in cereals, comprising applying to an area containing a cereal and containing or will contain the trifluralin-resistant rye grass a composition comprising dithiopyr at a rate of 250 or fewer grams active ingredient per hectare.
10. The method of claim 9 , wherein the composition is applied to the area at planting or before weed emergence.
11. The method of claim 9 , wherein the cereals are wheat, barley, or triticale.
12. The method of claim 9 , wherein the composition is applied to the area at a concentration from 0.0001 weight percent to 1 weight percent dithiopyr.
13. The method of claim 12 , wherein the composition contains 0.001 weight percent to 0.1 weight percent dithiopyr.
14. The method of claim 12 , wherein the composition is created by diluting a concentrate composition containing between 0.001 percent by weight dithiopyr and 98 percent by weight dithiopyr.
15. The method of claim 9 , wherein the composition is applied at a rate of 240 or fewer grams active ingredient per hectare.
16. The method of claim 9 , wherein the composition is applied at a rate of 220 or fewer grams active ingredient per hectare.
17. The method of claim 9 , wherein the composition is applied at a rate of 200 or fewer grams active ingredient per hectare.
18. A method of controlling the growth of trifluralin-resistant annual ryegrass in wheat, barley, or triticale, comprising applying to an area containing the wheat, barley, or triticale and containing or will contain the trifluralin resistant annual ryegrass, at planting or before weed emergence, a composition comprising an herbicidally effective amount of dithiopyr and one or more additional cereal herbicides, wherein the dithiopyr is applied at a rate of 250 or fewer grams active ingredient per hectare.