Synergistic herbicidal compositions containing aminopyralid, 2,4-dichlorophenoxyacetic acid and atrazine
View Patent ↗An herbicidal composition containing (a) aminopyralid and 2,4-D and (b) atrazine provides synergistic control of selected weeds in corn, sorghum, sugar cane and range and pasture.
1. A synergistic herbicidal mixture comprising an herbicidally effective amount of (a) aminopyralid and 2,4-D and (b) atrazine.
2. The mixture of claim 1 in which the weight ratio of aminopyralid to 2,4-D is between about 1:15 and about 1:25 on an acid equivalent basis and the weight ratio of aminopyralid (acid equivalent) to atrazine (active ingredient) is between about 1:25 and about 1:100.
3. The mixture of claim 2 in which weight ratio of aminopyralid to 2,4-D is about 1:20 on an acid equivalent basis and the rate of aminopyralid and 2,4-D applied is from about 141 to about 378 g ae/ha and the rate of atrazine applied is from about 400 to 1000 g ai/ha.
4. The mixture of claim 2 in which weight ratio of aminopyralid to 2,4-D is about 1:20 on an acid equivalent basis and the rate of aminopyralid and 2,4-D applied is about 283.5 g ae/ha and the rate of atrazine applied is from about 450 to 900 g ai/ha.
5. An herbicidal composition comprising an herbicidally effective amount of the herbicidal mixture of claim 1 and an agriculturally acceptable adjuvant or carrier.
6. A method of controlling undesirable vegetation which comprises contacting the vegetation or the locus thereof with an herbicidally effective amount of the herbicidal mixture of claim 1 .
7. A method of controlling undesirable vegetation in corn which comprises contacting the vegetation or the locus thereof with an herbicidally effective amount of the herbicidal mixture of claim 1 .
8. The herbicidal composition of claim 5 in which the weight ratio of aminopyralid to 2,4-D is between about 1:15 and about 1:25 on an acid equivalent basis and the weight ratio of aminopyralid (acid equivalent) to atrazine (active ingredient) is between about 1:25 and about 1:100.
9. The herbicidal composition of claim 8 in which the weight ratio of aminopyralid to 2,4-D is about 1:20 on an acid equivalent basis and the rate of aminopyralid and 2,4-D applied is from about 141 to about 378 g ae/ha and the rate of atrazine applied is from about 400 to 1000 g ai/ha.
10. The herbicidal composition of claim 8 in which the weight ratio of aminopyralid to 2,4-D is about 1:20 on an acid equivalent basis and the rate of aminopyralid and 2,4-D applied is about 283.5 g ae/ha and the rate of atrazine applied is from about 450 to 900 g ai/ha.
11. The method of claim 6 in which the weight ratio of aminopyralid to 2,4-D is between about 1:15 and about 1:25 on an acid equivalent basis and the weight ratio of aminopyralid (acid equivalent) to atrazine (active ingredient) is between about 1:25 and about 1:100.
12. The method of claim 11 in which the weight ratio of aminopyralid to 2,4-D is about 1:20 on an acid equivalent basis and the rate of aminopyralid and 2,4-D applied is from about 141 to about 378 g ae/ha and the rate of atrazine applied is from about 400 to 1000 g ai/ha.
13. The method of claim 11 in which the weight ratio of aminopyralid to 2,4-D is about 1:20 on an acid equivalent basis and the rate of aminopyralid and 2,4-D applied is about 283.5 g ae/ha and the rate of atrazine applied is from about 450 to 900 g ai/ha.
14. The method of claim 7 in which the weight ratio of aminopyralid to 2,4-D is between about 1:15 and about 1:25 on an acid equivalent basis and the weight ratio of aminopyralid (acid equivalent) to atrazine (active ingredient) is between about 1:25 and about 1:100.
15. The method of claim 14 in which the weight ratio of aminopyralid to 2,4-D is about 1:20 on an acid equivalent basis and the rate of aminopyralid and 2,4-D applied is from about 141 to about 378 g ae/ha and the rate of atrazine applied is from about 400 to 1000 g ai/ha.
16. The method of claim 14 in which the weight ratio of aminopyralid to 2,4-D is about 1:20 on an acid equivalent basis and the rate of aminopyralid and 2,4-D applied is about 283.5 g ae/ha and the rate of atrazine applied is from about 450 to 900 g ai/ha.