Synergistic herbicidal composition containing fluroxypyr and penoxsulam, halosulfuron-methyl, imazamox or imazethapyr

1. A synergistic herbicidal mixture comprising herbicidally effective amount of (a) fluroxypyr, the acid itself, or an agriculturally acceptable salt or ester thereof, and (b) penoxsulam, wherein the weight ratio of fluroxypyr to penoxsulam in the mixture is 2.8:1 to 22.7:1.

2. An herbicidal composition comprising an herbicidally effective amount of the herbicidal mixture of claim 1 and an agriculturally acceptable adjuvant and/or carrier.

3. A method of controlling undesirable vegetation which comprises contacting the vegetation or the locus thereof with or applying to the soil or water to prevent the emergence or growth of vegetation an herbicidally effective amount the herbicidal mixture of claim 1 .

4. A method of controlling undesirable vegetation in rice, cereal and grain crops, pastures, rangelands, industrial vegetation management and turf which comprises contacting the vegetation or the locus thereof with or applying to the soil or water to prevent the emergence or growth of vegetation an herbicidally effective amount the herbicidal mixture of claim 1 .

5. The mixture of claim 1 , wherein the weight ratio of fluroxypyr to penoxsulam in the mixture is 22.7:1.

6. The mixture of claim 1 , wherein the weight ratio of fluroxypyr to penoxsulam in the mixture is 13.3:1.

7. The mixture of claim 1 , wherein the weight ratio of fluroxypyr to penoxsulam in the mixture is 9.3:1.

8. The mixture of claim 1 , wherein the weight ratio of fluroxypyr to penoxsulam in the mixture is 8.3:1.

9. The mixture of claim 1 , wherein the weight ratio of fluroxypyr to penoxsulam in the mixture is about 7:1.

10. The mixture of claim 1 , wherein the weight ratio of fluroxypyr to penoxsulam in the mixture is about 4.4:1.

11. The mixture of claim 1 , wherein the weight ratio of fluroxypyr to penoxsulam in the mixture is 2.8:1.

12. The method of claim 3 , wherein the undesirable vegetation is selected from the group consisting of Helianthus annuus, Eremochloa ophiuroides, Echinochola crus - galli, Plantago lanceolata, Caperonia palustris, Sebex exaltata and Scirpus juncoides.

13. The method of claim 3 , wherein the method is for controlling undesirable vegetation in rice.

14. The method of claim 4 , wherein the undesirable vegetation is selected from the group consisting of Helianthus annuus, Eremochloa ophiuroides, Echinochola crus - galli, Plantago lanceolata, Caperonia palustris, Sebex exaltata and Scirpus juncoides.

15. The method of claim 4 , wherein the method is for controlling undesirable vegetation in rice.

16. A method for safening centipedegrass and sunflower from the individual harmful effects of penoxsulam and fluroxypyr which comprises contacting centipedegrass or sunflower with, or applying to the area under cultivation, a synergistic mixture of penoxsulam and fluroxypyr, wherein the weight ratio of fluroxypyr to penoxsulam in the mixture is 2.8:1 to 22.7:1.

17. A method of controlling undesirable vegetation which comprises contacting the vegetation or the locus thereof with or applying to the soil or water to prevent the emergence or growth of vegetation a herbicidally effective amount of (a) fluroxypyr, or an agriculturally acceptable salt or ester thereof; and (b) penoxsulam, or an agriculturally acceptable salt or ester thereof, wherein the weight ratio of fluroxypyr to penoxsulam is 2.8:1 to 22.7:1.

18. The method of claim 17 , wherein the undesirable vegetation is selected from the group consisting of Helianthus annuus, Eremochloa ophiuroides, Echinochola crus - galli, Plantago lanceolata, Caperonia palustris, Sebex exaltata and Scirpus juncoides.

19. The method of claim 17 , wherein the method is for controlling undesirable vegetation in rice.