Herbicidal composition comprising cinmethylin and dimethenamid

1. A herbicidal composition comprising a herbicidally effective amount of (a) (±)-2-exo-(2-Methylbenzyloxy)-1-methyl-4-isopropyl-7-oxabicyclo[2.2.1]heptane, any of its individual enantiomers or any non-racemic mixture thereof (herbicide A) and (b) dimethenamid or dimethenamid-P (herbicide B), wherein the weight ratio of herbicide A to herbicide B is from 1:0.5 to 1:15.

2. The composition claim 1 wherein the herbicide A is (±)-2-exo-(2-Methylbenzyloxy)-1-methyl-4-isopropyl-7-oxabicyclo[2.2.1]heptane.

3. The composition of claim 1 , wherein the herbicide B is dimethenamid-P.

4. The composition of claim 1 , wherein the herbicide A and herbicide B are each present in an amount sufficient to provide a synergistic herbicidal effect.

5. The composition of claim 1 , wherein the weight ratio of herbicide A to herbicide B is from 1:0.6 to 1:4.

6. The composition of claim 1 , wherein the herbicide A and the herbicide B are the only active ingredients.

7. The composition of claim 1 , further comprising at least one safener D selected from the group consisting of benoxacor (D.1), cloquintocet (D.2), cyometrinil (D.3), cyprosulfamide (D.4), dichlormid (D.5), dicyclonon (D.6), dietholate (D.7), fenchlorazole (D.8), fenclorim (D.9), flurazole (D.10), fluxofenim (D.11), furilazole (D.12), isoxadifen (D.13), mefenpyr (D.14), mephenate (D.15), naphthaleneacetic acid (D.16), naphthalic anhydride (D.17), oxabetrinil (D.18), 4-(dichloroacetyl)-1-oxa-4-azaspiro[4.5]decane (MON4660, CAS 71526-07-3) (D.19), 2,2,5-trimethyl-3-(dichloroacetyl)-1,3-oxazolidine (R-29148, CAS 52836-31-4) (D.20), N-(2-Methoxybenzoyl)-4-[(methylaminocarbonyl)amino]benzenesulfonamide (CAS 129531-12-0) (D.21), and agriculturally acceptable salts, esters or amides thereof.

8. The composition of claim 1 , further comprising one or more auxiliaries customary in crop protection.

9. A method for controlling undesirable vegetation which comprises applying to the vegetation or the locus thereof or applying to the soil or water to control the emergence or growth of the undesirable vegetation the composition of claim 1 .

10. The method of claim 9 , wherein the undesirable vegetation is controlled in crop plants selected from wheat, barley, rye, triticale, oat, corn (maize), sunflower, rice, soybeans, peas, Vicia -beans, Phaseolus -beans, peanuts, oilseed rape, canola, cotton, potato, sugarbeet, sugarcane, turfgrasses and vegetables.

11. The method of claim 9 , wherein the undesirable vegetation is selected from the genera Agropyron, Alopecurus, Apera, Avena, Brachiaria, Bromus, Cynodon, Digitaria, Echinochloa, Eleusine, Ischaemum, Leptochloa, Lolium, Panicum, Phalaris, Poa, Rottboellia, Setaria, Sorghum, Abutilon, Anthemis, Amaranthus, Ambrosia, Brassica, Capsella, Centaurea, Chenopodium, Conyza, Descurainia, Galium, Geranium, Helianthus, Kochia, Matricaria, Papaver, Polygonum, Raphanus, Sinapis, Sisymbrium, Stellaria and Thlaspi.

12. The method of claim 9 , wherein the undesirable vegetation is selected from the genera Alopecurus, Avena, Sorghum, Abutilon, Ambrosia, Anthemis, Brassica, Galium, Helianthus, Sisymbrium, Geranium, Thlaspi and Polygonum.

13. The method of claim 9 , wherein the undesirable vegetation is a herbicide resistant or tolerant weed species.

14. The method of claim 9 , wherein the herbicide A is (±)-2-exo-(2-Methylbenzyloxy)-1-methyl-4-isopropyl-7-oxabicyclo[2.2.1]heptane.

15. The method of claim 9 , wherein the herbicide B is dimethenamid-P.

16. The method of claim 9 , wherein the herbicide A and herbicide B are each present in an amount sufficient to provide a synergistic herbicidal effect.

17. The method of claim 9 , wherein the weight ratio of herbicide A to herbicide B is from 1:0.6 to 1:4.

18. The method of claim 9 , wherein the herbicide A and the herbicide B are the only active ingredients.