SYNERGISTIC COMPOSITION CONTAINING HERBICIDE, ORGANIC ACID AND SURFACTANT

Abstract

The present invention relates to new, highly efficient synergistic compositions comprising mixtures of organic acids in combination with specific detergents or emulgators. That is, applied as an adjuvant or additive, said mixtures significantly increase the efficacy and biocompatibility of conventional herbicide products. The new synergistic composition thereby allows significant reduction of active ingredients of conventional herbicide agents. The higher efficacy of the synergistic mixture also allows to address the elimination of herbicide-resistant or herbicide-tolerant plants.

Claims

1. Herbicide composition comprising: at least one herbicide agent, and a mixture comprising: a) at least one type of organic acid, b) at least one type of detergent, wherein the mixture enhances at least one activity of the herbicide agent.

2. The herbicide composition according to claim 1, wherein the herbicide agent is selected from the group consisting of N-(phosphonomethyl) glycine, 2, 4-dichlorophenoxyacetic acid, 2-methyl-4-chlorophenoxyacetic acid, methylchlorophenoxypropionic acid, 3, 6-dichloro-2-methoxybenzoic acid, N, N-dimethyl-4, 4-bipyridinium dichloride, DL-phosphinothricin, N-phenylphthalimide, cyclohexanedione, 6-Chlor-N-ethyl-N-isopropyl-1, 3, 5-triazin-2, 4-diamin, and S-[(4-chlorophenyl) methyl] diethylcarbamothioate.

3. The herbicide composition according to claim 1, wherein the concentration of the herbicide agent is in the range from 0.1% to 1% (weight) in relation to the total weight of the composition.

4. The herbicide composition according to claim 1, wherein the detergent is included in concentrations from 0.05% to 1% (weight) in relation to the total weight of the composition.

5. The herbicide composition according to claim 1, wherein the detergent is at least one compound selected from the group consisting of anionic, amphoteric tensides, cationic tensides and suitable mixtures thereof.

6. The herbicide composition according to claim 1, wherein the organic acid is included in concentrations from 0.05% to 1% (weight) in relation to the total volume of the composition.

7. The herbicide composition according to claim 1, wherein the organic acid is a carboxylic acid.

8. The herbicide composition according to claim 7, wherein the organic acid is selected from the group consisting of citric acid, valeric acid, itaconic acid, acetic add, citriconic acid, lactic acid, malic acid, succinic acid, aldaric acid, malonic acid, proprionic acid, maleic acid, salicylic acid, glutaric acid, tartaric acids, and benzoic acid.

9. The herbicide composition according to claim 1, wherein the detergent and the organic acid are included at a ratio of approximately 1:1 (w/w).

10. The herbicide composition according to claim 1, wherein the herbicide agent, the organic acid and the detergent are included at a ratio of approximately 1:1:1 (w/w/w).

11. Herbicide composition according to claim 1, further comprising at least one additive, adjuvant, sticking or wetting agent and/or buffer substance.

12. Method for treatment of soil and/or a surface of a plant, comprising: a) applying the herbicide composition according to claim 1 to the soil and/or the surface of said plant.

13. Method for enhancing at least one activity of at least one herbicide agent comprising: providing at least one type of organic acid, at least one detergent, the at least one herbicide agent, wherein the at least one type of organic acid and the at least one detergent enhances the at least one activity of the at least one herbicide agent when combined.

14. Method for producing a herbicide composition, comprising adding a mixture to at least one herbicide agent, wherein said mixture comprises at least one detergent and at least one organic acid.

15. Method according to claim 13, wherein the herbicide agent is selected from the group consisting of N-(phosphonomethyl)glycine, 2,4-dichlorophenoxyacetic acid, 2-methyl-4-chlorophenoxyacetic acid, methylchlorophenoxypropionic acid, 3, 6-dichloro-2-methoxybenzoic acid, N, N-dimethyl-4, 4-bipyridinium dichloride, DL-phosphinothricin, N-phenylphthalimide, cyclohexanedione, 6-Chlor-N-ethyl-N-isopropyl-1, 3, 5-triazin-2, 4-diamin, and S-[(4-chlorophenyl) methyl] diethylcarbamothioate.

16. The herbicide composition according to claim 3, wherein the concentration of the herbicide agent is in the range from 0.25% to 0.5% (weight) in relation to the total weight of the composition.

17. The herbicide composition according to claim 4, wherein the detergent is included in concentrations from 0.1% to 0.25% (weight), in relation to the total weight of the composition.

18. The herbicide composition according to claim 6, wherein the organic acid is included in concentrations from 0.1% to 0.25% (weight) in relation to the total volume of the composition.

19. The herbicide composition according to claim 2, wherein the concentration of the herbicide agent is in the range from 0.1% to 1% (weight) in relation to the total weight of the composition, the detergent is included in concentrations from 0.05% to 1% (weight) in relation to the total weight of the composition, and the organic acid is included in concentrations from 0.05% to 1% (weight) in relation to the total volume of the composition.

20. The herbicide composition according to claim 19, wherein the detergent and the organic acid are included at a ratio of approximately 1:1 (w/w).

Description

EXAMPLES

[0062] Table 2 shows selected mixtures (M1-M6) and concentrations of ingredients that applied as additives or adjuvant for herbicides in the different tests resulted in synergistic enhancement of the herbicide activities of the tested conventional herbicide agents glyphosate and 2,4-D. The preferred ratio of organic acid and detergent was 1:1 (w/w) and the preferred concentration with a general good enhancement of herbicide activity was 0.1% to 0.25%. At a concentration of 0.1% to 0.25% glyphosate or 2,4-D alone did not show any significant damage of plant leaves.

[0063] Table 3 shows an example of the leaf disc bioassay with 5 mm discs cut from leaves of Sesamum indicum. Glyphosate alone or the mixture M2 alone do not show efficient damage of the leaf discs under these conditions. A clear synergistic effect is observed for the combination of glyphosate and the mixture M2 with a faster action of the herbicide at also lower concentrations up to 0.1%.

[0064] Table 4 shows an example of the leaf disc bioassay with 5 mm discs cut from leaves of the common lawn weed Plantiago major. 2,4-D alone or the mixture M4 alone do not show efficient damage of the leaf discs under these conditions. A clear synergistic effect is observed for the combination of 2,4-D and the mixture M4 with a faster action of the herbicide at also lower concentrations of up to 0.1%.

[0065] Table 5 shows an example of growth chamber trials with seedlings from Sesamum indicum. Glyphosate alone or the mixture M2 alone do not show efficient damage of the seedlings under these conditions. A clear synergistic effect is observed for the combination of glyphosate and the mixture M2 with a faster action of the herbicide.

[0066] Table 6 shows an example of field trials on defined plots. Glyphosate at 0.25% or the synergistic mixture M2 with a 1:1 mixture of citric acid and SOS alone do not show efficient elimination of weed plants. A combination of 0.25% glyphosate with 0.5% of mixture M2 results in a clear synergistic effect by faster elimination of all major weed species in the plots like Avena sterilis, Brachystachys, Malva spec., Phalaris, Raphanus equistiforme and Trifolium micranthum.

[0067] Table 7 shows an example of field trials on defined plots. Glyphosate at 0.25% or the synergistic mixture M2 with a 1:1 mixture of citric acid and SOS alone do not show efficient elimination of weed plants. A combination of 0.25% glyphosate with 0.25% of mixture M2 results in a clear synergistic effect by faster elimination of all major weed species in the plots like Avena sterilis, Brachystachys, Malva spec., Phalaris, Raphanus equistiforme and Trifolium micranthum.

REFERENCES

[0068] [1] V. K. Nandula, K. N. Reddy, S. O. Duke, D. H. Poston (2005) Glyphosate-Resistant Weeds: Current Status and Future Outlook. Outlook on Pest Management, 183-187. [0069] [2] N. D. Teaster, R. E. Hoagland (2013) Varying Tolerance to Glyphosate in a Population of Palmer Amaranth with Low EPSPS Gene Copy Number. American Journal of Plant Sciences, Vol. 4, 2400-2408. [0070] http://dx.doi.org/10.4236/ajps.2013.412297 [0071] [3] A. Samsel, S. Seneff (2013) Glyphosate, pathways to modern diseases II: Celiac sprue and gluten intolerance. Interdiscip Toxicol. Vol. 6(4): 159-184. [0072] [4] R. E. Hoagland, R. H. Jordan and N. D. Teaster (2013) Bioassay and Characterization of Several Palmer Amaranth (Amaranthus palmeri) Biotypes with Varying Tolerances to Glyphosate. American Journal of Plant Sciences, Vol. 4, No. 5, 1029-1037. [0073] http://dx.doi.org/10.4236/ajps.2013.45127