Synergistic fungicidal mixtures for fungal control in cereals
A fungicidal composition containing a fungicidally effective amount of (a) the compound of Formula I, (3S,6S,7R,8R)-8-benzyl-3-(3-((isobutyryloxy)methoxy)-4-methoxypicolinamido)-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl isobutyrate, and (b) fluxapyroxad, provides synergistic control of selected fungi.
1. A synergistic fungicidal mixture comprising a fungicidally effective amount of a compound of Formula I and fluxapyroxad, wherein the weight ratio of the compound of Formula I to fluxapyroxad is from about 1:1 to about 16:1, and wherein the mixture exhibits synergistic fungicidal activity between the compound of Formula I and fluxapyroxad
2. The mixture of claim 1 , wherein the ratio of the compound of Formula I to fluxapyroxad is about 1 to about 1.
3. The mixture of claim 1 , wherein the ratio of the compound of Formula I to fluxapyroxad is about 2 to about 1.
4. The mixture of claim 1 , wherein the ratio of the compound of Formula I to fluxapyroxad is about 3 to about 1.
5. The mixture of claim 1 , wherein the ratio of the compound of Formula I to fluxapyroxad is about 4 to about 1.
6. The mixture of claim 1 , wherein the ratio of the compound of Formula I to fluxapyroxad is about 8 to about 1.
7. The mixture of claim 1 , wherein the ratio of the compound of Formula I to fluxapyroxad is about 16 to about 1.
8. A fungicidal composition comprising a fungicidally effective amount of the fungicidal mixture of claim 1 and an agriculturally acceptable adjuvant or carrier.
9. A method of treating a plant, comprising the step of:
applying a fungicidally effective amount of a mixture that includes a compound of Formula I and fluxapyroxad, wherein the weight ratio of the compound of Formula I to fluxapyroxad is from about 1:1 to about 16:1 and wherein the mixture exhibits synergistic fungicidal activity between the compound of Formula I and fluxapyroxad, to a surface selected from at least one surface selected from the group of surfaces consisting of: at least one portion of a plant, soil adjacent to a plant, soil in contact with a plant, seeds, and equipment used in contact with a plant or a surface adjacent to a plant
10. The method according to claim 9 , wherein the fungicidally effective amount of the mixture is applied in the range of about 30 g/ha to about 200 g/ha of fluxapyroxad and about 35 g/ha to about 300 g/ha of the compound of Formula I.
11. The mixture of claim 1 , wherein the mixture provides an observed level of fungicidal activity that is at least four times greater than the fungicidal activity expected from the individual fungicidal activity of the compound of Formula I and fluxapyroxad by the Colby equation.
12. The mixture of claim 1 , wherein the ratio of the compound of Formula I to fluxapyroxad is from about 1:1 to about 8:1.
13. The mixture of claim 1 , wherein the ratio of the compound of Formula I to fluxapyroxad is from about 1:1 to about 4:1.
14. The mixture of claim 1 , wherein the ratio of the compound of Formula I to fluxapyroxad is from about 1:1 to about 2:1.