METHOD TO CONTROL A PHYTHOPATOGENIC FUNGI SELECTED FROM UNCINULA NECATOR, PLASMOPARA VITICOLA AND GLOEOSPORIUM AMPELOPHAGUM IN GRAPES BY COMPOSITIONS COMPRISING MEFENTRIFLUCONAZOLE

Abstract

The present invention relates to a method for controlling a phythopatogenic fungi selected from Uncinula necator, Plasmopara viticola and Gloeosporium ampelophagum in grapes, comprising treating the plants, their seed or the soil with a fungicidally effective amount of a composition comprising mefentrifluconazole (I) and a further active compound (II) selected from bixafen, boscalid, dimoxystrobin, fenpropimorph, fluopyram, fluxapyroxad, kresoxym-methyl, metyltetraprole, oxathiapiprolin, quinofumelin, picarbutrazox, pydiflumetofen, pyraclostrobin, 1-(4,5-dimethylbenzimidazol-1-yl)-4,4,6-trifluoro-3,3-dimethyl-isoquinoline, 6-chloro-1-(4,5-dimethylbenzimidazol-1-yl)-4,4-difluoro-3,3-dimethyl-isoquinoline, 1-(4,5-dimethylbenzimidazol-yl)-4,4-difluoro-3,3-dimethyl-isoquinoline, 4,4-difluoro-3,3-dimethyl-1-(4-methylbenzimidazol-1-yl)isoquinoline, 1-(6-chloro-7-methyl-pyrazolo[1,5-a]pyridin-3-yl)-4,4-difluoro-3,3-dimethyl-1 isoquinoline, 4,4-difluoro-1-(6-fluoro-7-methyl-pyrazolo[1,5-a]pyridin-3-yl)-3,3-dimethyl-isoquinoline, 4,4-difluoro-3,3-dimethyl-1-(6-methylpyrazolo[1,5-a]pyridin-3-yl)isoquinoline, 1-(6,7-dimethylpyrazolo [1,5-a]pyridin-3-yl)-4,4-difluoro-3,3-dimethyl-isoquinoline, 1-(7,8-dimethylimidazo[1,2-a]pyridin-3-yl)-4,4-difluoro-3,3-dimethyl-isoquinoline, 4-[1-[2-[3-(difluoromethyl)-5-methyl-pyrazol-1-yl]acetyl]-4-piperidyl]-N-tetralin-1-yl-pyridine-2-carboxamide, 4-[1-[2-[3,5-bis(difluoromethyl)pyrazol-1-yl]acetyl]-4-piperidyl]-N-tetralin-1-yl-pyridine-2-carboxamide, 4-[1-[2-[3-(difluoromethyl)-5-(trifluoromethyl)pyrazol-1-yl]acetyl]-4-piperidyl]-N-tetralin-1-yl-pyridine-2-carboxamide, 4-[1-[2-[5-cyclopropyl-3-(difluoromethyl)pyrazol-1-yl]acetyl]-4-piperidyl]-N-tetralin-1-yl-pyridine-2-carboxamide, 4-[1-[2-[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]acetyl]-4-piperidyl]-N-tetralin-1-yl-pyridine-2-carboxamide, 4-[1-[2-[5-(difluoromethyl)-3-2 (trifluoromethyl)pyrazol-1-yl]acetyl]-4-piperidyl]-N-tetralin-1-yl-pyridine-2-carboxamide, 4-[1-[2-[3,5-bis(trifluoromethyl)pyrazol-1-yl]acetyl]-4-piperidyl]-N-tetralin-1-yl-pyridine-2-carboxamide and 4-[1-[2-[5-cyclopropyl-3-(trifluoromethyl)pyrazol-1-yl]acetyl]-4-piperidyl]-N-tetralin-1-yl-pyridine-2-carboxamide.

Claims

1. A method for controlling a phythopatogenic fungi selected from Uncinula necator, Plasmopara viticola and Gloeosporium ampelophagum on grapes, comprising treating plants or soil with a fungicidally effective amount of a composition comprising I) mefentrifluconazole or the agriculturally acceptable salts thereof as compound (I), and II) compound (II) which is: II-9) oxathiapiprolin and agriculturally acceptable salts thereof.

2. The method according to claim 1, wherein the composition is applied to the plants.

3. The method according to claim 1, wherein the composition is applied to the soil.

4. The method according to claim 1, wherein the phythopatogenic fungi is Uncinula necator.

5. The method according to claim 1, wherein the phythopatogenic fungi is Plasmopara viticola.

6. The method according to claim 1, wherein the phythopatogenic fungi is Gloeosporium ampelophagum.

7. The method according to claim 1, wherein the composition is applied in an amount from 5 g/ha to 2500 g/ha.

8-11. (canceled)

Description

EXPERIMENTAL PART

[0167] Green House

[0168] Control of Powdery Mildew on Grape Caused by Uncinula necator (UNCINE P7)

[0169] Grape cuttings were grown in pots to the 4 to 5 leaf stage. These plants were sprayed to run-off with a spray solution, containing the concentration of active ingredient or their mixture mentioned in the table below. Seven days later the treated plants were inoculated with spores of Uncinula necator by shaking heavily infested stock plants over the treated pots. After cultivation in the greenhouse for 22 days at 21-23° C. and a relative humidity between 40 to 70% the extent of fungal attack on the leaves was visually assessed as % diseased leaf area.

[0170] Fungicidal Control of Grape Downy Mildew Caused by Plasmopara viticola PLASVI P4)

[0171] Grape cuttings were grown in pots to the 4 to 5 leaf stage. These plants were sprayed to run-off with a spray solution, containing the concentration of active ingredient or their mixture mentioned in the table below. The plants were allowed to air-dry and cultivated in a greenhouse for four days. Then they were inoculated with an aqueous spore suspension of Plasmopara viticola by spraying it at the lower leaf-side. Then the trial plants were immediately transferred for 24 h to a humid chamber with 22-24° C. and a and a saturated relative humidity. For a period of 5 days, cultivation followed in a greenhouse at 20-25° C. and a relative humidity about 50-80%. To stimulate the outbreak of the disease symptoms, the plants were transferred to a humid chamber again for 24 hours. Then the extent of fungal attack on the lower leaf surface was visually assessed as % diseased leaf area.

[0172] The disease ratings were converted into efficacies.

[0173] An efficacy of 0 means that the infection level of the treated plants corresponds to that of the untreated control plants; an efficacy of 100 means that the treated plants were not infected.

[0174] The expected efficacies of active compound mixtures were determined using Colby's formula [R. S. Colby, “Calculating synergistic and antagonistic responses of herbicide combinations”, Weeds 15, 20-22 (1967)] and compared with the observed efficacies.

[0175] UNCINE P7

TABLE-US-00002 Active Application Observed Calculated ingredient rate (g/ha) Mixture efficacy efficacy Synergism Untreated — — 90% disease control I 5 — 72 II-6 0.5 — 52 I + II-6 5 + 0.5 10:1 98 87 11

[0176] PLASVI P4

TABLE-US-00003 Active Application Observed Calculated ingredient rate (g/ha) Mixture efficacy efficacy Synergism Untreated — — 97% disease control I 5 — 1 1 — 2 II-9 0.1 — 18 I + II-9 5 + 0.1 50:1 92 18 74 1 + 0.1 10:1 75 19 56