Active compound combinations comprising carboxamide derivatives

Abstract

The present invention relates to active compound combinations, in particular within a composition, which comprises (A) a N-cyclopropyl-N-[substituted-benzyl]-3-(difluoromethyl)-5-fluoro-1-methyl-1H-pyrazole-4-carboxamide or thiocarboxamide derivative of formula (I) and (B) a further herbicidally active compound or (C) a plant growth regulator and/or (D) a safener for reducing phytotoxic actions of agrochemicals. Moreover, the invention relates to a method for curatively or preventively controlling the phytopathogenic fungi of plants or crops, to the use of a combination according to the invention for the treatment of seed, to a method for protecting a seed and not at least to the treated seed.

Claims

1. A composition comprising a fungicidally synergistically effective amount of (A) at least one compound of formula (I) ##STR00002## wherein T is an oxygen and X is selected from the list of 5-chloro-2-ethyl, 5-chloro-2-isopropyl, 2-ethyl-5-fluoro, 5-fluoro-2-isopropyl, 2-cyclopropyl-5-fluoro, and 2-fluoro-6-isopropyl, or an agrochemically acceptable salt thereof, and (B) at least one further herbicidally active compound selected from the group consisting of glyphosate, glyphosate-sodium, glyphosate-isopropylammonium, bilanafos, glufosinate, and glufosinate-ammonium, or (D) isoxadifen-ethyl for reducing phytotoxic actions of agrochemicals.

2. The composition according to claim 1, wherein the compound of the formula (I) is N-(5-chloro-2-isopropylbenzyl)-N-cyclopropyl-3-(difluoromethyl)-5-fluoro-1-methyl-1H-pyrazole-4-carboxamide (compound A5).

3. The composition according to claim 1, further comprising an auxiliary, solvent, carrier, surfactant or extender.

4. A method for controlling phytopathogenic fungi in crop protection, comprising applying the composition according to claim 3 to seed, a plant, to fruits of plants or to soil on which the plant grows or is supposed to grow.

5. The method according to claim 4, comprising treating the plant, the fruits of plants or the soil on which the plant grows or is intended to grow.

6. The method according to claim 4, comprising treating leaves with from 0.1 to 10,000 g/ha or seed with from 2 to 200 g per 100 kg of seed.

7. Seed treated with the composition of claim 3.

8. The composition according to claim 1 further comprising at least one safener.

9. A method for controlling phytopathogenic fungi in crop protection, wherein the composition according to claim 1 is applied to seed, a plant, to fruits of plants or to soil on which the plant grows or is supposed to grow.

10. The method according to claim 9, comprising treating the plant, the fruits of plants or the soil on which the plant grows or is intended to grow.

11. The method according to claim 9, comprising treating leaves with from 0.1 to 10,000 g/ha or seed with from 2 to 200 g per 100 kg of seed.

12. Seed treated with the composition according to claim 1.

Description

EXAMPLE A: BLUMERIA TEST (BARLEY)/PREVENTIVE

(1) Solvent: 49 parts by weight of N,N-dimethylacetamide Emulsifier: 1 part by weight of alkylaryl polyglycol ether

(2) To produce a suitable preparation of active compound, 1 part by weight of active compound or active compound combination is mixed with the stated amounts of solvent and emulsifier, and the concentrate is diluted with water to the desired concentration.

(3) To test for preventive activity, young plants are sprayed with the preparation of active compound or active compound combination at the stated rate of application.

(4) After the spray coating has been dried, the plants are dusted with spores of Blumeria graminis f.sp. hordei.

(5) The plants are placed in the greenhouse at a temperature of approximately 18° C. and a relative atmospheric humidity of approximately 80% to promote the development of mildew pustules.

(6) The test is evaluated 7 days after the inoculation. 0% means an efficacy which corresponds to that of the untreated control, while an efficacy of 100% means that no disease is observed.

(7) The table below clearly shows that the observed activity of the active compound combination according to the invention is greater than the calculated activity, i.e. a synergistic effect is present.

(8) Blumeria Test (Barley)/Preventive

(9) TABLE-US-00002 Application rate of active compound in Efficacy in % Active compounds ppm a.i. found* calc.** (A5) N-(5-chloro-2-isopropylbenzyl)- 62.5 56 N-cyclopropyl-3-(difluoromethyl)-5- fluoro-1-methyl-1H-pyrazole-4- carboxamide (B-14.1) glyphosate 5 11 (B-13.3) glufosinate-ammonium 5 0 (A5) + (B-14.1) 12.5:1 62.5 + 5 89 61 (A5) + (B-13.3) 12.5:1 62.5 + 5 94 56 *found = activity found **calc. = activity calculated using Coby's formula

EXAMPLE B: LEPTOSPHAERIA NODORUM TEST (WHEAT)/PREVENTIVE

(10) Solvent: 49 parts by weight of N,N-dimethylacetamide Emulsifier: 1 part by weight of alkylaryl polyglycol ether

(11) To produce a suitable preparation of active compound, 1 part by weight of active compound or active compound combination is mixed with the stated amounts of solvent and emulsifier, and the concentrate is diluted with water to the desired concentration.

(12) To test for preventive activity, young plants are sprayed with the preparation of active compound or active compound combination at the stated rate of application.

(13) After the spray coating has been dried, the plants are sprayed with a spore suspension of Leptosphaeria nodorum. The plants remain for 48 hours in an incubation cabinet at approximately 20° C. and a relative atmospheric humidity of approximately 100%.

(14) The plants are placed in the greenhouse at a temperature of approximately 22° C. and a relative atmospheric humidity of approximately 80%.

(15) The test is evaluated 8 days after the inoculation. 0% means an efficacy which corresponds to that of the untreated control, while an efficacy of 100% means that no disease is observed.

(16) The table below clearly shows that the observed activity of the active compound combination according to the invention is greater than the calculated activity, i.e. a synergistic effect is present.

(17) Leptosphaeria nodorum Test (Wheat)/Preventive

(18) TABLE-US-00003 Application rate of active compound in Efficacy in % Active compounds ppm a.i. found* calc.** (A5) N-(5-chloro-2-isopropylbenzyl)- 31 50 N-cyclopropyl-3-(difluoromethyl)-5- fluoro-1-methyl-1H-pyrazole-4- carboxamide (D-23) mefenpyr-diethyl 25 17 (D-19) isoxadifen-ethylen 25 17 (D-62) cyprosulfamide 25 0 (A5) + (D-23) 1.24:1 31 + 25 67 59 (A5) + (D-19) 1.24:1 31 + 25 83 59 (A5) + (D-62) 1.24:1 31 + 25 83 50 *found = activity found **calc. = activity calculated using Colby's formula