USE OF COMPOSITIONS WITH ETHOFUMESATE AND BIXLOZONE IN WHEAT CROPS

Abstract

The present invention primarily relates to the use of compositions with (i) ethofumesate according to formula (I), (ii) a safener, and (iii) bixlozone according to formula (III) or salts thereof, in the protection of wheat crop plants. The present invention also relates to the use of said compositions in the field of agriculture and for controlling harmful plants. The present invention further relates to corresponding methods.

Claims

1. Use of a composition comprising (i) ethofumesate of formula (I) ##STR00011## and (ii) one or more safeners, and (iii) 2-[(2,4-dichlorophenyl)methyl]-4,4-dimethyl-isoxazolidin-3-one of formula (III) or salts thereof ##STR00012## for protection of wheat crop plants characterized in that constituents (i) and (ii), and (iii), are the only agrochemically active compounds present in said composition.

2. Use of a composition according to claim 1 characterized in that constituent (ii) comprises or consists of mefenpyr-diethyl or cloquintocet-mexyl.

3. Use of a composition according to claim 1 characterized in that the ratio by weight of the total amount by weight of constituent (i) to the total amount by weight of constituent (ii) is in the range of from 3:1 to 1:1, based on the total amount by weight of the composition.

4. Use of a composition according to claim 1 characterized in that the ratio by weight of the total amount by weight of constituent (iii) to the total amount by weight of constituent (ii) is in the range of from 3:1 to 1:1, based on the total amount by weight of the composition, and/or the ratio by weight of the total amount by weight of constituent (i) to the total amount by weight of constituent (iii) is in the range of from 3:1 to 1:3, based on the total amount by weight of the composition.

5. Use of a composition according to claim 1 additionally comprising one or more further components selected from the group consisting of formulation auxiliaries and additives customary in crop protection.

6. Use of a composition according to claim 1 characterized in that said composition is applied such that the amount of constituent (i) is in the range of from 100 g/ha to 300 g/ha, and/or the amount of constituent (iii) is in the range of from 100 g/ha to 300 g/ha, and/or the amount of constituent (ii) is in the range of from 50 g/ha to 300 g/ha.

7. Use of a composition according to claim 1 characterized in that said composition is applied such that the amount of constituent (i) is in the range of from 100 g/ha to 250 g/ha, and/or the amount of constituent (iii) is in the range of from 150 g/ha to 250 g/ha, and/or the amount of constituent (ii) is in the range of from 50 g/ha to 150 g/ha.

8. Use of a composition according to claim 1 characterized in that said composition is applied to the wheat crop plants post emergence.

9. Use of a composition according to claim 1 characterized in that said composition is applied to the wheat crop plants post emergence before BBCH growth stage 13 of the wheat crop plants.

10. Method for controlling undesired vegetation in wheat crop plants characterized in that a composition as defined in claim 1 is applied to the undesired vegetation or to the area on which the wheat crop plants are growing or will be growing.

11. Method according to claim 10 characterized in that the composition is applied to the wheat crop plants post emergence.

12. Method according to claim 10 characterized in that a composition as defined in claim 1 is applied to the wheat crop plants post emergence before BBCH growth stage 13 of the wheat crop plants.

13. Method according to claim 10 characterized in that a composition as defined in claim 1 is applied to the wheat crop plants such that the amount of constituent (i) is in the range of from 100 g/ha to 300 g/ha, and/or the amount of constituent (iii) is in the range of from 100 g/ha to 300 g/ha, and/or the amount of constituent (ii) is in the range of from 50 g/ha to 300 g/ha.

14. Use according to claim 1 characterized in that the wheat crop plants are selected from the group consisting of Triticum durum and Triticum aestivum.

15. Use of mefenpyr-diethyl or cloquintocet-mexyl as safener for ethofumesate and bixlozone in wheat crops.

16. Method according to claim 10 characterized in that the wheat crop plants are selected from the group consisting of Triticum durum and Triticum aestivum.

Description

EXAMPLES

[0224] In field trials the interaction of (i) ethofumesate, (ii) the safener mefenpyr-diethyl and (iii) bixlozone concerning wheat crop injury was investigated.

[0225] Plots of five different varieties of winter wheat (Triticum aestivum) crops in the field were sprayed with an application volume of 100 L/ha to 300 L/ha with a hand held spray boom.

[0226] Application of the application spray compostions was carried out early in each case post-emergence at BBCH growth stage 10 (first leaf through coleoptile), BBCH growth stage 11 (first leaf unfolded) or BBCH growth stage 12 (two leafs unfolded) of the respective wheat crop plants.

[0227] The crop damage was in each case visually rated on a percentage scale in relation to the untreated control (100%=all plants dead, complete crop kill; 50%=green plant biomass reduced by 50%, and 0%=like control plot, no crop injury).

[0228] The main symptoms of wheat crop damage observed were bleaching, thinning and stunting.

TABLE-US-00003 Results for wheat at BBCH growth stage 10 - wheat crop damage in % Dose rate Wheat crop damage in g/ha Variety LINUS Ethofumesate + 250 + 10% Bixlozone 200 Ethofumesate + 250 + 0% Bixlozone + 200 + Mefenpyr-diethyl 100

TABLE-US-00004 Results for wheat at BBCH growth stage 11 - wheat crop damage in % Dose rate Wheat crop damage Wheat crop damage in g/ha Variety PONTICUS Variety TIREX Ethofumesate + 250 + 4% 15% Bixlozone 200 Ethofumesate + 250 + 3% 13% Bixlozone + 200 + Mefenpyr-diethyl 100

TABLE-US-00005 Results for wheat at BBCH growth stage 12 - wheat crop damage in % Wheat crop damage Dose rate Wheat crop damage Variety in g/ha Variety SYLLON CHEVIGNON Ethofumesate + 250 + 2% 8% Bixlozone 200 Ethofumesate + 250 + 0% 6% Bixlozone + 200 + Mefenpyr-diethyl 100