Weeding composition with ethoxysulfuron

Abstract

The invention relates to a weeding composition with ethoxysulfuron, preparation method and application thereof. The weeding composition comprises an ethoxysulfuron compound (A) and one of an acetochlor compound (B1) and a propisochlor compound (B2) in a weight ratio of 0.1:1-100. After being mixed in a proper proportion, the weeding composition can be processed into the conventional pesticide formulations of wettable powder, a suspension emulsion, water dispersible granules by the modern pesticide formulation processing technology and is used for weeding sheathedMonochoria herbs, pondweeds, rotala indica, lindernia procumbens, sagittaria pygmaea, and the like, cyperaceous weeds, such as fescues, difformed galingale herbs, juncellus serotinus, cyperus iria, weeds, and the like, broad leaved weeds and grassy weeds. The control effect of the weeding composition is obviously higher than the control effect of the compound (A) or the compound (B), and the application dosage of each active matter can be greatly reduced. The invention not only has ecological significance, but also has important environmental-protection significance.

Description

technical field

[0001] The present invention relates to herbicidal compositions with improved properties, in particular to herbicidal compositions containing ethoxysulfuron and selected from acetochlor or promethachlor and their use. Background technique

[0002] The general name of compound (A) is ethoxysulfuron-methyl, and its chemical name is 3-(4,6-dimethoxypyridyl-2-yl)-1-(2-ethoxysulfone)urea.

[0003] The English name of ethoxysulfuron: ethoxysulfuron. The development unit is Bayer AG of Germany, which obtained the Chinese patent in May 1989, and the patent publication numbers are CN1044427C(4), CN1068593C(3).

[0004] Ethoxysulfuron-methyl is a high-efficiency sulfonylurea and high-efficiency herbicide, which can effectively control the weeds of the paddy field, such as bermudagrass, syringa, jaggery, moshangcai, dwarf sagittaria, and Cyperaceae weeds such as goosegrass, Shaped sedge, water sedge, broken rice sedge, etc. The control effect on barnyardgrass and oth...

Examples

Embodiment 1

[0035] Example 1: Preparation of wettable powder.

[0036] With 2% active ingredient (A) and 18% active ingredient (B1) or active ingredient (B2), 2% sodium lauryl sulfate as wetting agent, 8% as dispersant carboxylate, 5% of sulfonate as a dispersant, 25% of white carbon black and other inert fillers are thoroughly mixed together and ultrafinely pulverized to obtain a wettable powder.

Embodiment 2

[0037] Embodiment 2: Preparation of suspoemulsion.

[0038] 2% active ingredient (A) and 23% active ingredient (B1) or effective ingredient (B2), 3% Nongru No. 33 as a wetting and dispersing agent, 5% Nongru 2000 as an emulsifier No., 5% ethylene glycol as an antifreeze, 0.2% xanthan gum as a thickener, and water are ground in a sand mill with an appropriate amount of glass beads to obtain a suspoemulsion.

Embodiment 3

[0039] Example 3: Preparation of water-dispersible granules.

[0040] With 5% active ingredient (A) and 25% active ingredient (B1) or active ingredient (B2), 5% carboxylate as wetting agent, 5% NNO as dispersant, 5% as Calcium lignosulfonate as a dispersant and other inert fillers are thoroughly mixed together and ultrafinely pulverized, then an appropriate amount of water and binder is added to the mixture and dried by fluidized bed granulation or extrusion granulation to obtain water. Dispersible granules.

[0041] Biological example:

[0042] Example 1: The control effect of ethoxysulfuron-methyl and acetochlor mixed on paddy field weeds is shown in the table

[0043] Location: Xinyi, Jiangsu Province Investigation period: 20 days after taking the medicine Time: 2010

[0044]

[0045] Conclusion: The actual control effect of the mixed use of ethoxysulfuron-methyl and acetochlor is greater than the theoretical control effect, indicating that the mixed use of ethoxysulf...

technical field

[0001] The present invention relates to herbicidal compositions with improved properties, in particular to herbicidal compositions containing ethoxysulfuron and selected from acetochlor or promethachlor and their use. Background technique

[0002] The general name of compound (A) is ethoxysulfuron-methyl, and its chemical name is 3-(4,6-dimethoxypyridyl-2-yl)-1-(2-ethoxysulfone)urea.

[0003] The English name of ethoxysulfuron: ethoxysulfuron. The development unit is Bayer AG of Germany, which obtained the Chinese patent in May 1989, and the patent publication numbers are CN1044427C(4), CN1068593C(3).

[0004] Ethoxysulfuron-methyl is a high-efficiency sulfonylurea and high-efficiency herbicide, which can effectively control the weeds of the paddy field, such as bermudagrass, syringa, jaggery, moshangcai, dwarf sagittaria, and Cyperaceae weeds such as goosegrass, Shaped sedge, water sedge, broken rice sedge, etc. The control effect on barnyardgrass and oth...

Examples

Embodiment 1

[0035] Example 1: Preparation of wettable powder.

[0036] With 2% active ingredient (A) and 18% active ingredient (B1) or active ingredient (B2), 2% sodium lauryl sulfate as wetting agent, 8% as dispersant carboxylate, 5% of sulfonate as a dispersant, 25% of white carbon black and other inert fillers are thoroughly mixed together and ultrafinely pulverized to obtain a wettable powder.

Embodiment 2

[0037] Embodiment 2: Preparation of suspoemulsion.

[0038] 2% active ingredient (A) and 23% active ingredient (B1) or effective ingredient (B2), 3% Nongru No. 33 as a wetting and dispersing agent, 5% Nongru 2000 as an emulsifier No., 5% ethylene glycol as an antifreeze, 0.2% xanthan gum as a thickener, and water are ground in a sand mill with an appropriate amount of glass beads to obtain a suspoemulsion.

Embodiment 3

[0039] Example 3: Preparation of water-dispersible granules.

[0040] With 5% active ingredient (A) and 25% active ingredient (B1) or active ingredient (B2), 5% carboxylate as wetting agent, 5% NNO as dispersant, 5% as Calcium lignosulfonate as a dispersant and other inert fillers are thoroughly mixed together and ultrafinely pulverized, then an appropriate amount of water and binder is added to the mixture and dried by fluidized bed granulation or extrusion granulation to obtain water. Dispersible granules.

[0041] Biological example:

[0042] Example 1: The control effect of ethoxysulfuron-methyl and acetochlor mixed on paddy field weeds is shown in the table

[0043] Location: Xinyi, Jiangsu Province Investigation period: 20 days after taking the medicine Time: 2010

[0044]

[0045] Conclusion: The actual control effect of the mixed use of ethoxysulfuron-methyl and acetochlor is greater than the theoretical control effect, indicating that the mixed use of ethoxysulf...

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