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A herbicidal composition safe to crops and its application

A herbicidal composition and crop technology, applied in the field of agrochemicals, can solve the problems of low safety, great environmental hazards, and poor control effects of pollution, and achieve the effect of high safety, environmental friendliness, and stable weeding effect

Active Publication Date: 2022-01-14
青岛恒宁生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems in the prior art that herbicides are used alone, resulting in poor control effect, large environmental hazards, and low safety for current crops and subsequent crops, and to provide a stable herbicide that is environmentally friendly and environmentally friendly. Crop safe herbicidal composition

Method used

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  • A herbicidal composition safe to crops and its application
  • A herbicidal composition safe to crops and its application
  • A herbicidal composition safe to crops and its application

Examples

Experimental program
Comparison scheme
Effect test

preparation preparation example

[0045] Formulation 1: 23% pendimethalin·propargyl oxadiazone·propargyl oxadiazone dispersible oil suspension concentrate (20:2:1)

[0046] Pendimethalin 20%, oxadiazone propargyl 2%, fluorfen propargyl 1%, succinate sulfonate 1%, sorbitan fatty acid ester polyoxyethylene ether 9%, dodecane Calcium phenyl sulfonate 3%, tristyryl phenol polyoxyethylene ether 3%, white carbon black 1%, organic bentonite 0.5%, corn oil supplemented to 100%.

[0047] Preparation 2: 25% pendimethalin·propargyl oxadiazone·propargyl fluoride emulsion in water (20:4:1)

[0048] Pendimethalin 20%, oxadiazone propargyl 4%, fluramid propargyl 1%, xylene 10%, cyclohexanone 10%, ethylene oxide-propylene oxide copolyether 4%, arylphenol Ether phosphate salt 1%, glycerin 5%, silicone defoamer 0.01%, xanthan gum 0.1%, kasone 0.01%, water to make up to 100%.

[0049] Preparation 3: 40% pendimethalin·propargyl oxadiazone·propargyl fluoride emulsifiable concentrate (15:4:1)

[0050] Pendimethalin 30%, oxadiazo...

Embodiment 1

[0053] Example 1: Determination of indoor activity of common weeds mixed with pendimethalin, oxadiazone propargyl and flumechlor propargyl.

[0054] Targets of the test: weeds such as Avena fatua, Setaria viridis, Galium aparine, and Capsella bursa-pastoris were selected as the test objects, and some mature and plump plant seeds of the previous year were taken. spare.

[0055] Test treatment: the cultivation container is a flowerpot with a diameter of 32cm, add an appropriate amount of peat soil (organic matter content ≤ 2%), fill it quantitatively to 4 / 5 of the flowerpot, and replenish water by infiltrating the bottom of the flowerpot to make the soil completely moist . Spread 20 tested weed seeds after germination evenly on the soil surface, cover with soil about 1 cm, and carry out soil spray treatment 24 hours after sowing.

[0056] Drugs to be tested: 96% pendimethalin original drug, 98% propargyl oxadiazone original drug, 99.2% propargyl fluorazone original drug.

[0...

Embodiment 3

[0100] Example 3 Field efficacy test of different pesticides for controlling weeds in garlic fields

[0101] The test crop is garlic, the variety is Lusuan No. 2; the subsequent crop is cotton, and the variety is Huazamian H318.

[0102] The test agent is 23% pendimethalin·propargyl oxadiazone·propargyl fluoride dispersible oil suspension concentrate (20:2:1), 25% pendimethalin·propargyl oxadiazone·propargyl fluoride Grass amine water emulsion (20:4:1), 40% pendimethalin·propargyl oxadiazone propargyl oxadiazide EC(15:4:1); the control agent is 34% oxyfluoride·dimethopentyl Ling emulsifiable concentrate, 330g / L pendimethalin emulsifiable concentrate.

[0103] A total of 7 (3+2+2) treatments in the test, 23% pendimethalin · propargyl oxadiazone · propargyl fluorazone dispersible oil suspension concentrate 600a.i g / hm 2 (Treatment 1), 25% pendimethalin · propargyl oxadiazone · propargyl fluoride emulsion 600a.i g / hm 2 (Treatment 2), 40% pendimethalin · propargyl oxadiazone · ...

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Abstract

The invention discloses a crop-safe herbicidal composition and application thereof, comprising the following effective components: pendimethalin, oxadiazon and fenoxafen. The weight ratio is (1~80):(1~50):(1~50), and the total weight percentage of pendimethalin, oxadiazon and cyflufen in the composition is 1% ~80%. The herbicidal composition of the invention has stable herbicidal effect, can be strongly adsorbed by soil, has low mobility in soil, is environmentally friendly, and is safe for current and subsequent crops.

Description

technical field [0001] The invention belongs to the field of agricultural chemistry, and in particular relates to a herbicidal composition safe for crops and its application. Background technique [0002] Weeds have strong adaptability and compete with crops for light, water, fertilizer and other resources. If the control is not effective, the mild ones will directly inhibit the normal growth and development of crops, causing varying degrees of loss in crop yield and quality, and the severe ones will lead to barren fields. Even crops fail. Weeds that are present at planting often outgrow crops, competing early in the growing season. Therefore, it is desirable to grow crops in weed-free seed beds or to ensure a substantial absence of weeds at crop emergence. [0003] Pendimethalin (pendimethalin) CAS registration number is 40487-42-1, belongs to dinitrotoluidine selective soil treatment herbicide, mainly inhibits meristem cell division, inhibits secondary root growth, and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N33/18A01N43/824A01N43/84A01P13/00
Inventor 刘金玲葛家成张芳刘志航孙名帅
Owner 青岛恒宁生物科技有限公司
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