Herbicidal composition for controlling harmful weeds in areas where corn is grown and use thereof

A herbicidal composition and regional technology, applied in the direction of chemicals, biocides, herbicides and algicides used for biological control, can solve the problems of ineffective inhibition and high drug resistance, and achieve the purpose of delaying weeds Effects of drug resistance, expanding herbicidal spectrum, and avoiding phytotoxicity problems

Active Publication Date: 2020-03-17
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some corn varieties have high drug resistance, and the inhibition effect is not obvious, but some varieties are more sensitive, and the inhibition rate of plant height reaches about 10%.

Method used

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  • Herbicidal composition for controlling harmful weeds in areas where corn is grown and use thereof
  • Herbicidal composition for controlling harmful weeds in areas where corn is grown and use thereof
  • Herbicidal composition for controlling harmful weeds in areas where corn is grown and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The invention provides a herbicidal composition containing phenyl substituted oxazole isoxazole carboxamides and clopyrazosulfuron-methyl, which comprises herbicidally effective safener, herbicide and adjuvant.

[0027] The herbicidal composition of the present invention comprises an effective amount of

[0028] A) formula I safener of detoxification effective amount

[0029]

[0030] R 1 is hydrogen or halogen;

[0031] R 2 is hydrogen or halogen;

[0032] R 3 is hydrogen or an alkyl group having 1 to 3 carbon atoms;

[0033] R 4 is hydrogen or an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 1 to 6 carbon atoms;

[0034] R 5 is hydrogen or an alkyl group having 1 to 3 carbon atoms;

[0035] R 6 It is hydrogen, methyl, phenyl or α-heterocyclic substituent.

[0036] B) Clopyrazosulfuron.

[0037] C) auxiliary agent, characterized in that it contains one or more of carriers, emulsifiers, dispersants, disintegrants, thickeners, wetting...

Embodiment 2

[0051] Embodiment 2: 10% safener A+40% chlorpyrazosulfuron wettable powder

[0052] weight ratio

[0053]

[0054] The components are mixed in proportion and pulverized by an ultrafine pulverizer to obtain the wettable powder of the herbicidal composition.

Embodiment 3

[0055] Embodiment 3: 20% safener B+20% chlorpyrazosulfuron-methyl emulsifiable concentrate

[0056] weight ratio

[0057]

[0058] The components are mixed in proportion and stirred evenly to obtain the herbicidal composition emulsifiable concentrate.

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PUM

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Abstract

The invention relates to a weeding composition used for controlling harmful weeds in corn growth areas, and an application. The weeding composition contains a safety agent A and an active component Bof effective weeding quantity as effective components; the safety agent A is a phenyl substituted oxazole isoxazole formamide compound which is shown as the following formula; and the weight ratio ofcomponent A to B containing effective quantities is 1-4 : 1-5. The application of the weeding composition used for controlling harmful weeds in corn growth areas is also provided. The composition caneffectively control most of weeds in corn fields, and basically has no damage to crops, so that secondary phytotoxicity cannot be brought, and the contained safety agent can effectively avoid phytotoxicity of a halosulfuron-methyl herbicide on corns. Compared with herbicide single doses, the weeding composition enlarges weed controlling spectrums, so that the phytotoxicity problems caused by the halosulfuron-methyl herbicide can be avoided, the occurrence of weed resistance can be delayed, and safety for the corns can be realized.

Description

technical field [0001] The invention relates to the technical field of herbicides, in particular to a herbicide composition for preventing and controlling harmful weeds in areas where corn grows and uses thereof. Background technique [0002] With the development of economy and society, the world's population has increased by leaps and bounds for 30 consecutive years. In 2016, the world's population has exceeded the 7.3 billion mark. However, the area of ​​arable land worldwide is decreasing due to environmental deterioration, soil erosion and other reasons. It has become a hot topic in agricultural research to reduce agricultural losses and increase food production through effective control of weeds in farmland. Sulfonylurea herbicides are the most widely used and most diverse herbicides in the world today. These herbicides have the advantages of high activity, low toxicity, low dosage and high selectivity. Their targets are amino acids in plants. The enzyme acetolactate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/32A01N47/36A01P13/00
CPCA01N25/32A01N47/36
Inventor 叶非付颖赵李霞高爽吴世龙
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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