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Synergistic weeding composition and method for controlling undesirable plant growth

A herbicidal composition and plant growth technology, which is applied in the field of synergistic herbicidal compositions, can solve the problems of crop damage, limited herbicidal spectrum, and poor activity, and achieve delayed weed resistance, high herbicidal activity, and long-lasting effect long effect

Inactive Publication Date: 2017-01-04
JIANGSU ROTAM CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, herbicides are limited by the safety of crops, and the herbicidal spectrum is also limited. Using a single herbicide alone cannot completely and effectively control the occurrence of weeds in crop fields. On the other hand, the amount of herbicide is too large or the application is uneven. Also prone to unacceptable toxicity to current or subsequent crops
Pyroclofensulfone is a highly effective pre-emergence herbicide but has poor post-emergence activity
In addition, pyroxasulfone is compatible with some dicotyledonous crops such as cotton, sunflower, soybean, brassica (brassica) crops such as canola (canola) and rapeseed, and some gramineous crops such as rice, wheat, black The compatibility of wheat and barley is not always satisfactory, that is, in addition to harmful plants, crops are also damaged to an unacceptable extent
Although in principle it is possible to reduce the application rate without damaging the crop, the degree of control of harmful plants is also naturally reduced

Method used

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  • Synergistic weeding composition and method for controlling undesirable plant growth
  • Synergistic weeding composition and method for controlling undesirable plant growth
  • Synergistic weeding composition and method for controlling undesirable plant growth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] Example 1: 60% pyroxasulfone + 6% mefenacet suspending agent

[0110] pyroxasulfone 60%

[0111] Mefenacet 6%

[0112] Tristyrylphenol polyoxyethylene ether 5%

[0113] Sodium p-methoxy fatty amidobenzenesulfonate 5%

[0114] Bentonite 1%

[0115] Glycerol 5%

[0116] Urea 5%

[0117] Make up to 100% with water

[0118] Mix the active components, dispersant, wetting agent and water according to the ratio of the formula, and grind and / or high-speed shear to obtain 60% pyroxasulfone + 6% mefenamide suspending agent.

Embodiment 2

[0119] Example 2 2% pyroxasulfone + 10% mefenacet wettable powder

[0120] pyroxasulfone 2%

[0121] Mefenacet 10%

[0122] Polyoxyethylene glyceryl monofatty acid ester 10%

[0123] Sodium Laureth Carboxylate 5%

[0124] Silica 10%

[0125] Kaolin supplemented to 100%

[0126] The active ingredients, various additives and fillers are mixed according to the ratio of the formula, and after being pulverized by a superfine grinder, the wettable powder of 2% pyroxasulfone + 10% mefenacet is obtained.

Embodiment 3

[0127] Example 3 2% pyroxasulfone + 50% mefenacet wettable powder

[0128] pyroxasulfone 2%

[0129] Mefenacet 50%

[0130] Fatty alcohol polyoxyethylene ether 1%

[0131] Alkylphenol polyoxyethylene ether formaldehyde condensate 2%

[0132] Silica topped up to 100%

[0133] The active ingredients, various additives and fillers are mixed according to the proportion of the formula, and after being pulverized by a superfine grinder, the wettable powder of 2% pyroxasulfone + 50% mefenacet is obtained.

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Abstract

The invention provides a synergistic weeding composition which contains active components pyroxasulfone and mefenacet. Weight ratio of pyroxasulfone to mefenacet is 50: 1-1: 100. The synergistic weeding composition is used for controlling undesirable plant growth. The invention also provides a method for controlling undesirable plant growth. According to the method, the active components pyroxasulfone and mefenacet of the synergistic weeding composition are applied together or separately applied to undesirable plants or growth places of the undesirable plants. The invention also provides a method for reducing or preventing damage of pyroxasulfone to plants, seeds or other reproduction parts of useful crops treated with pyroxasulfone.

Description

Technical field [0001] The present invention relates to a synergistic herbicidal composition and a method for controlling undesirable plant growth. Background technique [0002] Crop yields are reduced due to weed damage. Therefore, large amounts of herbicides need to be applied every year to control weeds to restore crop yield losses. In recent years, the harm of weeds to crops has become more and more serious, and due to the abuse of herbicides, weeds have become increasingly resistant to pesticides, causing the weed control effect to decrease year by year. [0003] The most commonly used method of increasing herbicidal activity and broadening the herbicidal spectrum of existing herbicides is to mix two or more herbicidal active substances with different herbicidal activities. If two or more herbicidal active substances are mixed, it may show greater herbicidal efficacy than individual herbicide applications. When the potency of a mixture of two or more ingredients is gr...

Claims

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Application Information

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IPC IPC(8): A01N43/80A01P13/00A01N43/78
Inventor 罗昌炎詹姆斯·T·布里斯托
Owner JIANGSU ROTAM CHEM
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