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Rice field weeding composition

A herbicidal composition and a technology for paddy fields, which are applied in the field of agrochemicals, can solve the problems of narrowing herbicidal spectrum, environmental pollution, weeds are prone to produce drug resistance, etc. The effect of drug resistance

Inactive Publication Date: 2017-05-31
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Herbicide varieties containing a single active component have defects in weed control to varying degrees, such as weeds are prone to resistance after continuous use, the herbicide spectrum becomes narrower, and environmental pollution is caused.

Method used

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  • Rice field weeding composition
  • Rice field weeding composition
  • Rice field weeding composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The synergistic effect of the combination of halopyridine and cyhalofop-methyl on weeds in paddy fields will be illustrated below through the indoor toxicity test.

[0020] In order to control weeds in paddy fields, the inventors conducted synergistic research on the mutual compounding of the active ingredients halopyridine and cyhalofop-methyl. The specific method is as follows: the test targets are the grassy weeds crabgrass. The original drug is prepared into the required test agent, and the test method refers to the "People's Republic of China Agricultural Industry Standard NY / T1155.7-2006 Indoor Bioassay Test Guidelines for Pesticides and Herbicides Part 7: Determination of Combined Effects of Mixing". Firstly, the single agent and each mixed agent are set to 5-7 different concentrations. Set water control, repeated 4 times. Adopt post-emergence stem-leaf spraying method, prepare the weeds for testing in advance, wait for the weeds 3 leaf 1 heart stage for standby...

Embodiment 2

[0033] Formulation example 2 18% halopyridine-cyhalofop-methyl dispersible oil suspension concentrate (1:2)

[0034] Cyhalofop-methyl active ingredient 6%, cyhalofop-ester active ingredient 12%, calcium dodecylbenzenesulfonate 5%, castor oil polyoxyethylene ether 4%, polyoxyethylene polyoxypropylene block copolymer 3% , 0.1% organic silicon defoamer, 3% organic bentonite, the balance of soybean oil. All the above-mentioned ingredients are mixed evenly according to the stated ratio, and the average particle size of the obtained material is less than 5 microns after being ground by a horizontal sand mill, and then 18% halopyridine-cyhalofop-methyl dispersible oil suspension concentrate can be prepared.

Embodiment 3

[0035] Dosage Form Example 3 20% halopyridine-cyhalofop-methyl emulsion in water (1:1)

[0036] 10% of the active ingredient of halopyridine, 10% of the active ingredient of cyhalofop-methyl, 3% of polyoxyethylene polyoxypropylene block copolymer, 4% of fatty alcohol polyoxyethylene ether, 0.2% of silicone defoamer, xanthan Glue 0.15%, propylene glycol 5%, sodium benzoate 0.1%, aromatic hydrocarbon S-150 No. solvent naphtha 20%, water balance. After weighing the above ingredients according to the ratio, follow the steps below. Dissolve the two original drugs of halopyridine and cyhalofop in aromatic hydrocarbon S-150 solvent oil, add polyoxyethylene polyoxypropylene block copolymer, fatty alcohol polyoxyethylene ether to emulsify into an oil phase, and set aside ; Add xanthan gum, propylene glycol, sodium benzoate and defoamer to water to form a water phase; slowly add water phase to the oil phase, and shear at high speed for 30 minutes to make 20% halofopyridine · cyhalofop-...

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Abstract

The invention discloses a rice field weeding composition and application thereof, and relates to the technical field of pesticide compounding. The rice field weeding composition is prepared from, by weight, 10-60% of active ingredients and 40-90% of pesticide preparation auxiliary ingredients, wherein the first active ingredient is halauxifen-methyl, the second active ingredient is any one of cyhalofop-butyl and metamifop, and the weight ratio of the first active ingredient to the second active ingredient is (1:10)-(10:1). By means of the rice field weeding composition, a weed control spectrum can be significantly extended, and the overall control effect on rice field weeds can be improved. Meanwhile, the composition is good for rice safety and is a very good novel pesticide composition capable of controlling annual weeds in a rice field.

Description

technical field [0001] The invention belongs to the field of agrochemicals, and in particular relates to a herbicidal composition aimed at solving the problem of controlling annual weeds in paddy fields. Background technique [0002] Florpyrauxifen belongs to pyridine synthetic hormone herbicides, acetolactate synthase (ALS) inhibitors, acetyl-CoA carboxylase inhibitors (ACCase) inhibitors, p-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitors, propanil, clopyralid, glyphosate, triazine herbicides and other weeds that are resistant All have certain herbicidal activity. [0003] Cyhalofop-butyl (Cyhalofop-butyl) belongs to aryloxyphenoxypropionic acid herbicides, the mechanism of action is acetyl-CoA carboxylase inhibitor, which stops the synthesis of fatty acids, and the growth and division of cells cannot be carried out normally, and the membrane system, etc. The lipid-containing structure is destroyed, eventually leading to the death of the plant. It is highly safe to r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/40A01N39/04A01N43/76A01P13/00
CPCA01N43/40A01N39/04A01N43/76A01N2300/00
Inventor 陈丰喜祁月月王国华范伟赠钱祥法
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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