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Weeding composition and preparation thereof

A herbicidal composition and preparation technology, applied in the field of herbicidal composition and its preparation, can solve the problems of increasing the risk of antagonism between herbicides, increasing the dosage, poor control effect of broad-leaved weeds, etc., so as to delay weed resistance. The effects of medicinal properties, reduced usage, and reduced pollution

Active Publication Date: 2014-11-19
LIANBAO CROP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, weeds in wheat fields are mainly gramineous weeds and broad-leaved weeds, and pinoxaden is mainly effective against gramineous weeds, and has excellent control effect on broad-leaved weeds typified by chickweed. Extremely poor, making it less effective overall
In order to fully protect wheat from weeds, it is necessary to use a variety of herbicides, which increases the risk of antagonism among the herbicides, increases the dosage, increases the cost, and endangers the environment and the safety of subsequent crops. Safety

Method used

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  • Weeding composition and preparation thereof
  • Weeding composition and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1 Indoor Toxicity Test

[0053] Fill the test soil quantitatively to 4 / 5 of the pot, and use top irrigation to make the soil completely wet to saturated. Sow the pretreated weed seeds for testing (including japonica and chickweed) evenly on the soil surface, cover the soil with 0.5cm, keep the soil fully moist after sowing, and move it into the greenhouse for routine cultivation until the weeds grow to 2-3 leaves period for pesticide treatment. Every 20 weed seeds was regarded as a treatment, and each treatment was repeated 4 times. The application treatment is as follows: take pinoxaden and isoproturon, and compound them at a ratio of 1:1, 1:4, 1:8.5, 1:12.5, 1:25, and 1:60, and mix them The agent is used for weed foliar spraying.

[0054] The co-toxicity coefficient method is used to evaluate the synergistic effect of the wheat field herbicidal composition provided by the invention. Use the natural logarithm of the drug concentration (X) and the growth inh...

Embodiment 2

[0060] Example 2 10% pinoxaden·isoproturon (1:4) wettable powder

[0061] Take pinoxaden 2%, isoproturon 8%, sodium lauryl sulfate 3%, alkyl naphthalene sulfonate 5%, fatty alcohol polyoxyethylene ether carboxylate 3%, NNO (methylene bis Sodium naphthalene sulfonate) 12%, white carbon black 6%, light calcium carbonate make up to 100%, mix uniformly, after jet milling, obtain 10% pyroxaden · isoproturon wettable powder.

Embodiment 3

[0062] Example 3 95% pinoxaden·isoproturon (1:8.5) wettable powder

[0063] Take pinoxaden 10%, isoproturon 85%, sodium lauryl sulfate 0.5%, alkyl naphthalene sulfonate 1%, fatty alcohol polyoxyethylene ether carboxylate 0.6%, NNO (methylene bis Sodium naphthalene sulfonate) 1%, white carbon black 1%, light calcium carbonate make up to 100%, mix uniformly, and after jet crushing, obtain 95% pinoxaden-isoproturon wettable powder.

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Abstract

The invention relates to the field of pesticide preparation, and especially relates to a weeding composition and a preparation thereof. The weeding composition is composed of pinoxaden and isoproturon. The provided weeding composition has a synergetic effect, can effectively prevent and remove graminaceous weeds and broad-leaved weeds in wheat field, delays the generation of pesticide resistant performance of weeds, and reduces the environmental pollution. At the same time the effect of the weed composition is improved, the e graminaceous weeds and broad-leaved weeds can be effectively prevented and treated by one application of the weeding composition, and thus the application amount, application species, and application times of pesticide are all reduced.

Description

technical field [0001] The invention relates to the field of pesticide preparations, in particular to a herbicidal composition and its preparation. Background technique [0002] Wheat is one of the main food crops in northern my country. It is rich in starch, protein, fat, minerals, calcium, iron, thiamine, riboflavin, niacin and vitamin A. It is the second largest grain in the world. Crops, my country's perennial planting area is more than 30 million hectares, second only to rice planting area. [0003] Most of the wheat fields in my country have been affected by weeds to varying degrees. The area of ​​weed damage accounts for more than 55% of the wheat planting area, of which the severely damaged area accounts for 28%, and the loss of yield accounts for 15% of the total wheat output. Therefore, the proportion of herbicides used in domestic wheat fields is almost 100%. [0004] Pinoxaden (PINOXADEN), CAS No. 243973-20-8, molecular formula C 23 h 32 N 2 o 4 , with a mol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/30A01P13/00A01N43/90
Inventor 谢存明武金果任松巧路静
Owner LIANBAO CROP TECH
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