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Wheatland weeding composition and preparation thereof

A herbicidal composition and herbicide technology, applied in the direction of herbicides, algicides, biocides, animal repellents, etc., can solve the risk of increasing antagonism between herbicides, endanger the environment, the safety of subsequent crops, increase To achieve the effect of delaying weed resistance, improving drug efficacy and reducing pollution

Inactive Publication Date: 2012-03-07
河南中天恒信生物化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the weeds in the wheat field are grass weeds and broad-leaved weeds as the main weeds, and 2-methyl-4-chlorine can only control broad-leaved weeds, and it is effective against grasses such as hard grass, wild oats, and barnyard grass. Grass invalid
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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  • Wheatland weeding composition and preparation thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Embodiment 1: the control effect test of herbicidal composition of the present invention to weeds

[0018] The test was carried out in a wheat field in Zhoukou, Henan Province. The herbicidal composition was formulated with pyresullam and 2-methyl-4-chlor as active ingredients, and a certain amount of adjuvants were added. Among them, each treatment was repeated 4 times, the area of ​​the plot was 20m2, a total of 28 plots were arranged in random blocks, the original drug of each treatment was dissolved in water and the final volume was the same, and the spring wheat was sprayed evenly at the tillering stage. The number of weeds of each type was counted before spraying, and the number of dead weeds was counted 30 days after spraying. See Table 1 for the test treatments and application rates, and Table 2 for the control results. The anti-efficiency calculation is according to the following formula:

[0019] Control effect (%) = 1-(number of weeds after application ÷ nu...

Embodiment 2

[0026] Example 2: 25% pyresullam · 2 M 4 chlorine water dispersible granules

[0027] Pyresulam 1%, 2-methyl-4-chlor 24%, sodium lignosulfonate 2%, polyoxyethylene polyoxypropylene ether block copolymer 4%, silica gel 1%, kaolin supplement 100%, after thorough mixing, air flow Crush, mix, granulate, dry and sieve to obtain 25% acesulfame·2M4Cl water-dispersible granules.

[0028] The herbicide prepared in this example is compared with the single agent made from a single active ingredient, and the amount of each active ingredient in the herbicide according to the present invention is less than the premise of the amount of each active ingredient used as a standard. Under the conditions, the control effect of the herbicide of the present invention is higher than that of a single agent, and has no cross resistance, and can effectively control grass weeds and broad-leaved weeds at the same time.

Embodiment 3

[0029] Example 3: 40% acesulfame·2M4Cl wettable powder

[0030] Acesulfame 1%, 2-methyl-4-chlor 39%, sodium lauryl sulfate 2%, PICO-NW 14%, PEG 4%, light calcium carbonate supplement 100%, after thorough mixing, jet milling, mixing, That is, 40% acesulfame·2-methyl-4-chloro wettable powder was obtained.

[0031] The herbicide prepared in this example is compared with the single agent made from a single active ingredient, and the amount of each active ingredient in the herbicide according to the present invention is less than the premise of the amount of each active ingredient used as a standard. Under the conditions, the control effect of the herbicide of the present invention is higher than that of a single agent, and has no cross resistance, and can effectively control grass weeds and broad-leaved weeds at the same time.

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Abstract

The invention relates to the field of pesticide preparations and discloses a wheatland weeding composition. The wheatland weeding composition disclosed by the invention comprises pyroxsulam and 2-methyl-4-chlorophenoxyacetic acid, wherein the mass ratio of the pyroxsulam to the 2-methyl-4-chlorophenoxyacetic acid is 1:(20-50). The invention further discloses a weed killer comprising the weeding composition disclosed by the invention and agrochemically acceptable auxiliary materials, wherein the weeding composition is 1-90% by weight of the weed killer. The weeding composition and a preparation thereof disclosed by the invention take the pyroxsulam and the 2-methyl-4-chlorophenoxyacetic acid as active components, the advantages of the two components are complemented mutually, so that weed pesticide resistance is retarded, environment pollution is reduced, meanwhile, the pesticide effect is improved; and grass weeds and broadleaf weeds are effectively controlled by applying pesticides once, therefore, usage amount, types and times of pesticides are reduced, and the wheatland weeding composition can be widely applied in the agricultural field.

Description

technical field [0001] The invention relates to the field of pesticide preparations, in particular to a wheat field 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. 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%. [0003] 2M 4 Chlorine herbicides are safe to wheat crops, and have good control effects on broad-leav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N39/04A01P13/00
Inventor 王洲卢桂鲜
Owner 河南中天恒信生物化学科技有限公司
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