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Compound weeding composition of pretilachlor and pyrazosulfuron-ethyl and granules of composition

A herbicidal composition, the technology of pyrazosulfuron-methyl, is applied in the directions of herbicides, algicides, biocides, animal repellents, etc., and can solve the problem of increasing the labor intensity of farmers, inability to apply medicines at the same time, and increasing the number of applications, etc. problems, to achieve the effect of rice safety, reduce labor intensity, and avoid pollution

Inactive Publication Date: 2013-05-08
SINO AGRI LEADING BIOSCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of wettable powder is that it is easy to cause the powder to fly when spraying, which will cause harm to the operator, and the residual powder in the packaging bag will pollute the environment
Pretilachlor has a better effect on annual grass weeds, and pyrazosulfuron-methyl has a better control effect on broad-leaved weeds. In order to remove weeds, these two raw materials are often used in complementarity, but in actual operation, the two cannot Applying pesticides at the same time needs to be used at intervals, which increases the frequency of pesticide application and increases the labor intensity of farmers, and because spraying is required during the application process, it will cause harm to farmers' bodies

Method used

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  • Compound weeding composition of pretilachlor and pyrazosulfuron-ethyl and granules of composition
  • Compound weeding composition of pretilachlor and pyrazosulfuron-ethyl and granules of composition
  • Compound weeding composition of pretilachlor and pyrazosulfuron-ethyl and granules of composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1, preparation contains the granule of pretilachlor and pyrazosulfuron-methyl

[0045] (1) Formula:

[0046] The granule containing pretilachlor and pyrazosulfuron-methyl is composed of the following raw materials in mass percentage: 2.0% of pretilachlor, 0.1% of pyrazosulfuron-methyl, NNO (sodium methylene bis-naphthalenesulfonate) 10% %, K12 (sodium lauryl sulfate) 3%, anhydrous sodium sulfate 25%, ammonium sulfate 25%, CE-810K (fatty acid methyl ester, its consumption is 10 times of pyrazosulfuron-methyl quality) and acetone ( Its dosage is 20 times of the quality of pyrazosulfuron-methyl), and kaolin makes up 100%.

[0047] (2) Preparation method:

[0048] According to the above-mentioned raw material ratio, use CE-810K and acetone to dissolve pretilachlor and pyrazosulfuron-methyl into the mother liquor; then put NNO, K12, anhydrous sodium sulfate, ammonium sulfate and kaolin into the mixer and mix evenly. The jet mill is crushed into a powder, and th...

Embodiment 2

[0049] Example 2, preparation of granules containing pretilachlor and pyrazosulfuron-methyl

[0050] (1) Formula:

[0051] The granules containing pretilachlor and pyrazosulfuron-methyl are composed of the following raw materials in mass percentage: 3.0% of pretilachlor, 0.1% of pyrazosulfuron-methyl, Morwet D-425 (alkyl naphthalene sulfonate formaldehyde polycondensate) 10%, K12 (sodium lauryl sulfate) 3%, anhydrous sodium sulfate 25%, ammonium sulfate 25%, bentonite 31.9%, white carbon black 2%.

[0052] (2) Preparation method:

[0053] According to the above raw material ratio, first use white carbon black to absorb pretilachlor and mix it into powder; then put the powder, pyrazosulfuron-methyl, Morwet D-425, K12, anhydrous sodium sulfate, ammonium sulfate and bentonite into the mixer Mix evenly, pulverize into powder by ultra-fine jet mill, add water and mix to form mother powder; granulate the mother powder through granulator, dry, sieve and analyze by sampling, and the...

Embodiment 3

[0054] Example 3, preparation of granules containing pretilachlor and pyrazosulfuron-methyl

[0055] (1) Formula:

[0056] The granules containing pretilachlor and pyrazosulfuron-methyl are composed of the following raw materials in mass percentage: pretilachlor 1.0%, pyrazosulfuron-methyl 0.2%, Tersperse2700 (polycarboxylate comb copolymer) 6 %, OP-10 (octylphenol polyoxyethylene (10) ether) 2%, anhydrous sodium sulfate 25%, diatomaceous earth 5%, cornstarch 60.8%.

[0057] (2) Preparation method:

[0058] According to the above raw material ratio, put the active ingredient pyrazosulfuron-methyl and the required amount of Tersperse2700, anhydrous sodium sulfate, diatomaceous earth and cornstarch into the mixer and mix them evenly, and pulverize them into powder through an ultra-fine jet mill, and add Mix pretilachlor and OP-10 evenly, and finally add water and mix to form mother powder; the mother powder is granulated by a granulator, dried, sieved and analyzed by sampling,...

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PUM

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Abstract

The invention discloses a weeding composition and granules thereof. The weeding composition consists of pretilachlor and pyrazosulfuron-ethyl, wherein the mass ratio of the pretilachlor to the pyrazosulfuron-ethyl is (1-5): (0.1-0.2), preferably 2: (0.1-0.2). The granules take the weeding composition as an active ingredient, and comprise the following components in percentage by mass: 1 to 5 percent of pretilachlor, 0.1 to 0.2 percent of pyrazosulfuron-ethyl, 5 to 10 percent of dispersant, 2 to 10 percent of wetting agent, 0 to 10 percent of disintegrating agent, 0 to 3 percent of adhesive, 0 to 5 percent of adsorbent, and the balance of filler. The compound granules containing the pretilachlor and the pyrazosulfuron-ethyl can be applied at one time, the weeding spectrum is expanded, the application uniformity is improved, the effect is improved, the lasting period is prolonged, the consumption and the using cost are reduced, and environmental pollution caused by application is reduced at the same time.

Description

technical field [0001] The invention relates to a compound herbicidal composition of pretilachlor and pyrazosulfuron-methyl and its preparation. Background technique [0002] Pretilachlor (Pretilachlor), also known as Saofert. Chemical name: 2-chloro-N-(1-methyl-2-methoxyethyl)-N-(2-ethyl-6-methylphenyl)acetamide, CAS NO.: 51218-49-6 , molecular formula: C17H26C1NO2, chemical structural formula: [0003] [0004] Pretilachlor is a selective pre-emergent herbicide developed by Swiss Novartis (NOVARTIS). Mainly through the absorption of plant hypocotyls, mesocotyls and coleoptiles, it directly interferes with the protein synthesis in weeds, and has an indirect effect on photosynthesis and respiration, leading to the death of weeds. However, rice has a strong ability to decompose pretilachlor, so it has certain selectivity. Pretilachlor can effectively control annual grasses and some broad-leaved weeds in rice fields, such as barnyardgrass, bermudagrass, and amaranth, bu...

Claims

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Application Information

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IPC IPC(8): A01N47/36A01N37/22A01N25/12A01P13/00
Inventor 张小军王成弼李彦飞郭勇飞
Owner SINO AGRI LEADING BIOSCI
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