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Weeding composition containing pretilachlor, pyriminobac-methyl and bensulfuron methyl

A herbicidal composition, the technology of bensulfuron-methyl, is applied in the directions of herbicides, algicides, biocides, animal repellents, etc. Weed resistance and other issues, to achieve the effect of reducing environmental pollution, excellent herbicidal effect, and improving herbicidal effect

Inactive Publication Date: 2021-07-20
BENGBU ZHONGTU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The long-term use of chemical agents alone is likely to cause the emergence of weed resistance and pollute the environment. Finding synergistic compositions that can improve the weeding effect and reduce the dosage of active ingredients is the research and development focus of many domestic pesticide companies
In the prior art, there is no relevant report on the compound use of pretilachlor, pyrizachlor-methyl and bensulfuron-methyl

Method used

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  • Weeding composition containing pretilachlor, pyriminobac-methyl and bensulfuron methyl
  • Weeding composition containing pretilachlor, pyriminobac-methyl and bensulfuron methyl
  • Weeding composition containing pretilachlor, pyriminobac-methyl and bensulfuron methyl

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: Indoor Toxicity Determination of Pretilachlor, Pyriflun-methyl and Bensulfuron-methyl on Barnyard Grass

[0016] Weeds to be tested: barnyardgrass seeds, mature seeds collected in the field and preserved in the laboratory.

[0017] Drugs to be tested: the original drug of pretilachlor, the original drug of pyriflux-methyl, and the original drug of bensulfuron-methyl; purchased from the market.

[0018] Test method: The test soil is the special test soil collected from the untreated plot. Fill the 3 / 4 of the flower pot with the special soil for the test; place the flower pot in a pot filled with water, and the water penetrates from the bottom of the flower pot to make the soil completely moist. Sow quantitatively 25 barnyardgrass seeds in flowerpots, cover with soil 1cm after sowing. 24 hours after sowing, the soil was sprayed with a belt crop sprayer according to the experimental design dosage. The experiment was repeated 4 times, and the water control was...

Embodiment 2

[0023] Embodiment 2 preparation embodiment

[0024] 48% propyridine benzyl dispersible oil suspension concentrate

[0025] Pretilachlor 40%, Pyriflufen-methyl 4%, Bensulfuron-methyl 4%, Nongru 500# 7%, Castor Oil Polyoxyethylene Ether 3%, SP-OF3468 8% (SP-SC3 is used for water-based dosage form), organic bentonite 2%, white carbon black 2%, soybean oil supplement 100%.

[0026] 48% propyrimene wettable powder

[0027] Pretilachlor 40%, Pyriflubac 4%, Bensulfuron-methyl 4%, Sodium Lauryl Sulfate 5%, Calcium Lignosulfonate 6%, White Carbon Black 3%, Kaolin supplement 100%.

[0028] 48% propyridine benzyl water dispersible granules

[0029] Pretilachlor 40%, pyrifluconate 4%, bensulfuron-methyl 4%, pull open powder 4%, NNO 5%, ammonium sulfate 3%, polyethylene glycol 4%, kaolin supplement 100%.

Embodiment 3

[0030] Example 3 Determination of field efficacy of pretilachlor, pyriflun-methyl and bensulfuron-methyl on weeds in paddy fields

[0031] Field weeds in the test crops of direct-seeding rice fields: crabgrass, barnyardgrass, bermudagrass, and spinach.

[0032] Application method: set 3 chemical treatments, 1 blank control, repeat 4 times; each plot area is 45m2, arranged randomly. The pesticide was applied 5 days before rice sowing, and the soil was sprayed with a sprayer. 30 days after spraying, the fresh weight control effect of weeds was investigated.

[0033] Table 2 Effects of compound preparations on weed control in direct-seeded rice fields

[0034]

[0035] Result analysis: It can be seen from Table 2 that when the application rate of the compound preparation is 30g a.i. / mu, its total control effect on weeds crabgrass, barnyardgrass, bermudagrass and knotweed is about 90%. At the same dosage, 48% propyrimazole dispersible oil suspension concentrate has excellent...

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Abstract

The invention provides a weeding composition containing pretilachlor, pyriminobac-methyl and bensulfuron methyl, the active ingredients comprise pretilachlor, pyriminobac-methyl and bensulfuron methyl, and the mass ratio of pretilachlor to pyriminobac-methyl to bensulfuron methyl is (1-50):(1-5):(1-5). The weeding composition disclosed by the invention can be used for preventing and removing annual weeds in crop fields and has a remarkable synergistic effect.

Description

technical field [0001] The invention belongs to the field of herbicides, and in particular relates to a herbicidal composition comprising pretilachlor, pyrizachlor-methyl and bensulfuron-methyl and an application thereof. Background technique [0002] Pretilachlor is an amide selective pre-emergence herbicide, which can be absorbed through plant hypocotyls, mesocotyls and coleoptiles, and slightly absorbed by roots, directly interfering with protein synthesis in weeds, and indirectly affecting photosynthesis and respiration . Distort the seedlings of the damaged weeds, make it difficult for the first leaves to protrude, the leaves turn dark green, stop growing, and die; it can effectively control barnyardgrass, rice barnyardgrass, daughter, sweet intestines, moshangcai, bermudagrass, and festival Annual grass weeds and broad-leaved weeds such as vegetables and cattle felt. [0003] Pyrimifluben is a pyrimidine systemic selective herbicide, which can be absorbed through the...

Claims

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Application Information

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IPC IPC(8): A01N37/22A01N43/54A01N47/36A01P13/00
CPCA01N37/22A01N43/54A01N47/36
Inventor 李玉洁李冰清李多才
Owner BENGBU ZHONGTU CHEM
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