Paddy field weeding composition

A herbicidal composition and paddy field technology, applied in the field of pesticides, can solve problems such as frequent use of herbicides, difficulty in completely controlling weeds, and high dosage of pesticides in the field, so as to delay weed resistance, have a significant weeding effect, or Controlling the effect of weed resistance

Inactive Publication Date: 2016-12-07
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The herbicidal composition can effectively solve many problems currently faced in the prevention and control of weeds in paddy fields, such as large field application doses, frequent use of herbicides, serious pesticide residues, difficulty in completely controlling weeds, and easy to produce resistance.

Method used

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  • Paddy field weeding composition
  • Paddy field weeding composition
  • Paddy field weeding composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Determination of biological activity of rimazansulfuron, propargyl oxadiazone and promethazine in single agent and compounded on Zihua and Spirogyra

[0040]Targets for testing: Zipina and Spirogyra were collected in the field. After screening and washing, the plants with strong growth and basically the same growth were selected, and they were placed in plastic incubators of 32*45*24, and they were cultivated and propagated in the greenhouse.

[0041] Test agents: 98% rimsulfuron-methyl TC, 96% propargyl oxadiazone TC and 95% promazone TC.

[0042] Test medicament and preparation: Weigh a certain amount of the original drug, choose a suitable organic solvent to dissolve it to make a mother liquor, and dilute it with distilled water containing 0.1% Tween-80 to make a test dose according to the set dose for treatment.

[0043] Test single dose and dose setting: rimsulfuron-methyl (code A): 30, 52.5 and 75ga.i / hm2 (codes are A1~A3 respectively); propargyl oxadiazone (code ...

Embodiment 2

[0054] Determination of biological activity of sulfasulfuron-methyl, propargyl oxadiazone and promethazine single and compound against green algae

[0055] Test target: green algae collected in the field, placed in 32*45*24 plastic incubators, and cultured and propagated in the greenhouse.

[0056] Test agents: 98% rimsulfuron-methyl TC, 96% propargyl oxadiazone TC and 95% promazone TC.

[0057] Test single dose and dose setting: rimsulfuron-methyl (code A): 30, 52.5 and 75ga.i / hm2 (codes are A1~A3 respectively); propargyl oxadiazone (code B): 48, 72 and 95ga. i / hm2 (numbers B1~B3 respectively); proturazine (number C): 300, 600 and 900ga.i / hm2 (numbers C1~C3);

[0058] Mixing and proportioning of test agents: rimsulfuron-methyl (No. A1~A3), propargyl oxadiazone (No. B1~B3) and promethazin (No. C1~C3), each dose was mixed into 27 compound treatments .

[0059] Refer to "Pesticide Indoor Biochemical Determination Test Guidelines for Herbicides Part 10: Photosynthetic Inhibito...

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PUM

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Abstract

The invention relates to a paddy field weeding composition and application thereof. The weeding composition contains three effective components of, by mass, 1 part of orthosulfamuron, 0.6-2.4 parts of oxadiargyl and 5-20 parts of prometryn, and the sum of mass percents of the three effective components ranges from 2% to 75%. Compared with a single dosage or a binary compound composition which has the same effective components, the synergistic effect of the weeding composition is obvious, the weeding spectrum is effectively extended, the dosage of the effective components is reduced simultaneously, and the safety to crops is improved. The weeding composition is suitable for preventing and killing most graminaceous, broadleaf and cyperaceae weeds in a paddy field and specially has the control effect on duckweed, spirogyra, green algae which cause severe damage in paddy field of partial areas, and the weeding composition is safe to rice.

Description

technical field [0001] The invention relates to a paddy field herbicide composition and its application. In particular, it relates to a herbicidal composition compounded by three active ingredients of rimsulfuron-methyl, propargyl oxadiazone and promethazin, which belongs to the technical field of pesticides. Background technique [0002] Orthosulfamuron, chemical name 1-(4,6-dimethoxypyrimidin-2-yl)-3-[2-(dimethylcarbamoyl)phenylaminosulfonyl]urea, a Sulfonylurea herbicides can be absorbed by weed leaves and roots, and prevent the synthesis of branched-chain amino acids in plants through the acetolactate synthase (ALS) of weeds, thereby preventing the synthesis of weed proteins and stopping the division of weed cells , and finally the weeds die. It can be used to control barnyardgrass, sedge and some broad-leaved weeds in paddy fields. [0003] Oxadiargyl, chemical name 5-tert-butyl-3-(2,4-dichloro-5-(propargyloxy)phenyl-)-1,3,4-oxadiazole- 2-(3H)-ketone is a new type o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/36A01N43/824A01N43/70A01P13/00
CPCA01N47/36A01N43/70A01N43/82A01N2300/00
Inventor 徐雅飞陈丰喜范伟赠卓加雄
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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