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Weeding composition for rice field

A herbicidal composition and a technology for the composition, applied in the field of pesticides, can solve the problems of large application dose, difficult field resistant weeds, and many times of use, and achieve a broad herbicidal spectrum, significant herbicidal effect, and good control effect. Effect

Inactive Publication Date: 2017-08-04
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 faced by weed control at present, such as large dosage of herbicides, frequent use, serious pesticide residues, difficult to effectively control resistant weeds in the field, and easy to produce resistance.

Method used

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  • Weeding composition for rice field
  • Weeding composition for rice field
  • Weeding composition for rice field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Test name: Determination of indoor activity of oxadiazone propargyl, penoxsulam and promethonin mixed with weeds.

[0033] Purpose of the test: Through the greenhouse pot activity test, the synergistic effect of the mixed use of propargyl oxadiazone, penoxsulam and promethon on weeds is more clear, and further comparisons between the compositions, as well as between the composition and a single agent In order to better illustrate the herbicidal composition of the present invention.

[0034] Test targets: barnyardgrass, bermudagrass and duckweed were selected as test targets.

[0035] Test agents: 96% oxadiazone propargyl TC, 95% penoxsulam TC and 95% promazone TC.

[0036]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.

[0037] Cultivation of test...

Embodiment 1

[0054] 20% propargyl oxadiazone. Penoxsulam. Prometon (3:1:16) wettable powder

[0055] 3 parts by weight of clomazone propargyl, 1 part by weight of penoxsulam, 16 parts by weight of promethazine, 2.0 parts by weight of wetting agent sodium lauryl sulfate, 7 parts by weight of dispersant NNO, and 8 parts by weight of white carbon black Weight, light calcium supplemented to 100 parts by weight, the above components were mixed uniformly and then jet milled to obtain 20% propargyl oxadiazone. penoxsulam. promethazin (3:1:16) wettable powder.

Embodiment 2

[0057] 10% propargyl oxadiazone. Penoxsulam. Prometon (1.8:0.5:7.7) oil suspension

[0058] 1.8 parts by weight of oxadiazone propargyl, 0.5 parts by weight of penoxsulam, 7.7 parts by weight of promethazine, 20 parts by weight of bamboo oil emulsifier YUS-110, 5 parts by weight of bamboo oil dispersant EP60P, 1.5 parts by weight Organic bentonite 838F, 0.2 parts by weight of fumed white carbon black, 10 parts by weight of No. 200 solvent oil, and 100 parts by weight of methylated soybean oil, the above components are sheared and mixed at a high speed by a shearing machine and passed through a sand mill Sand milling was carried out to prepare 10% propargyl oxadiazone. penoxsulam. prometon (1.8:0.5:7.7) oil suspension.

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PUM

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Abstract

The invention discloses a weeding composition for a rice field. The weeding composition is prepared from three effective constituents: oxadiargyl, penoxsulam and prometryn with the mass ration being (1 to 30) to (1 to 20) to (1 to 50), wherein the total mass percentage of the three effective constituents in the composition is 1 to 80 percent. Compared with a single dosage or a binary composite composition with same effective constituents, according to the weeding composition provided by the invention, a synergistic effect is remarkable, a herbicide controlling spectrum is effectively enlarged, meanwhile, the effective constituent dosage is reduced, the safety of crops is improved, and the occurrence and the development of herbicide resistance by using the single dosage are delayed. The weeding composition provided by the invention is applicable for preventing and removing most gramineous weeds and broadleaf weeds in the rice field, especially has a better prevention and control effect on weeds such as antagonism barnyard grasses, golden bristlegrasses, sheathed monochoria herb, duckweeds, spirogyra, pondweeds and difformed galingale herb, is long in lasting period, and is safe to rice.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a herbicidal composition for paddy fields. Background technique [0002] Oxadiargyl, chemical name 5-tert-butyl-3-(2,4-dichloro-5-(propargyloxy)phenyl-)-1,3,4-oxadiazole- 2-(3H)-ketone is a new type of oxadiazole nitrogen-containing heterocyclic herbicide developed by French Rhone Planck Company. Inhibit the activity of protoporphyrinogen oxidase and play a herbicidal role. It can be used in rice, potato, sunflower, vegetables, sugar beets, orchards to control annual grasses, sedges, broad-leaved grasses and some perennial weeds. [0003] Penoxsulam, chemical name 2-(2,2-difluoroethoxy)-N-(5,8-dimethoxy(1,2,4)triazole-(1,5–C )pyrimidin-2-yl)-6-trifluoromethyl-benzenesulfonamide, which belongs to triazolopyrimidinesulfonamide rice field post-emergence broad-spectrum herbicide, absorbed by stems, leaves, buds and roots, and transmitted to xylem and phloem The mer...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01N43/824A01N43/70A01P13/00
CPCA01N43/90A01N43/70A01N43/82A01N2300/00
Inventor 陈丰喜徐雅飞范伟赠王国华
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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