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Compound weeding composition

A herbicidal composition and composition technology, applied in the direction of herbicides, algicides, biocides, animal repellents, etc., can solve the problems of ineffective control of heterosedge hazards, farmers' economic losses, and heterogeneous sedge control. Reduced efficacy and other issues, to achieve the effects of delaying weed resistance, broad herbicidal spectrum, and reducing the frequency of application

Inactive Publication Date: 2016-04-20
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, my country has registered herbicides such as bentazone, dimethyltetrachlor, chlorpyrazosulfuron-methyl, pyrazosulfuron-methyl, bensulfuron-methyl, bisfluben, penoxsulam and other herbicides. The control effect of the sedge is also greatly reduced, and the damage of the special-shaped sedge to the rice cannot be effectively controlled, so that the farmers suffer huge economic losses.

Method used

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  • Compound weeding composition
  • Compound weeding composition
  • Compound weeding composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Pretilachlor 3.2%, Oxyfluorfen 0.7%, Oxadiazone 1.1%, Promethazine 2.1%, Sodium a-alkenyl sulfonate (AOS) 1%, Sodium lignosulfonate (REAX82P) 5%, Glucose 5%, white carbon black 5%, kaolin balance. Weigh pretilachlor in advance according to the above ratio, absorb it with white carbon black and let it stand for 24 hours, mix the above other ingredients uniformly according to the above ratio, and pass through airflow pulverization to make the average particle size of the material less than 5 microns, add water and knead evenly, transfer Granulate in granulation equipment, and then dry to obtain 5% pretilachlor · oxyfluorfen · oxadiazone granules.

Embodiment 2

[0030] Pretilachlor 4.1%, Oxyfluorfen 1.3%, Oxadiazone 2.1%, Promethazine 2.3%, Sodium Lauryl Sulfate 1%, Naphthalene Sulfonate Dispersant (MORWETD425) 5%, Polyethylene Dioxide Alcohol 40005%, white carbon black 5%, attapulgite balance. Weigh pretilachlor in advance according to the above ratio, absorb it with white carbon black and let it stand for 24 hours, then mix the other ingredients uniformly according to the ratio, and crush them by air flow, so that the average particle size of the material is less than 5 microns, add water and knead evenly, and move to The granules are granulated in the granulation equipment, and the pretilachlor · oxyfluorfen · oxadiazone granules can be obtained after drying.

Embodiment 3

[0032] Pretilachlor 3.5%, Ethoxyfluorfen 0.9%, Oxadiazone 1.3%, Promethazine 2.5%, Fatty Alcohol Polyoxyethylene Ether Sodium Sulfate 1%, Polycarboxylate Dispersant (TERSPERSE2700) 5%, Corn Starch 5%, white carbon black 5%, diatomaceous earth balance. Weigh pretilachlor in advance according to the above ratio, absorb it with white carbon black and let it stand for 24 hours, then mix the other ingredients uniformly according to the ratio, and crush them by air flow, so that the average particle size of the material is less than 5 microns, add water and knead evenly, and move to The granules are granulated in the granulation equipment, and the pretilachlor · oxyfluorfen · oxadiazone granules can be obtained after drying.

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Abstract

The invention discloses a compound weeding composition. The compound weeding composition is prepared from pretilachlor, oxyfluorfen, oxadiazon and fenclorim, wherein the weight ratio of pretilachlor to oxyfluorfen to oxadiazon is (28-36):(5-9):(7-15), and the weight ratio of pretilachlor to fenclorim is (1-2):1. The compound weeding composition is convenient to apply, low in cost, capable of effectively reducing the using amount and reducing use frequency, wide in weeding spectrum, capable of effectively delaying weed herbicide resistance and ideal in weeding effect.

Description

technical field [0001] The invention belongs to the field of chemical pesticides, in particular to a compound herbicide composition for annual weeds and resistant biological weeds in paddy fields. Background technique [0002] Pretilachlor (Pretilachlor) belongs to 2-chlorinated acetanilide herbicides, selective pre-emergence herbicides, cell division inhibitors. Weeds absorb pesticides through hypocotyls and coleoptiles, interfere with protein synthesis, and have indirect effects on photosynthesis and respiration of weeds. Generally, through soil treatment, it has certain effects on weeds such as barnyardgrass, duckweed, sedge, motherwort, cow felt, Ci algae, and firefly rushes in paddy fields, but with high doses of chemical herbicides and repeated selection At present, the control effect of this compound on resistant weeds such as resistant biotype heterosexual sedges shows a significant downward trend, and often 15-20 days after application, it is necessary to supplemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/824A01N37/22A01N33/22A01N25/32A01N25/14A01P13/00
CPCA01N43/82A01N25/14A01N25/32A01N33/22A01N37/22A01N2300/00
Inventor 范伟赠祁月月陈涛康家树陈丰喜
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI