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Pyroxasulfone-containing synergistic weeding composition, and application thereof in control of wheat field weeds

A herbicidal composition, a technology of sulfofenazone, applied in the directions of application, herbicide, algicide, biocide, etc., can solve the problems of safety risk, uncontrollable harm, and occurrence of herbicide phytotoxicity, etc., Achieve the effect of reducing environmental pressure, significantly synergistic effect, and stabilizing the effect of systemic absorption and conduction

Inactive Publication Date: 2018-05-11
JINAN KESAI AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, weeding in wheat fields is faced with many problems: 1. Due to the long-term use of the broad-leaved weeds Tribesulfuron-methyl and Bensulfuron-methyl, the resistance of the dominant broad-leaved weeds Artemisia solani and shepherd’s purse in wheat fields is common, and some areas have reached 200- 1500 times the level of resistance, the original medicine can no longer control its harm
2. The succession of weed communities in the field is becoming more and more serious due to cross-regional operation of farming machinery and seed allocation, etc., some grasses and some malignant weeds gradually become dominant weeds, such as knotty wheat, multiflora ryegrass, and large spike Look at Mai Niang, Zhu Yangyang, etc.
3. Herbicide injury occurs from time to time
There is a certain risk of the safety of pyraconazole to some dicotyledonous crops such as cotton, soybean, sunflower, rapeseed and other Brassica

Method used

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  • Pyroxasulfone-containing synergistic weeding composition, and application thereof in control of wheat field weeds
  • Pyroxasulfone-containing synergistic weeding composition, and application thereof in control of wheat field weeds
  • Pyroxasulfone-containing synergistic weeding composition, and application thereof in control of wheat field weeds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Formulation example 1: 39% metazachlor sulfone • florasulam (36:3) suspension concentrate

[0031]Put 360 grams of metazazone sulfone, 30 grams of florasulam, 25 grams of alkylphenol polyoxyethylene ether phosphate, and 18 grams of polystyrene phenol polyoxyethylene ether phosphate into the mixing tank, stir and mix Pass colloid mill after being uniform, then enter sand mill for sand grinding, then add 200 grams of 1% xanthan gum solution, 14 grams of sodium benzoate, 30 grams of ethylene glycol, 323 grams of deionized water, and stir evenly in a shearing machine, namely A 39% suspension concentrate of metazachlor sulfone and florasulam (36:3) was obtained.

Embodiment 2

[0032] Formulation example 2: 40% metazazone sulfone • florasulam (38:2) wettable powder

[0033] Put 380 grams of metazazone sulfone, 20 grams of florasulam, 30 grams of white carbon black, 490 grams of calcined kaolin, 30 grams of sodium lauryl sulfate, and 50 grams of naphthalenesulfonate formaldehyde condensate into the conical mixing In the machine, mix for 30 minutes to make the material mix evenly, and crush it to 325 mesh through the airflow mill, and then mix the material for 30 minutes in a gravity-free mixer to obtain 40% metazachlor sulfone florasulam (38: 2) Wettable powder.

Embodiment 3

[0034] Formulation example 3: 84% metazachlor sulfone·flusulam (82:2) water dispersible granules

[0035] Put 820 grams of metazafen, 20 grams of florasulam, 100 grams of polycarboxylate, and 60 grams of sodium lauryl sulfate into the conical machine in turn, stir for 30 minutes to mix the materials evenly, and then crush them by airflow Machine, the material fineness passes through 325 mesh sieve. Add about 150 ml of water and mix it into a wet material. Make 20-mesh granules by wet method, dry them in a tray in a hot air oven at about 45°C for 2 hours, after drying, pass through a 18-mesh sieve for granulation, and obtain 84% Metrazazone sulfone · diflusulam (82: 2) water dispersible granules.

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Abstract

The invention relates to a pyroxasulfone-containing synergistic weeding composition, and an application thereof in control of wheat field weeds, belongs to the technical field of pesticides, and discloses a weeding composition being safe to wheat and having a significant control effect on malignant weeds and resistant weeds in the wheat field. The effective components of the weeding composition are pyroxasulfone and florasulam, and a weight part ratio of the pyroxasulfone to the florasulam in the composition is (9-99):1, and preferably (19-59):1. Different auxiliary materials can be added to the composition in order to prepare missible oil, a suspoemulsion, a suspension, a wettable pulvis or a water dispersible granule. The weeding composition has obvious synergistic effects, can realize application of the composition to weeds, has a long persistent period, can effectively control wheat field weeds emerging in different stages, including various resistant weeds, such as Sclerochloa kengiana, Lolium multiflorum Lamk., resistant flixweed and resistant bedstraw, has a higher activity than existing most wheat herbicides, and is an efficient and safe wheat field weeding composition.

Description

technical field [0001] The invention belongs to the technical field of processing and application of pesticide preparations, more specifically, the invention relates to a synergistic herbicidal composition containing pyrazafen and the application of the composition to control vicious weeds and resistant weeds in wheat fields. Background technique [0002] At present, weeding in wheat fields is faced with many problems: 1. Due to the long-term use of the broad-leaved weeds Tribesulfuron-methyl and Bensulfuron-methyl, the resistance of the dominant broad-leaved weeds Artemisia solani and shepherd’s purse in wheat fields is common, and some areas have reached 200- With a resistance level of 1500 times, the original medicine can no longer control its harm. 2. The succession of weed communities in the field is becoming more and more serious due to cross-regional operation of farming machinery and seed allocation, etc., some grasses and some malignant weeds gradually become domina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N43/80A01P13/00
CPCA01N43/90A01N43/80A01N2300/00
Inventor 王铭孙冬李宏元谢翔宇赵守明张彩王慧君
Owner JINAN KESAI AGROCHEM
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