Weeding composition containing pyroxasulfone and aclonifen
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A technology of herbicidal composition and pyrazafen, which is applied to herbicides, algicides, biocides, animal repellents, etc., to achieve the effects of reducing pollution, reducing costs, and reducing dosage
Inactive Publication Date: 2017-11-03
上海虎印实业有限公司
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[0005] Some literatures have reported the herbicidal composition containing aclofen, pyraclofen and sulfenazole, for example, the patent CN104869823A describes a synergistic herbicidal composition containing aclofen, sulfenazole and sulfenazole , used to control unwanted vegetation in crop fields, but no literature has disclosed the composition of metazafen-sulfone and aclofen, and there is no relevant biometric data to support the herbicidal composition’s effect on preventing and controlling the vicious weeds brome and knotweed in wheat fields. Synergistic effect of wheat saving
Method used
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Embodiment 1
[0022] Example 1: Preparation of 60% metazachlor sulfone-bifenac emulsifiable concentrate (weight ratio: 1:2)
[0024] Weigh each component according to the above proportion, add the materials together into the reactor mixer according to the proportion, and stir evenly to prepare 60% metazachlor sulfone-aclofenac emulsifiable concentrate.
Embodiment 2
[0025] Example 2: Preparation of 22% metazachlor sulfone-benzofen suspension concentrate (weight ratio: 1:10)
[0027] Each component was weighed according to the above ratio, pre-crushed in proportion, then added to a sand mill for grinding, and then mixed by high shear to prepare a 22% metazachlor sulfone-aclofenac suspending agent.
Embodiment 3
[0028] Example 3: Preparation of 11% metazachlor sulfone-acisofen water-dispersible granules (weight ratio: 10:1)
[0029] Metraclofenac 10%, aclofenac 1%, sticky powder 3%, bentonite 4%, sodium lauryl sulfate 7%, polycarboxylate 5%, kaolin to make up to 100%;
[0030] Each component was weighed according to the above proportioning ratio, dry pulverized, granulated, dried and sieved according to the proportion to prepare 11% metazachlor sulfone-aclofenac water-dispersible granule.
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Abstract
The invention provides a weeding composition containing pyroxasulfone and aclonifen. The effective components of the weeding composition include the pyroxasulfone and the aclonifen, and the weight ratio of the pyroxasulfone to the aclonifen is 1:10 to 10:1. The weeding composition is prevented for preventing and controlling annual grassy weeds, namely wheat field weeds such as bromegrass and aegilops squarrosa. It is shown through a pharmacodynamic test that the weed preventing effect is improved by utilizing the complementarity of the active components of the composition, the shortcomings during single use of a weeding agent is overcome, the delaying of weed resistance is promoted, and the composition is safe to wheat crops and has a better application prospect.
Description
technical field [0001] The invention belongs to the field of agricultural plant protection. More specifically, the present invention relates to a synergistic herbicidal composition comprising pyrazafen and another herbicidal active ingredient, aclofen. Background technique [0002] With the change of farming system and the long-term, single and large-scale application of chemical herbicides in wheat fields, the community structure and dominant species of weeds in wheat fields are also changing. Representatives of vicious weeds that often occur in wheat fields include barley, brome, apricot, candle grass, and ryegrass multiflora. The density of grass weeds is high, and the density of weeds in general fields reaches 50,000-100,000 plants / mu, resulting in a loss of 8-15% of wheat yield, and the re-emergence of wheat fields is as high as 400,000 plants / mu, far exceeding the wheat population In recent years, some fields have even caused plowing and destruction of seeds, especia...
Claims
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Application Information
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