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A kind of flufenacet-terbuthylzine compound cornfield herbicide
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A technology of flufenoxol and terbutin, which is applied in the field of pesticides, can solve problems such as low control effect of grass weeds and broad-leaved weeds, achieve obvious synergistic effect, improve control effect, and expand herbicidal spectrum. Effect
Active Publication Date: 2018-07-24
中科荣威生物药业(河北)集团有限公司 +1
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Problems solved by technology
Terbutyzine has a good effect on most of the annual broad-leaved weeds, such as retroflexus, purslane, carp sausage, black nightshade, quinoa, etc., but the control effect on gramineous weeds is significantly lower than that on broad-leaved weeds Weed Control Efficiency (Li Guangsong. Research on the Application of Terbutyzine in Summer Corn Fields in Shandong Province. Master Thesis of Shandong Agricultural University. April 2005)
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Embodiment 14
[0051] Example 1 40% Flufenacet-Terbuthylazine Suspension Concentrate (5:3)
[0052]
[0053]
[0054] The process steps are: according to the above formula, take flufenacet and terbutyzine raw materials, dry, weigh and pulverize them, then put the raw drugs, dispersant, wetting agent, viscosity modifier, antifreeze, etc. into the preparation kettle in sequence , After being fully mixed with a mixer, it is initially dispersed with a high-speed shearing machine, and then ground in a sand mill until the particle size of the active ingredient reaches 2 μm to 3 μm. After passing the quality inspection, it is the finished product.
Embodiment 2
[0055] Example 2 60% flufenacet-terbuthine water dispersible granules (5:1)
[0056]
[0057] The process steps are: according to the above formula, take flufenacet and terbuthyrazine, dispersants, wetting agents, disintegrants, defoamers, binders and other auxiliary agents and a small amount of fillers, through wet or dry method After crushing and making it micronized, it can be granulated by spray drying, fluid bed, extrusion, pan granulation and other processes to obtain water dispersible granules.
Embodiment 3
[0058] Example 3 70% flufenacet-terbuthylzine wettable powder (5:2)
[0059]
[0060] The process steps are: weigh the materials according to the above formula, mix according to the principle of first more and then less, first heavy and then light, first filler and then additives, and use a pin mill to crush the material so that the particle size of the material is between 150 and 200 mesh. It is further crushed by a jet mill, and then mixed in two stages by a cyclone dust collector and a pulse bag filter.
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Abstract
The invention discloses a cornfield herbicide composition. The herbicide is prepared from active components of flufenacet and terbuthylazine, wherein the weight of the active components is 40 percent-80 percent of the total weight of the composition, and the weight ratio of the flufenacet to the terbuthylazine as the active components is 5 : (1 to 5). The herbicide can be prepared into a suspending agent, wettable powder or water dispersible granules. The herbicide is used for preventing and removing annual gramineous weeds and broadleaf weeds, can reduce pollution to underground water, has good compatibility with environment, and has the advantages of safety to corn, low toxicity and high efficiency, wide herbicide controlling spectrum and the like.
Description
technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a herbicide for cornfields, more specifically, it relates to a herbicide for cornfields compounded with flufenacet-terbuthyzine. technical background [0002] At present, the main agents used for soil treatment for weed control after sowing and pre-emergence of corn are alachlor, acetochlor, metolachlor, propachlor, atrazine, metrizone, etc. preparation. Among them, acetochlor, atrazine and acetoheratine are herbicides that are widely used in corn fields in my country. Although acetochlor has a good control effect on annual grasses and some annual broad-leaved weeds, such as barnyardgrass, quinoa, retroverted amaranthus, purslane, etc. The control effect of millet and others is poor, and it is almost ineffective against Paomayang (Zhao Wei. Efficacy test of different herbicides for controlling weeds in corn fields. Plant Protection. August 2011). Moreover, acetochlor has ...
Claims
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Application Information
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