CN104082328A - Post-emergence herbicide for cornfield - Google Patents
Post-emergence herbicide for cornfield Download PDFInfo
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- CN104082328A CN104082328A CN201410299616.3A CN201410299616A CN104082328A CN 104082328 A CN104082328 A CN 104082328A CN 201410299616 A CN201410299616 A CN 201410299616A CN 104082328 A CN104082328 A CN 104082328A
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- prosulfuron
- nicosulfuron
- herbicide
- halosulfuronmethyl
- weed
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Abstract
The invention discloses a post-emergence herbicide for a cornfield. The post-emergence herbicide comprises the following active ingredients in percentage by weight: 0.1%-20% of prosulfuron, 0.1%-30% of halosulfuron-methyl and 0.1%-20% of nicosulfuron, and the balance of pesticide auxiliaries. According to application requirements, the post-emergence herbicide can be prepared into one of dispersible oil suspension, suspension, wettable powder and water dispersible granule; the herbicide has the effect obviously superior to that of each single ingredient on annual weeds in the cornfield, so that the dosage is reduced and the herbicide resistance of the weeds is retarded.
Description
Technical field
The present invention relates to a kind of weed killer herbicide that contains prosulfuron, halosulfuronmethyl and nicosulfuron.
Background technology
Chemical method weeding is one of upper Main Means of controlling weeds of agricultural.In recent years, because some weed killer herbicide kind large area are used separately, caused a lot of weeds to develop immunity to drugs.Meanwhile, grass when weeds occur is complicated mutually, and multiple weeds are mixed raw, and single variety weed killer herbicide is used can not solve farmland weed, all can show defect and limitation in a certain respect.Variety classes weed killer herbicide is mixed, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.
Prosulfuron belongs to sulfonylurea herbicide, can suppress the synthetic of weeds branched-chain amino acid, thereby suppresses the biosynthesis of valine, leucine, isoleucine, stops cell division, and sensitive crop is stopped growing.To corn field annual broadleaf weed, as excellent in preventive effects such as piemarker, amaranth, lamb's-quarters, chickweeds, and its longevity of residure is shorter than other sulfonylurea herbicides.
Halosulfuronmethyl belongs to sulfonylurea herbicide, can suppress the synthetic of weeds branched-chain amino acid, thereby suppresses the biosynthesis of valine, leucine, isoleucine, stops cell division, and sensitive crop is stopped growing.To corn field annual broadleaf weed and sedge weed, as storehouse ear, Datura, artemisiifolia, Amaranthus retroflexus, flowerofanhour root or herb, knotweed, kitchen garden, black nightshade, Cassia tora, lead a cow, the rhizome of nutgrass flatsedge etc. has good control efficiency.
Nicosulfuron belongs to sulfonylurea herbicide.As efficient corn herbicide, nicosulfuron is used after low dosage bud, can effectively prevent and kill off multiple annual gramineous weed in corn field, fraction broad leaved weed and sedge weed.It is absorbed rapidly by leaf and root, and conducts rapidly by xylem and phloem.By suppressing acetolactate synthestase, stop the synthetic of branched-chain amino acid.Use rear weeds and stop growing immediately, 4～5 days young leaves fade, necrosis, and progressively expand to whole plant, plant death in 20～25 days after processing under general condition.Corn has good drug resistance to this medicine, occurs temporary transient chlorisis or slight hypoevolutism, but generally can recover rapidly and the not underproduction after processing.
Variety classes weed killer herbicide is mixed, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.By formulation of pesticide, screening, can effectively improve actual control efficiency, reduce dosage, reduce costs, delay disease, worm, the drug-fast generation of crop smothering, is the important means that agricultural synthesis is administered.The inventor conducts in-depth research the formula screening of prosulfuron, halosulfuronmethyl and nicosulfuron, find that prosulfuron, halosulfuronmethyl and nicosulfuron are mixed, in certain mixed ratio scope, corn field annual weed is had to synergy or summation action, after further study, completed the present invention.
Summary of the invention
The object of the invention is to solve in prior art to farmland weed develop immunity to drugs problem and actual control efficiency poor, provide a kind of efficient, low toxicity, quick-acting is good and the lasting period is long, is conducive to the weed killer herbicide of the corn field weed comprehensive regulation.
Active ingredient prosulfuron and halosulfuronmethyl in Herbicidal combinations of the present invention have been strengthened the control efficiency to broad leaved weed and sedge weed greatly.On this basis, then add nicosulfuron can effectively prevent and treat most of grassy weed.
Technical solution of the present invention: a kind of corn field herbicide after seedling, active ingredient is prosulfuron, halosulfuronmethyl and nicosulfuron, the percentage by weight of prosulfuron in composition is 0.1%～20%, the percentage by weight of halosulfuronmethyl in composition is 0.1%～30%, the percentage by weight of nicosulfuron in composition is 0.1%～20%, and all the other are insecticides adjuvant.
Weed killer herbicide of the present invention can be selected suitable insecticides adjuvant according to well known to a person skilled in the art method, is mixed with the application forms of the applicable agricultural uses such as suspending agent, oil-suspending agent, water dispersible granules, wetting powder.
The insecticides adjuvant that the present invention uses comprises solvent, emulsifier, wetting agent, stabilizing agent, dispersant, thickener, pH adjusting agent, defoamer, antifreezing agent, deionized water, filler etc., be all various auxiliary agents conventional in Pesticide formulation, concrete composition and consumption required simple test to determine according to formula.
The production technology of the various application forms of weed killer herbicide provided by the invention all belongs to existing known technology, does not repeat them here.
Weed killer herbicide provided by the invention, adopts spray method to use conventionally, also can adopt as required other operation techniques of the upper application of agricultural.
Weed killer herbicide provided by the invention, should be used in 3～5 leaf phases of corn field annual weed in use.But, at corn 2 leaves before the phase or 5 leaves after the phase, can not use this Herbicidal combinations, in case there is poisoning in corn.
Weed killer herbicide provided by the invention has following beneficial effect:
1, weed killer herbicide provided by the invention shows obvious synergistic effect in certain ratio range, and the control efficiency of composition is significantly improved than single dose, reduced the using dosage of agricultural chemicals, reduce medication number of times, reduced drug cost, reduced the adverse effect of agricultural chemicals to ecotope.
2, weed killer herbicide provided by the invention, the combination of three kinds of active ingredients, has expanded herbicidal spectrum, and a drug can solve weeds problem, has made up defect and limitation when single dose is used.
3, weed killer herbicide provided by the invention, three kinds of active ingredient mechanism of action are not quite identical, can overcome the shortcoming that long-term single use easily produces resistance, extend the service life of medicament, the comprehensive regulation important in inhibiting to Weed Resistance.
4, weed killer herbicide provided by the invention, rapidly, the lasting period is long in drug effect performance, and use cost is low, easy to use, time saving and energy saving, and it applies huge economic benefit and social benefit.
Embodiment
In order to make object of the present invention, technical scheme and advantage more short and sweet, the present invention describes with following specific embodiment, but the present invention only limits to absolutely not these examples.The following stated is only the good embodiment of the present invention, only for describing the present invention, can not be interpreted as the restriction to scope of the present invention.It should be pointed out that all any modifications of making within the spirit and principles in the present invention, be equal to replacement and improvement etc., within all should being included in protection scope of the present invention.
FORMULATION EXAMPLE 1:12% prosulfuron halosulfuronmethyl nicosulfuron suspending agent.
Above-mentioned formula is pulverized in proportion in advance, then added in sand mill and grind, after high shear mixing, allotment makes 12% prosulfuron halosulfuronmethyl nicosulfuron suspending agent.
FORMULATION EXAMPLE 2:18% prosulfuron halosulfuronmethyl nicosulfuron dispersibles oil-suspending agent.
Above-mentioned formula Central Plains medicine, solvent, emulsifiers dissolve are become to even oil phase; Under high-speed stirred, mixing makes 18% prosulfuron halosulfuronmethyl nicosulfuron and dispersibles oil-suspending agent.
FORMULATION EXAMPLE 3:24% prosulfuron halosulfuronmethyl nicosulfuron wetting powder.
Above-mentioned formula is entered in blender after coarse crushing and mixed in proportion, then after air-flow crushing, make 24% prosulfuron halosulfuronmethyl nicosulfuron wetting powder.
FORMULATION EXAMPLE 4:38% prosulfuron halosulfuronmethyl water dispersible granule of nicosulfuron.
By above-mentioned formula, dry pulverization process, granulation, dry, screening make 38% prosulfuron halosulfuronmethyl water dispersible granule of nicosulfuron in proportion.
Field control effectiveness test embodiment 1: prevent and kill off corn field annual weed field control effectiveness test.
Reagent agent and dispenser dosage:
(1) 12% prosulfuron halosulfuronmethyl nicosulfuron suspending agent (3% prosulfuron: 4% halosulfuronmethyl: 5% nicosulfuron), 115 grams of active ingredients (1#) for per hectare.
(2) 18% prosulfuron halosulfuronmethyl nicosulfurons dispersible oil-suspending agent (4% prosulfuron: 6% halosulfuronmethyl: 8% nicosulfuron), 115 grams of active ingredients (2#) for per hectare.
(3) 24% prosulfuron halosulfuronmethyl nicosulfuron wetting powders (5% prosulfuron: 9% halosulfuronmethyl: 10% nicosulfuron), 115 grams of active ingredients (3#) for per hectare.
(4) 38% prosulfuron halosulfuronmethyl water dispersible granule of nicosulfuron (8% prosulfuron: 15% halosulfuronmethyl: 15% nicosulfuron), 115 grams of active ingredients (4#) for per hectare.
Contrast medicament and dispenser dosage:
(5) 15% prosulfuron wetting powders, 30 grams of active ingredients (5#) for per hectare.
(6) 75% halosulfuronmethyl water dispersible granules, 40 grams of active ingredients (6#) for per hectare.
(7) 8% nicosulfuron oil-suspending agents, 53 grams of active ingredients (7#) for per hectare.
Test site: bamboo plantation village, Ren Shan town, Huidong County, Huizhou.
Subjects and method:
Lady's-grass, green foxtail, kitchen garden, the rhizome of nutgrass flatsedge, lamb's-quarters, in 3～5 leaf phases of corn, be watered 30 liters/mu by this Herbicidal combinations, carries out cauline leaf spraying.
Result of the test: in Table 1, as can be seen from the test results: weed killer herbicide of the present invention reaches more than 89.6% the average preventive effect of corn field annual weed, significantly better than the single dose of contrast, synergistic effect is remarkable, and having expanded herbicidal spectrum, quick-acting and lasting period are obviously better than single dose.Duration of test, there is slight blade spot in corn, within 15 days, recovers afterwards normal.Herbicidal combinations of the present invention, to corn safety, affects without the underproduction.
Table 1, prevent and kill off corn field annual weed field control effectiveness test result (after medicine 20 days).
Claims (3)
1. a corn field herbicide after seedling, it is characterized in that: active ingredient is prosulfuron, halosulfuronmethyl and nicosulfuron, the percentage by weight of prosulfuron in composition is 0.1%～20%, the percentage by weight of halosulfuronmethyl in composition is 0.1%～30%, the percentage by weight of nicosulfuron in composition is 0.1%～20%, and all the other are insecticides adjuvant.
2. a kind of corn field herbicide after seedling according to claim 1, is characterized in that: its formulation is a kind of in suspending agent, oil-suspending agent, wetting powder or water dispersible granules.
3. a kind of corn field herbicide after seedling according to claim 1, is applicable to prevent and kill off corn field annual weed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299616.3A CN104082328A (en) | 2014-06-26 | 2014-06-26 | Post-emergence herbicide for cornfield |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299616.3A CN104082328A (en) | 2014-06-26 | 2014-06-26 | Post-emergence herbicide for cornfield |
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| Publication Number | Publication Date |
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| CN104082328A true CN104082328A (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410299616.3A Pending CN104082328A (en) | 2014-06-26 | 2014-06-26 | Post-emergence herbicide for cornfield |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332608A (en) * | 1998-11-10 | 2002-01-23 | 辛根塔参与股份公司 | Herbicidal composition |
| CN103300039A (en) * | 2013-07-12 | 2013-09-18 | 安徽丰乐农化有限责任公司 | Compounded herbicide for corn seedlings of postemergence |
| CN103355336A (en) * | 2013-07-30 | 2013-10-23 | 河北博嘉农业有限公司 | Prosulfuron compounded corn field herbicide |
-
2014
- 2014-06-26 CN CN201410299616.3A patent/CN104082328A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332608A (en) * | 1998-11-10 | 2002-01-23 | 辛根塔参与股份公司 | Herbicidal composition |
| CN103300039A (en) * | 2013-07-12 | 2013-09-18 | 安徽丰乐农化有限责任公司 | Compounded herbicide for corn seedlings of postemergence |
| CN103355336A (en) * | 2013-07-30 | 2013-10-23 | 河北博嘉农业有限公司 | Prosulfuron compounded corn field herbicide |
Non-Patent Citations (1)
| Title |
|---|
| 除草剂氯吡嘧磺隆的开发 ;易思齐等;《世界农药》;20000131(第01期);全文 * |
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Application publication date: 20141008 |