CN1147897A - Herbicide for corn field - Google Patents
Herbicide for corn field Download PDFInfo
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- CN1147897A CN1147897A CN 96109751 CN96109751A CN1147897A CN 1147897 A CN1147897 A CN 1147897A CN 96109751 CN96109751 CN 96109751 CN 96109751 A CN96109751 A CN 96109751A CN 1147897 A CN1147897 A CN 1147897A
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- corn
- herbicide
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- weed
- corn field
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Abstract
This herbicide comprises atrazine, yanmihuanglong, adhesive etc. with definite proportion and is produced by blending in a double shell enamel reactor. This product is a suspensoid mixture with suspension rate 90%. pH 5.5 to 9.0. It is applied by spraying on weeds, effective rate is higher than 90%.
Description
The present invention relates to the pesticide that agriculture plant protection is used, especially be one kind and plant after the emergence of corn and impose on a kind of weed killer herbicide that does not harm corn growth in the corn field in the phase specially at the cauline leaf of corn growth,
Corn is the staple food crop of China, only corn area in Henan Province's reaches more than 3,500 ten thousand mu, our province is located in Central Plains, the weeds kind is many, according to investigations, our province and other brother economize farmland weed and add up to kind more than 700, and wherein broadleaf weed has kind more than 500, monocotyledon weed has kind more than 200, belongs to 348 respectively and belongs to 88 sections.In different regions, because of physical features, landforms, different different sociales and the subdominules of having formed of environmental condition.Wherein corn field weed mainly contains: flower, Siberian cocklebur, iron amaranth, humid euphorbia, Armstrong, morning glory, humulus grass, knotweed, piemarker, wild watermelon, birthwort, wild muskmelon seedling, garden sorrel, crow are executed in wild amaranth (recessed amaranth, anti-skill amaranth, thorn amaranth), lamb's-quarters, kitchen garden, stramonium, Celosia argentea, black nightshade, bitter duty, wartwort, field
Weeds such as the certain kind of berries, puncture vine, daghestan sweet clover, clover, hemlock chervil, bluish dogbane, wild country Huang, field thistle, dayflower, chenopodium glaucum linn, committee's mound grass; Grassy weed mainly contains more than 80 kind of weeds such as the rhizome of nutgrass flatsedge of green foxtail, barnyard grass grass, eleusine indica, lady's-grass, thrush, moleplant seed and sand-grass section.In these weeds, having approximately about 95% is annual weed, and about 5% is perennial weed.No matter but be perennial weed or annual weed, specific to a certain place, the sociales of weeds also just have difference.Big with interior weed seed storage at topsoil, summer sowing corn growth rainfall in season is abundant, simultaneously corn general planting mode, unit are is interior because the plant rareness, the ground voidage is big, and sunlight, fertilizer, moisture abundance help the growth of weeds very much, the weeds generating capacity is very big, meet rainy season in the three summer jobs in rush season, can not in time manage, often form serious farmland running to weeds, because of the farmland running to weeds underproduction 10～20 of causing harm, weigh 50% throughout the year.
The present weeding of corn field has two kinds of forms, and a kind of is artificial weeding, accounts for 30% of management recruitment, every intertillage once, the grass-seed of topsoil bottom stirs upper strata 3-5cm, the corn of causing harm again just is unearthed.Another kind of chemical weed control, though begun to have use the sixties, being subjected to limitations of all sorts of conditions can not promote.Weed killer herbicide uses dual mode: a kind of broadcast the back seedling on being before, spraying time is short, about 5 days operating periods, corn a large amount of poisoning will occur once emerge, weeding also will be subjected to the soil moisture content restriction before the seedling, soil moisture content difference herbicidal effect extreme difference, or do not have herbicidal effect.Present many local no-tillage systems of carrying out, the sowing of iron stubble, herbicides for before-seedling stage does not almost have effect to the weeds that emerged, loses the meaning of using weed killer herbicide, and weeds still can be caused the serious underproduction of corn, hinder seedling in a large number if cause with tractor ploughing and weeding weeding.The 2nd, postemergence weed control, carry out postemergence weed control at corn field, the kind specificity is strong, for example atrazine is at cornfield weeding, though effective, every mu of ground surpasses 200mI (active ingredient 80g), residual many in soil, time is long, crops such as succession crop wheat are just had poisoning, and the corn field that has limited corn, wheat two ripe planting patternss uses.It is higher that also performance is selected in some weeding, only kills broadleaf weed and do not kill monocotyledon weed, and promptly the grass spectrum is narrow extremely, uses at corn field still to be restricted.The genus steriland herbicide that also has, as: Gramoxone etc., use one not note at corn field, will make corn be subjected to serious poisoning.
The objective of the invention is to avoid the weak point in the above prior art, and the weed killer herbicide that provides a kind of corn growing season in the fields to use.This herbicide for corn field possesses broad weed-killing spectrum, drug effect height, lasting period length, also lower to succession crop safety and cost.
Formation of the present invention:
Material is composite mixes by atrazine, nicosulfuron, sticker, water etc. in the present invention.This herbicide for corn field is a kind of aqueous suspension agent.
Below all compositions is done an explanation:
1, atrazine (commercially available prod)
Adopted name atrazine
Different amido-the 1,3,5-triazines of chemical name 2-chloro-4-ethylamino--6-
Other title atrazine
Structural formula:
Molecular formula and molecular mass:
C
8H
14CIN
5 215.69
The pure product of physicochemical property are colourless crystallization, and fusing point 173-175 ℃, vapour pressure is 3.0 * 10 in the time of 20 ℃
-7Millimetres of mercury, in the time of 25 ℃ in water solvability be 33ppm, be 360ppm in the nalka, be 12000ppm in the diethyl ether, be 18000ppm in the methyl alcohol, 28000ppm in the ethyl acetate is 52000ppm in the chloroform, is 183000ppm in the dimethyl sulfoxide (DMSO).Former powder is a white powder, and normal temperature was stored 2 years down, and it is constant for active constituent content, and atrazine is more stable in subacidity or alkalescence medium, can be by stronger acid and stronger basic hydrolysis under higher temperature.
Toxicity is by China's pesticide toxicity grading criteria, and atrazine belongs to low toxicity herbicide.Former powder rat acute per os LD
5Be 1780 milligrams/kilogram, acute to rabbit through skin LD
5It is 7500 milligrams/kilogram.In test dose, teratogenesis, carcinogenic test are negative, are 1000ppm to rat chronic test per os action-less dose.
2, nicosulfuron (commercially available prod)
Chemical name: 2-(4,6-dimethoxypyridin-2-Ji Anjijia mills amino sulphur and mills)-N, N-diformazan vitamin PP trade name: beautiful agricultural happy structural formula:
Molecular formula: C
15H
18N
6O
3S molecular weight: 410.4 physical and chemical performances: this product is a clear crystal, 172～173 ℃ of fusing points.Fusion property: water 400mg/kh (pH
5Buffering.Final pH 5.01), go up 20g/kg (pH7 buffering, final pH 6.85), 39.2g/kg (pH9 buffering, final pH 8.8), acetone 18g/kg, acetonitrile 23g/kg, chloroform, dimethyl formamide 65g/kg, carrene 160g/kg, ethanol 4.5g/kg, hexane 2.0g/kg, toluene 70g/kg.K
ow0.44(pH5)、0.017(pH7)、0.01(pH9)。Be acid, pH43.6 (25 ℃).
Toxicity
Male chmice acute per os LD
5＞5000mg/kg has minimal irritation to the lagophthalmos eyeball, and mouse skin is not had hypersensitivity.The 28d feeding experiment has no adverse effect (dosage reaches the 30g/kg feed) to large and small mouse, and the Salmonella reversion test result shows no mutagenicity.Carp LC
50(96h)＞10mg/L.
3, sticker (auxiliary agent)
(1), N-2 number (commercially available prod)
Chemical name: polyacid (alkanamine polyoxy ethyl ether) sulfonated ester, N-2 number is China Shen Nan company product, that is: chemical design institute, Shenyang and the co-production of Nantong chemical company, sale.
(2), MS-8 type (commercially available prod)
Production unit: No. 48, healthy road, Luoyang City, Mei Aiping
(3), bay nitrogen humulone (commercially available prod)
Physicochemical property: do not have or little yellow clarification oily liquids, have the infiltration facilitation,
Production unit: Nanjing dragon's pool Fine Chemical Works
(4), calcium dodecyl benzene sulfonate (commercially available prod)
(5), xanthan gum (XG)
It is a kind of: polymeric carbohydrate
Production unit: Jinhu County, Jiangsu Province xanthans factory
This herbicide for corn field, it is a kind of: emerge in the fields back and be applied to weed killer herbicide in the corn field in the phase specially of corn at the cauline leaf of corn growth, use this weed killer herbicide, sprayable in the corn field, drug effect is harmless to the corn normal growth, harmless to back stubble crop growth, but can the weeds in the corn field be killed.
The composition of this herbicide for corn field, proportioning (percentage by weight: %) be:
Atrazine 20-30
Nicosulfuron 0.4-2.0
Sticker 5.0-15
Water≤75
Used commercially available sticker can be N-2 number, can be the MS-8 type, can be bay nitrogen humulone, can be calcium dodecyl benzene sulfonate, also can be xanthan gum.
The production method of this herbicide for corn field is:
1), respectively atrazine, nicosulfuron are joined in the commercially available double-deck enamel reaction still by proportional quantity, this reactor be normal pressure, sealing, 〉=need not heat 10 ℃ the time, stir and be per minute 70-80 time, the time is 40-50 minute,
2), water is joined in the commercially available sticker, mixes, stirs, by proportional quantity
3), with 2) in mixture join in the reactor, and through stirring once more-70-80 time/minute, the time is 40-50 minute, and becomes the liquid composite mixture of uniform aqueous suspension, again through chemically examine, qualified after packing, packing.
This herbicide for corn field, its suspensibility are 90%, and pH value is 5.5-9.0.
Effect characteristics this product is to inhale in the selectivity to pass parental type corn growing season weed killer herbicide, promptly uses (3-6 sheet leaf) to use behind the bud.This kind has the characteristics of triazine herbicide and sulphonyl urine class weed killer herbicide, after spraying, absorb by root and cauline leaf, be transmitted to meristematic tissue and the leaf portion of plant rapidly, interference photosynthesis causes death weeds, in resistance crop bodies such as corn, decomposed the generation innocuous substance by the corn ketolase, thereby to crop safety.It is strong to kill grass effect and selectivity, the activity of weeding height.The composition of atrazine is water-soluble big, and rainy water wash has inhibitory action to than deep layer to some deep-rootedness weeds, can be in soil by microbial decomposition, and the longevity of residure is looked factor affecting such as dosage, the soil texture, generally is about half a year.Still side chain amino acid synthetic inhibitor simultaneously, it is synthetic to suppress side chain amino acid, makes the side chain amino acid of " usefulness " weeds, can not synthesize, and weeds are hungry and extremely.Corn contains the effect of the enzyme of catabolic enzyme, pharynx Sulfometuron Methyl, in soil, and can be by microbial decomposition.
Using method this product is a herbicide for corn field, is mainly used in to prevent and kill off annual gramineous weed and broad leaved weed, and some perennial weed is also had certain inhibitory action.
Cornfield weeding; corn 3-6 blade or after; weeds carry out foliar spray in the 2-4 blade phase and handle; can effectively prevent and kill off wild amaranth (and skill amaranth; recessed amaranth; the thorn amaranth); lamb's-quarters; kitchen garden; stramonium; Celosia argentea; black nightshade; Siberian cocklebur; bitter duty; piemarker; Canada's paulin; 1 year paulin; ground is continuous; Armstrong; morning glory; the humulus grass; flowerofanhour root or herb; wild muskmelon seedling; birthwort; garden sorrel; two Habitat knotweeds; puncture vine; daghestan sweet clover; clover; hemlock chervil; bluish dogbane; the wild country Huang; field thistle; dayflower; grayish green multitude; committee's mound grass; speedwell; green foxtail; gold dog tail; green dog tail; the barnyard grass grass; eleusine indica; lady's-grass; thrush; Semen Euphorbiae; sand-grass section weeds etc.; integrated control effect reaches more than 95%, to the malignant weed piemarker of the difficult control of corn field; morning glory; the humulus grass; preventive effects such as sedge weed reach more than 90%.According to Institute of Plant Protection, academy of agricultural sciences, Henan Province, the areas formerly flooded by the Huanghe River institute of agricultural sciences, look ground such as the county institute of agricultural sciences and make the closed test integrated control effect and reach more than 95%.
Good effect of the present invention:
1, broadcasts back weeding in seedling stage for corn field and increased a new varieties weed killer herbicide, this weed killer herbicide can also be in corn field be used in vegetative period of corn, and its drug effect herbicidal effect is good and harmless to the normal growth of corn, also improved the safety coefficient to back stubble crop growth.
2, its all raw material is easy to get this herbicide for corn field when producing, tooling device is uncomplicated, production technology is easy, product cost is low.
Claims (3)
1, a kind of herbicide for corn field, it is a kind of: emerge in the fields back and be applied to weed killer herbicide in the corn field in the phase specially of corn at the cauline leaf of corn growth, it is characterized in that: this weed killer herbicide is the liquid composite mixture of aqueous suspension, and the percentage of its composition and proportioning is:
Atrazine: 20-30
Nicosulfuron: 0.4-2.0
Sticker: 5-15
Water :≤75
2, according to the described foliar herbicide of claim 1, it is characterized in that said commercial binder, can be N-2 number, can be the MS-8 type, can be bay nitrogen humulone, can be calcium dodecyl benzene sulfonate, also can be xanthan gum.
3, foliar herbicide according to claim 1 is characterized in that the production method of this weed killer herbicide is:
1), respectively atrazine, nicosulfuron are joined in the commercially available double-deck enamel reaction still, by proportional quantity
2), press proportional quantity water mixed with commercially available sticker, stir,
3), the mixture in 2 is joined in the commercially available double-deck enamel reaction still, and process: stir be that per minute 70-80 time, time are 40-50 minute after, and become the composite mixture of uniform aqueous suspension liquid state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96109751 CN1147897A (en) | 1996-09-13 | 1996-09-13 | Herbicide for corn field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96109751 CN1147897A (en) | 1996-09-13 | 1996-09-13 | Herbicide for corn field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1147897A true CN1147897A (en) | 1997-04-23 |
Family
ID=5120577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96109751 Pending CN1147897A (en) | 1996-09-13 | 1996-09-13 | Herbicide for corn field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1147897A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312998C (en) * | 2002-07-22 | 2007-05-02 | 巴斯福股份公司 | Synergistically acting herbicidal mixtures |
| CN100384331C (en) * | 2004-07-21 | 2008-04-30 | 河北宣化农药有限责任公司 | Herbicide composition contg. micosulfuron and profluazone |
| CN100479660C (en) * | 2007-10-09 | 2009-04-22 | 河北省农林科学院粮油作物研究所 | Nicosulfuron terbuthylazine compound weedicide for corn field |
| CN101926349A (en) * | 2010-09-13 | 2010-12-29 | 尹小根 | Weeding composition containing amidosulfuron and atrazine |
-
1996
- 1996-09-13 CN CN 96109751 patent/CN1147897A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312998C (en) * | 2002-07-22 | 2007-05-02 | 巴斯福股份公司 | Synergistically acting herbicidal mixtures |
| US7521395B2 (en) | 2002-07-22 | 2009-04-21 | Basf Aktiengesellschaft | Synergistically acting herbicidal mixtures |
| CN100384331C (en) * | 2004-07-21 | 2008-04-30 | 河北宣化农药有限责任公司 | Herbicide composition contg. micosulfuron and profluazone |
| CN100479660C (en) * | 2007-10-09 | 2009-04-22 | 河北省农林科学院粮油作物研究所 | Nicosulfuron terbuthylazine compound weedicide for corn field |
| CN101926349A (en) * | 2010-09-13 | 2010-12-29 | 尹小根 | Weeding composition containing amidosulfuron and atrazine |
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