CN104782646A - Disposable compound post-emergence herbicide for rice - Google Patents
Disposable compound post-emergence herbicide for rice Download PDFInfo
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- CN104782646A CN104782646A CN201510201216.9A CN201510201216A CN104782646A CN 104782646 A CN104782646 A CN 104782646A CN 201510201216 A CN201510201216 A CN 201510201216A CN 104782646 A CN104782646 A CN 104782646A
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- cyhalofop
- butyl
- grass amine
- acyl grass
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Abstract
The invention discloses a disposable compound post-emergence herbicide for rice. The herbicide consists of active ingredients, namely cyhalofop-butyl and ipfencarbazone, wherein the weight ratio of cyhalofop-butyl to ipfencarbazone is 1:(1-5). According to the compound herbicide, annual gramineous weeds such as leptochloa chinensis and barnyard grass in a rice field can be prevented and controlled, cyperaceous weeds and part of broadleaf weeds can also be prevented and controlled, remarkable herbicidal effects are achieved, remarkable synergistic effects particularly on leptochloa chinensis and cyperaceous weeds are also achieved, influence on succession crops is eliminated, the using amount per mu is reduced, the agricultural cost is greatly reduced, and the herbicide is ideal.
Description
Technical field
The present invention relates to technical field of pesticide, disposable complex weedicide after being specifically related to a kind of rice seedlings.
Background technology
Paddy rice is not only the topmost cereal crops of China, one of Ye Shi world staple food crop.Nearly half population, comprises the population in almost whole East Asia and Southeast Asia in the world, and be all take rice as food, its plantation is throughout each continent except the South Pole.Eighties of last century late period, View of World Rice annual production average out to about 4,000 hundred million kilograms, cultivated area about 1.45 hundred million hectares.China's rice growing area accounts for 1/4 of national cereal crops, and every year about more than 3,500 ten thousand hectares, it is over half that output then accounts for total grain.So paddy rice no matter cultivated area and output, all ranks first in China cereal crops.The rice field of all rice workspaces of China, always has a large amount of weeds to occur, and wherein medium crop smothering area accounts for more than 46% of total cultivated area, and serious injured area, more than 11.5%, loses more than 200 hundred million kilograms, grain thus every year.
Along with the development of agricultural cience and farming techniques, chemical herbicide apply as saving of labor, save time, one of cost-effective strong well stimulation.The usage ratio of current herbicide for paddy field almost reaches 100%, and its dosage is very large.At present, rice herbicide kind is more, and wherein representative have the third careless amine, butachlor, dichloro quinolinic acid, the benthiocarb of preventing and kill off grassy weed and prevent and kill off the bensulfuron-methyl, pyrazosulfuron etc. of broad leaved weed and sedge weed.These weed killer herbicides are close weed killer herbicide before bud substantially, undesirable to the weeds effect of having emerged, and to paddy field seedling rear defence except the medicament kind of annual weed is also few.
Cyhalofop-butyl belongs to aryloxyphenoxypropionic class weed killer herbicide, and for paddy field selective herbicidal, but it can only do cauline leaf process, and bud pre-treatment is invalid.Cyhalofop-butyl is efficient to moleplant seed, has certain preventive effect, also can prevent and kill off lady's-grass, Paspalum distichum, green foxtail, eleusine indica, amur foxtail etc. to low age barnyard grass, but to sedge weed and broad leaved weed invalid.
Triazole acyl grass amine is the triazolineone weed killer herbicide developed by Japanese Hokko Chemical Industry Co., Ltd., its mechanism of action is proporphyrinogen oxidase inhibitor, causing cell membrane disruption by suppressing proporphyrinogen oxidase in chlcrophyll biosynthesis process, making blade withered, dead rapidly.All can use before bud, after bud, be mainly used in preventing and kill off paddy field grassy weed, sedge weed and part broad leaved weed.
Summary of the invention
The object of this invention is to provide one and can prevent and kill off grassy weed, sedge weed and part broad leaved weed can be prevented and kill off again, and disposable complex weedicide after respond well rice seedlings.
In order to realize foregoing invention object, the invention provides following technical scheme:
The effective ingredient of described complex weedicide is made up of cyhalofop-butyl and triazole acyl grass amine, and wherein the weight ratio of cyhalofop-butyl and triazole acyl grass amine is 1:1 ~ 5.
Preferably, the weight ratio of described cyhalofop-butyl and triazole acyl grass amine is 1:2 ~ 4.
More preferably, the weight ratio of described cyhalofop-butyl and triazole acyl grass amine is 1:3.
More preferably, the quality of described cyhalofop-butyl and triazole acyl grass amine accounts for 0.1 ~ 85% of described complex weedicide gross mass.
More preferably, the formulation of described complex weedicide is for dispersibling oil-suspending agent, granule, wetting powder, water dispersible granules, missible oil, aqueous emulsion, microemulsion or suspending agent.
With the cyhalofop-butyl in the co-toxicity coefficient method evaluation complex weedicide of Sun Yunpei and the synergy of triazole acyl grass amine, result display cyhalofop-butyl, triazole acyl grass amine are obviously greater than 120 in the co-toxicity coefficient that 1:2 ~ 4 ratio is composite, reach remarkable synergistic effect, illustrate that cyhalofop-butyl, triazole acyl grass amine all has synergistic effect in 1:2 ~ 4 ratio mixture.Wherein, it is maximum that cyhalofop-butyl, triazole acyl grass amine presses the effect of 1:3 effect compound synergic, has significant synergies to annual single broadleaf weed.
Show the Security test test of paddy rice, the composite cauline leaf process of cyhalofop-butyl triazole acyl grass amine, tries to achieve the ED suppressing paddy growth 10% by DPS software
10=4641.7702, suppress the ED of weed growth 90%
90=578.7927, selectivity factor is 4641.7702/578.7927=8.02>2, thinks that this medicament has obvious selectivity, and cyhalofop-butyl triazole acyl grass amine has good safety to paddy rice.
Complex weedicide of the present invention is shown by the field control effectiveness test of 2 years, and in the paddy rice 3 leaf phase to period of seedling establishment, weeds 1-5 leaf does not wait the phase, and paddy rice has no symptom of chemical damage from dispenser to maturing stage, to rice safety.The preventive effect of weeds reaches more than 80% in 10 days, within 30 days, reaches more than 90%, along with the increase of dosage, preventive effect obviously strengthens, and a dispenser can control the weeds in crop whole vegetative period, and not only herbicidal effect is remarkable, and environmentally friendly, on second stubble crop without impact.
Compared with prior art, complex weedicide of the present invention can prevent and kill off grassy weed, can prevent and kill off broad leaved weed again, to rice safety, and on succession crop without impact, has a good application prospect.
Embodiment
The invention discloses a kind of paddy rice post-emergence complex weedicide containing cyhalofop-butyl and triazole acyl grass amine two kinds of active components, those skilled in the art can use for reference present disclosure, and suitable improving technique parameter realizes.Special needs to be pointed out is, all similar replacements and change apparent to those skilled in the art, they are all deemed to be included in the present invention.Product of the present invention and application are described by preferred embodiment, related personnel obviously can not depart from content of the present invention, spirit and scope methods and applications as herein described are changed or suitably change with combination, realize and apply the technology of the present invention.
Below in conjunction with embodiment, set forth the present invention further:
Embodiment 1:20% cyhalofop-butyl triazole acyl grass amine missible oil (cyhalofop-butyl: triazole acyl grass amine=1:1)
10kg cyhalofop-butyl, 10kg triazole acyl grass amine, dimethylbenzene complements to 100kg, obtains missible oil.
Embodiment 2:48% cyhalofop-butyl triazole acyl grass amine wetting powder (cyhalofop-butyl: triazole acyl grass amine=1:2)
Get 16kg cyhalofop-butyl, 32kg triazole acyl grass amine, 4kg dispersant NNO, 3kg wetting agent K12,4kg White Carbon black, precipitated calcium carbonate complements to 100kg.Through fully mixing, air-flow crushing, mixing, obtain wetting powder.
Embodiment 3:24% cyhalofop-butyl triazole acyl grass amine dispersibles oil-suspending agent (cyhalofop-butyl: triazole acyl grass amine=1:3)
Get 6kg cyhalofop-butyl, 18kg triazole acyl grass amine, 8kg Pluronic125,5kg propane diols, 0.5kg xanthans, 1kg methylated vegetable oil, water complements to 100kg.Through abundant mixing preparation, ball mill grinding, adjust, be packaged to be oil-suspending agent.
Embodiment 4:60% cyhalofop-butyl triazole acyl grass amine water dispersible granules (cyhalofop-butyl: triazole acyl grass amine=1:4)
Get 12kg cyhalofop-butyl, 48kg triazole acyl grass amine, 7kg D-425,5kg EFW, 5kg ammonium sulfate, 2kg polyethylene glycol, kaolin supplies 100%, obtains water dispersible granules through fully mixing, air-flow crushing, mixing, granulation, drying and screening.
Embodiment 5:60% cyhalofop-butyl triazole acyl grass amine water dispersible granules (cyhalofop-butyl: triazole acyl grass amine=1:5)
Get 10kg cyhalofop-butyl, 50kg triazole acyl grass amine, 7kg D-425,5kg EFW, 5kg ammonium sulfate, 2kg polyethylene glycol, kaolin supplies 100%, obtains water dispersible granules through fully mixing, air-flow crushing, mixing, granulation, drying and screening.
Embodiment 6: cyhalofop-butyl and triazole acyl grass amine cauline leaf process synergy toxicity measure
Under greenhouse experiment, adopt pot-culture method, the herbicidal effect of research cyhalofop-butyl, triazole acyl grass amine binary built, and the synergy type after using with both co-toxicity coefficient method evaluations different proportion of Sun Yunpei, for the rational mixture of cyhalofop-butyl and triazole acyl grass amine provides scientific basis.
Be that paddy rice is rich two excellent for studying thing, for examination weeds be moleplant seed (Leptochloachinensis (L.) Nees), barnyard grass (Echinochloa crusgalli (L.) Beauv.), mexicana (Rotala indica (Willd.) Koehne), Monochoria vaginalis (Monochoria vaginalis (Burm.f.) Presl), difformed galingale herb (Cyperus difformis L.) field upper one year gather seed, germination rate is more than 85%).
Five cyhalofop-butyls in cyhalofop-butyl, triazole acyl grass amine single dose and embodiment 1-5 and triazole acyl grass amine mixture preparation are established 5 dosage respectively, and described ratio is the active component weight ratio of cyhalofop-butyl and triazole acyl grass amine.Separately establish blank, each test process repetition 4 times.Treatment agent dosage refers to table 1.
Table 1 tests process and test level (concentration ga..i../kg)
During test, often kind of weed seed 30-40 grain is evenly put into basin, earthing 0.5cm, the required moisture of growth between weeds culture period, should be supplemented.In paddy rice 3-5 leaf phase, weeds 2-4 leaf phase cauline leaf spraying process.Record the damage symptoms of paddy rice and weeds after dispenser in detail, 20d after medicine, carries out fresh weight measurement, and compared with control treatment, calculates fresh weight preventive effect.
The co-toxicity coefficient method evaluation of result of the test Sun Yunpei use with after synergy type.Its actual toxicity index, mixture theoretical toxicity index, co-toxicity coefficient is calculated according to SUN, Y-P (Sun Yunpei) method.Take log concentration as X, damage by disease and insect preventive effect probit value is Y, asks regression equation.
Actual toxicity index=standard agent LD
50the LD of/mixture
50× 100
Theoretical toxicity index=∑ (percentage of this medicament active ingredient of the toxicity index of reagent agent × in mixture)
Actual toxicity index/theoretical toxicity index × 100 of co-toxicity coefficient=mixture
Be standard agent with cyhalofop-butyl in test.
Criterion: co-toxicity coefficient <80 is antagonism, be summation action between 80-120, >120 is synergistic effect.Cyhalofop-butyl and triazole acyl grass amine mixture, to the fresh weight preventive effect of weeds, the results are shown in Table 2.
After table 2 cyhalofop-butyl and triazole acyl grass amine mixture medicine, 20d is to the fresh weight preventive effect of weeds
In table, control efficiency is the mean value of four data.
As shown in Table 2: medicament to the toxic action situation of weeds and preventive effect, then by its respective virulence regression equation, LD of formulae discovery
50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient, in table 3.
Table 3: cyhalofop-butyl and triazole acyl grass amine mixture are to the synergy of weeds
As shown in Table 3, the co-toxicity coefficient of process C, D, E, F, G is respectively: 85.83,145.02,225.11,182.37,170.55, and the co-toxicity coefficient of each process is all greater than 80, has addition or addition; Wherein, the co-toxicity coefficient of D, E, F, G is greater than 120, has synergistic effect, and the co-toxicity coefficient particularly processing E is maximum, reaches 225.11, has significant synergies.So cyhalofop-butyl, triazole acyl grass amine all has synergistic effect in 1:2 ~ 1:4 ratio mixture, wherein, it is comparatively suitable that cyhalofop-butyl, triazole acyl grass amine presses about 1:3 mixture, has significant synergies to annual dicotyledonous weeds.
Embodiment 7: be described the composite safety to stems and leaves of rice process of cyhalofop-butyl triazole acyl grass amine for 60% cyhalofop-butyl triazole acyl grass amine WG of the embodiment of the present invention 4
Under greenhouse experiment, adopt pot-culture method, study cyhalofop-butyl, the process of triazole acyl grass amine binary built cauline leaf to the safety of paddy rice, for the rational mixture of cyhalofop-butyl and triazole acyl grass amine provides scientific basis.
Be that paddy rice is rich two excellent for studying thing; For examination weeds be moleplant seed (Leptochloachinensis (L.) Nees), barnyard grass (Echinochloa crusgalli (L.) Beauv.), mexicana (Rotala indica (Willd.) Koehne), Monochoria vaginalis (Monochoria vaginalis (Burm.f.) Presl), difformed galingale herb (Cyperus difformis L.) field upper one year gather seed, germination rate is more than 85%).
During test, rice paddy seed 20, often kind weed seed 30-40 grain is evenly put into basin earthing 0.5cm, put into greenhouse and cultivate (25-30 DEG C), the required moisture of growth between rice seedlings and weeds culture period, should be supplemented.Stay the seedling of 10 strain stalwartnesses after all sprouting, grow to dispenser process when 3 ~ 4 leaves and weeds grow to 2 ~ 5 until rice seedlings.
After dispenser, investigate each process paddy rice with or without symptom of chemical damage, if having, record symptom of chemical damage, grade in detail, after medicine 20 days, measure each process paddy rice fresh weight, calculate fresh weight inhibition, with the safety of clear and definite test medicine to paddy rice.
The damage symptoms (as growth inhibition, chlorosis, deformity etc.) of detailed record weeds after dispenser, after medicine 20 days, weighs each process weeds acrial part fresh weight, the fresh weight preventive effect of calculating weeds.
Regression analysis is carried out, dosage ED when calculating correlation coefficient and suppress crop 10% by the probability value of DPS software to the logarithm value of drug dose and paddy rice fresh weight inhibition
10, and suppress weeds 90%ED
90, obtain selectivity index.
Selectivity index=ED
10/ ED
90
Safety evaluatio standard, in table 4, is observed for after dispenser 3 days, and cyhalofop-butyl triazole acyl grass amine high concentration 3600mg/kg process indivedual paddy rice lobus cardiacus has slight jaundice, and growth is subject to slight suppression, and other concentration process paddy growth is normal; 7-12 days after dispenser, low concentration process paddy rice growing way is normal, and paddy rice also slowly recovers in 3600mg/kg process.After dispenser 20 days 60% cyhalofop-butyl triazole acyl grass amine WG to the inhibitory action of paddy rice in table 5.
Table 4 activity of weeding and crop safety ocular estimate evaluation criterion
Table 5 60% cyhalofop-butyl triazole acyl grass amine WG is to the inhibitory action of paddy rice
| Process | Mass concentration (mg/kg) | 20d inhibiting rate (%) |
| 225 | 0.17 | |
| 450 | 0.46 | |
| 60% cyhalofop-butyl triazole acyl grass amine WG | 900 | 1.16 |
| 1800 | 3.52 | |
| 3600 | 8.28 | |
| Contrast | Clear water | / |
Table 6 60% cyhalofop-butyl triazole acyl grass amine WG is to the fresh weight preventive effect of weeds
This medicament is to the toxic action situation of weeds and preventive effect as shown in Table 6, by formulae discovery its each virulence regression equation, LD
50, list in table 7.
Table 7: virulence regression equation and LD
50
| Process | Regression equation | Correlation coefficient | LD 50 | 95% confidence interval |
| A | Y＝-0.2117+2.3505x | 0.9929 | 164.9259 | 143.3974－189.6865 |
As shown in Table 7: the LD of 60% cyhalofop-butyl triazole acyl grass amine WG
50for: 164.9259,95% confidence interval is 143.3974-189.6865.
So by table 5, table 6, tried to achieve the ED suppressing paddy growth 10% by DPS software
10=4641.7702, suppress the ED of weed growth 90%
90=578.7927, selectivity factor is 4641.7702/578.7927=8.02>2, thinks that this medicament has obvious selectivity, to paddy growth safety.
Embodiment 8: field control effectiveness test
Complex weedicide of the present invention is shown by the field control effectiveness test of 2 years, the rice striking root phase before the winter, weeds 1-5 leaf does not wait the phase, 24% cyhalofop-butyl triazole acyl grass amine in embodiments of the invention 3 is utilized (to dispersible oil-suspending agent (OF) dosage 80,100,120,200 milliliters/mu, be watered 40 kgs/acre to spray, 20,60 days and maturing stage range estimation Security of rice and Weed-control effect, within 20,60 days, survey all preventive effects, result is as shown in table 8 below:
Table 8: herbicidal effect
By range estimation, paddy rice has no symptom of chemical damage from dispenser to maturing stage, to rice safety.
24% cyhalofop-butyl triazole acyl grass amine OF, 80 milliliters of/mu preventive effects to weeds, within 10 days, reach more than 80%, within 30 days, reach more than 90%, along with the increase of dosage, preventive effect obviously strengthens, and can have good herbicidal effect paddy field 80 milliliters/mu to weeds.It is used alone wherein compared with a kind of active ingredient, expand herbicide spectrum, it all has obvious synergistic effect to grassy weed and broad leaved weed.
And reduce a mu consumption, thus substantially reduce agriculture originally.
So complex weedicide of the present invention dispenser after rice seedlings can control the weeds in crop whole vegetative period, not only herbicidal effect is remarkable, and it is environmentally friendly, on second stubble crop without impact, little to the pollution of environment, to people, animal, birds and beneficial organism safety, be conducive to keeping ecological balance.In addition, weed killer herbicide of the present invention adopts physical method processing, and production technology is simple, and three-waste free discharge in production process, has no adverse effects to ecotope.It is the desirable complex weedicide of current control efficiency.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a disposable complex weedicide after rice seedlings, is characterized in that: the effective ingredient of described complex weedicide is made up of cyhalofop-butyl and triazole acyl grass amine, and wherein the weight ratio of cyhalofop-butyl and triazole acyl grass amine is 1:1 ~ 5.
2. complex weedicide according to claim 1, is characterized in that: the weight ratio of described cyhalofop-butyl and triazole acyl grass amine is 1:2 ~ 4.
3. complex weedicide according to claim 2, is characterized in that: the weight ratio of described cyhalofop-butyl and triazole acyl grass amine is 1:3.
4. the complex weedicide according to claim 1,2 or 3, is characterized in that: the quality of described cyhalofop-butyl and triazole acyl grass amine accounts for 0.1 ~ 85% of described complex weedicide gross mass.
5. complex weedicide according to claim 1, is characterized in that: the formulation of described complex weedicide is for dispersibling oil-suspending agent, granule, wetting powder, water dispersible granules, missible oil, aqueous emulsion, microemulsion or suspending agent.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106982848A (en) * | 2017-05-27 | 2017-07-28 | 北京科发伟业农药技术中心 | A kind of Herbicidal combinations containing pyraclonil and three azole amides |
| CN107347888A (en) * | 2017-07-24 | 2017-11-17 | 安徽丰乐农化有限责任公司 | A kind of rice terrace post-emergence complex weedicide |
| CN108849957A (en) * | 2018-08-24 | 2018-11-23 | 安徽丰乐农化有限责任公司 | A kind of rice post-emergence complex weedicide containing three azole amides and benthiocarb |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251580A (en) * | 1997-02-26 | 2000-04-26 | 北兴化学工业株式会社 | 1-substituted-4-carbamoyl-1,2,4-triazol-5-one derivatives and herbicide |
| JP2009013114A (en) * | 2007-07-05 | 2009-01-22 | Hokko Chem Ind Co Ltd | Herbicide for paddy field and herbicidal method of paddy field |
| JP2010209061A (en) * | 2009-02-13 | 2010-09-24 | Nippon Nohyaku Co Ltd | Herbicide composition and method for using the same |
-
2015
- 2015-04-24 CN CN201510201216.9A patent/CN104782646A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251580A (en) * | 1997-02-26 | 2000-04-26 | 北兴化学工业株式会社 | 1-substituted-4-carbamoyl-1,2,4-triazol-5-one derivatives and herbicide |
| JP2009013114A (en) * | 2007-07-05 | 2009-01-22 | Hokko Chem Ind Co Ltd | Herbicide for paddy field and herbicidal method of paddy field |
| JP2010209061A (en) * | 2009-02-13 | 2010-09-24 | Nippon Nohyaku Co Ltd | Herbicide composition and method for using the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106982848A (en) * | 2017-05-27 | 2017-07-28 | 北京科发伟业农药技术中心 | A kind of Herbicidal combinations containing pyraclonil and three azole amides |
| CN107347888A (en) * | 2017-07-24 | 2017-11-17 | 安徽丰乐农化有限责任公司 | A kind of rice terrace post-emergence complex weedicide |
| CN107347888B (en) * | 2017-07-24 | 2020-11-24 | 安徽丰乐农化有限责任公司 | Post-emergence compound herbicide for paddy field |
| CN108849957A (en) * | 2018-08-24 | 2018-11-23 | 安徽丰乐农化有限责任公司 | A kind of rice post-emergence complex weedicide containing three azole amides and benthiocarb |
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Application publication date: 20150722 |