CN1106208A - Insecticide emulsible concentrate - Google Patents
Insecticide emulsible concentrate Download PDFInfo
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- CN1106208A CN1106208A CN 94109411 CN94109411A CN1106208A CN 1106208 A CN1106208 A CN 1106208A CN 94109411 CN94109411 CN 94109411 CN 94109411 A CN94109411 A CN 94109411A CN 1106208 A CN1106208 A CN 1106208A
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Abstract
The emulsified oil as pesticide with distinct effect to the pests having chemical resistance is prepared from 2-3 components which mutually have synergetic actions and negative reciprocal resisting relationship (such as one organophosphorus as main component and pyrethrin and another organophosphorus as auxiliary one), emulsifier, assistant and solvent and features convenient application, less dosage.
Description
The present invention relates to a kind of application that prevents and treats pesticide new variety-insecticide emulsible concentrate and compound method and this missible oil of diseases and pests of agronomic crop.
In recent years, the damage by disease and insect of cotton is on the rise, be used to prevent and treat cotton cotton bollworm, aphid, acarid, bridging worm, educate damage by disease and insect such as stinkbug pesticide variety a lot, organic phosphates, chrysanthemum ester class, carbamates etc.These agricultural chemicals are playing important function aspect kill pests, the protection crops over a period to come.But because a certain single agent agricultural chemicals of long-term use makes the gene of insect produce variation, produced pesticide resistance gradually, brought very big difficulty for the work that prevents and treats cotton diseases and insect pests with the effective fatal gene action that adapts to a certain single agent agricultural chemicals.In view of almost there not being the agent of a kind of agricultural chemicals list can prevent and treat drug-fast cotton worm preferably now; Cotton worm resistance be on the rise and the large area control situation of difficult under, though various places also have some Recompounded pesticides to come out, but reason because of aspects such as its price, preventive effect and toxicity, can not satisfy cotton grower's demand, therefore, numerous cotton growers press for a kind of high-efficiency low-toxicity, low-residual, to person poultry harmless, pesticide new variety safe in utilization.
In order effectively to solve this difficult problem of cotton diseases and insect pests, except cultivating disease-resistant variety, outside the enhancement of field management, the novel pesticide of exploitation good disinsection effect is the task of top priority, however synthetic a kind of novel agrochemical, study the discussion of structure from chemosynthesis, research from the insecticidal mechanism to the toxicity, from the laboratory to the field experiment, the time of needs several years or more than ten years, cycle is longer, can not solve the matter of great urgency of current agricultural.
Purpose of the present invention is exactly in order to overcome weak point of the prior art, according to the operating position of present agricultural chemicals and the resistance situation of damage by disease and insect, utilize mutual synergistic effect between some agricultural chemicals and negative cross resistance to concern and stop duplicating, enlarging of its resistant gene, screen in the multiple at home insecticide, composite, in line with improving drug effect, reducing toxicity, reducing residual hazard pollutes, the principle that reduces cost, through series of indoor and field trial, filtered out have wide spectrum, quick-acting Recompounded pesticide new varieties-insecticide emulsible concentrate.
The present invention screens according to the drug effect of numerous insecticides, from the organophosphorous pesticide to the pyrethrin pesticide:
1, the selection of insecticide
A, confession examination pesticide species: 50% phoxim, 50% parathion, 80% dichlorvos, 40% flolimat, 20% sumicidin, 2.5% decis, 10% cypermethrin.
B, biological: one, two, three, four generations of cotton bollworm for examination.
C, compound screening test.
When two kinds (a kind of organic phosphor and a kind of chrysanthemum esters) or more than two kinds behind (two kinds of organic phosphors and a kind of chrysanthemum ester) mixed pesticide, it is very complicated to the synergy virulence variation of organism, three kinds of situations are generally arranged: the mixed virulence of (1) medicament is bigger than the virulence summation of the independent use of each single agent, and this effect claims synergistic effect.(2) mixed virulence is littler than the virulence summation of the independent use of each single agent, and this effect claims antagonism.(3) mixed virulence is close with single agent virulence summation, and this effect claims summation action.
For mensuration is synergy, antagonism or summation action after using with, we weave into A, B, C with above-mentioned agricultural chemicals ... method by indoor bioassay, measure each single agent and be mixed into that the medial lethal dose (LD50 or LC50) to cotton bollworm calculates co-toxicity coefficient behind the mixture by a certain percentage, computational methods are as follows:
Co-toxicity coefficient=(the actual measurement toxicity index of mixture)/(the theoretical toxicity index of mixture) * 100
Wherein:
Mixture actual measurement toxicity index=(half lethal dose of standard medicament)/(for the half lethal dose of examination mixture) * 100
Single agent actual measurement toxicity index=(half lethal dose of standard medicament)/(half lethal dose of reagent agent) * 100
The theoretical toxicity index of the single agent=single agent actual measurement toxicity index * content of single agent in being mixed.
The theoretical toxicity index sum of the theoretical toxicity index of mixture=each single agent.
According to the co-toxicity coefficient law theory, when co-toxicity coefficient greater than 200 the time, remarkable synergistic effect is arranged, certain synergistic effect is arranged, if between the 70-150 summation action is arranged, if be antagonism less than 70 between 150-200.Therefore in preparation, select the object that two groups of conducts that co-toxicity coefficient is the highest are selected, wherein one group is the synergy group that is mixed between the organic phosphor, it is that the synergy group co-toxicity coefficient that is mixed for organic phosphor and chrysanthemum ester class is 214 that co-toxicity coefficient is 145.64, one groups, reaches remarkable synergy level.(for details see attached table)
Table 1
| Medicament | LD50 μ g/ head | The actual measurement toxicity index | Theoretical toxicity index | Co-toxicity coefficient |
| Phoxim dichlorvos mixture | 0.071 0.69 0.24 | 100 10.29 29.58 | 20 0.31 20.31 | 145.64 |
Table 2
| Medicament | LD50 μ g/ head | The actual measurement toxicity index | Theoretical toxicity index | Co-toxicity coefficient |
| Organic phosphor mixture sumicidin mixture+sumicidin | 0.24 0.00041 0.006289 | 100 58536.59 3815.83 | 27 1756.10 1783.10 | 214 |
Content of the present invention in sum can be selected two to three kinds of agricultural chemicals that mutual synergy and negative cross resistance relation are arranged, for example based on a kind of organic phosphor, chrysanthemum ester and another kind of organic phosphor be auxilliary carry out composite, be equipped with effective dose emulsifier, auxiliary agent, solvent etc. again, constitute Recompounded pesticide new varieties-insecticide emulsible concentrate.Described organic phosphor can be phoxim, acephatemet, dichlorvos or parathion-methyl.The chrysanthemum ester can be decis or cypermethrin or sumicidin or time.
The key of this invention is the selection of three kinds of single agent agricultural chemicals and auxiliary agent and determining of proportioning.
The composition scope of insecticide emulsible concentrate of the present invention is:
Phoxim 5-25%(weight)
Sumicidin (or decis or cypermethrin) 1-5%(weight)
Dichlorvos (or acephatemet or parathion-methyl) 5-20%(weight)
Emulsifier, auxiliary agent 10-20%(weight)
Solvent 30-40%(weight)
The each component summation is a 100%(weight)
The present invention is with three kinds of agricultural chemicals crude oil (missible oil), after the metering, stirs in the suction modulation kettle successively.Add a certain amount of emulsifier, auxiliary agent, solvent etc. more successively, stir, after quality inspection is qualified, promptly obtain tan insecticide emulsible concentrate.
2, the physicochemical property of complex preparation:
(1) emulsibility
The good emulsifying performance is to guarantee that medicine evenly absorbs, and improves one of leading indicator of insecticidal effect.According to the 4stability determination of GB1603 agricultural chemicals emulsion, under standard hard water condition, dilution 2000-5000 doubly observes the emulsification result, does not all have missible oil and precipitation is separated out.Test shows that the emulsifiability of complex preparation is good, can be with any dilution proportion in the effectively preventing effect.
(2) low-temperature stability is pressed the GB9557 standard test, and low-temperature stability meets the GB requirement.
(3) heat storage stability: press GB9557 stability and measure, insecticide emulsible concentrate is packed in the 50ml peace bottle, sealing was preserved 14 days in 54 ° ± 2 ℃ insulating boxs, took out cooling.In 24 hours, detect effective component content behind the leakage detection and meet standard-required.
3, the toxicity test of this insecticide emulsible concentrate:
(1) acute oral toxicity is measured with horn method, judges that according to the acute grade scale of agricultural chemicals this agricultural chemicals per os toxicity is medium poison level.
(2) the mucomembranous irritant test method shows according to defending prison (91) No. 17 civilian result of the tests:
1. it is 47.38 that acute eye stimulates the top index.
2. average index still is that animal subject does not all have the recovery sign after 47.38,7 days after 4 days.
3. according to the mucous membrane irritation evaluation criterion, belong to medium excitant.
(3) through the skin determination of acute toxicity with horn method, judge that according to the agricultural chemicals acute toxicity grading criteria this agricultural chemicals percutaneous toxicity is a low toxicity level.
Be the drug effect and the effective dose thereof of checking insecticide emulsible concentrate of the present invention, application method is to the safety of crop, and is for the large tracts of land production application provides scientific evidence, existing as follows to the control cotton bollworm test of pesticide effectiveness:
One, test material and method
1, reagent agent: 1. insecticide emulsible concentrate; 2. dichlorvos; 3. phoxim; 4. Belmark.
2, for studying thing: No. 16, cotton middle cotton.
3, controlling object: cotton bollworm
4, handle (with multiple) (1) hundred worms 2000 of going out, (2) hundred worms 1500 of going out, (3) hundred worms 1000 of going out, (4) dichlorvos 800, (5) phoxim 800, (6) Belmark 200, (7) CK(blank).
5, field design, 50M is taken up an area of in every processing
2Repeat randomized arrangement 4 times.
6, control time and method:
Fixed 3 points of the every processing of dispenser are looked into 10 strain cottons at every, check ovum amount and larva, and dispenser 3 days was looked into residual worm alive and ovum respectively in 7 days, calculated the rate that goes down and proofreaied and correct preventive effect.
Two, result of the test and analysis
Table 1 insecticide emulsible concentrate control cotton bollworm drug effect table
As known from Table 1: three days preventive effect of hundred worms of going out control cotton bollworm dispenser is better than 7 days preventive effect.Dichlorvos, phoxim are that 800 times, the preventive effect of 2000 times of three single agent of sumicidin are all inferior to the effects of 2000 times of hundred worms of going out.
Table 2 insecticide emulsible concentrate control cotton bollworm variance analysis table
* expression and remarkable
The variance analysis of insecticide emulsible concentrate control cotton bollworm, difference is extremely remarkable between the processing, and difference is not remarkable between the repetition, and test is accurately and reliably.
Be not difficult to find out from table 1,2, the present invention has compared following remarkable advantage with prior art: the first, by three kinds of composite insecticide emulsible concentrates that form of single agent compare with dichlorvos, phoxim, three single agent of Belmark, the preventive effect of three single agent is lower than the preventive effect of hundred worms of going out significantly.The second, insecticide emulsible concentrate control cotton bollworm, three different multiples are used on producing and doubly are advisable with 1000-1500, and 3 days drug effect of dispenser is better than 7 days control efficiency, and drug effect reaches 89.41-96.70% respectively.The 3rd, this medicament is to crop and the no abnormal reaction low-residual of operating personnel, and pollution-free, the peasant is easy to use, safe.The 4th, this medicament has the good performance of tagging, and knockdown effect is fast, and not only having killed ovum but also having killed larva is the pharmaceutical preparations of a kind of anti-cotton bollworm, has solved resistance, has reduced dosage, has reduced cost.The 5th, the present invention is not only applicable to cotton, wheat, corn, beans, tobacco, fruit tree, flowers and part melon dish crop ultralow amount in early stage and uses, and it also can prevent and treat cotten aphid, bridging worm, blue or green worm, leafhopper, cotton bollworm, two spotted spider mite, corn borer, cotton stinkbug, wheat aphid, suction slurry worm, mythimna separata, pine caterpillars, mite class effectively.Soil insects such as mole cricket, Qi worm, nematode, wireworm also there is preventive and therapeutic effect.The 6th, insecticide emulsible concentrate is a kind of novel pesticide of efficient, wide spectrum, it have strong tag, stomach toxicity, interior suction, fumigation action, and all kinds of larvas of Lepidoptera are also had fixed bio-imitability destruction.
Claims (3)
1, a kind of by organic phosphor and the composite insecticide emulsible concentrate of making of pyrethrin pesticide, its feature is being made up of phoxim, sumicidin or decamethrin cypermethrin, dichlorvos or acephatemet or parathion-methyl, emulsifier, auxiliary agent, solvent composition, and its composition scope is:
Phoxim 5-25% (weight)
Sumicidin (or decis or cypermethrin) 1-5% (weight)
Dichlorvos (or acephatemet or parathion-methyl) 5-20% (weight)
Emulsifier, auxiliary agent 10-20% (weight)
Solvent 30-40% (weight)
The each component summation is 100% (weight)
2, insecticide emulsible concentrate according to claim 1 is characterized in that the organic phosphor in this missible oil also can be that acephatemet or parathion-methyl, chrysanthemum ester also can be decis or cypermethrin.
3,, it is characterized in that with the composite insecticide emulsible concentrate that forms of said method according to claim 1,2 described insecticide emulsible concentrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94109411 CN1106208A (en) | 1994-08-12 | 1994-08-12 | Insecticide emulsible concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94109411 CN1106208A (en) | 1994-08-12 | 1994-08-12 | Insecticide emulsible concentrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1106208A true CN1106208A (en) | 1995-08-09 |
Family
ID=5033924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94109411 Pending CN1106208A (en) | 1994-08-12 | 1994-08-12 | Insecticide emulsible concentrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1106208A (en) |
-
1994
- 1994-08-12 CN CN 94109411 patent/CN1106208A/en active Pending
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