CN105145611A - Pesticide composition containing hexythiazox and flufenoxuron - Google Patents
Pesticide composition containing hexythiazox and flufenoxuron Download PDFInfo
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- CN105145611A CN105145611A CN201510643682.2A CN201510643682A CN105145611A CN 105145611 A CN105145611 A CN 105145611A CN 201510643682 A CN201510643682 A CN 201510643682A CN 105145611 A CN105145611 A CN 105145611A
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- hexythiazox
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Abstract
The invention relates to a pesticide composition containing hexythiazox and flufenoxuron. In the pesticide composition, avermectin, hexythiazox and flufenoxuron are used as active ingredients with a weight ratio of avermectin to hexythiazox to flufenoxuron being (1-2):(3-8):(5-10) in the composition. According to the invention, through reasonable blending, a remarkable synergistic effect is achieved, the pesticide effect can be greatly improved, the pesticide dosage per mu is reduced, so that the adverse effect on the environment and pesticide residue are reduced, and the lasting time of pesticide effect is prolonged; besides, the defect that a single drug cannot prevent or kill red mites in all growth cycles is solved.
Description
Technical field
The present invention relates to a kind of composition pesticide, specifically contain the miticide composition of Hexythiazox and flufenoxuron, be mainly used in preventing and treating the harmful mite on cotton.
Background technology
Two-spotted spider mite, belong to arachnids, Acarina, Tetranychidae is one of primary pest of cotton.The tetranychid of China harm cotton is mainly Tetranychus cinnabarinus, Tetranychus urticae, Mite.Become mite all to draw juice at cotton leaf back if harm shape is cotton, cause leaf chlorosis, occur macula lutea, erythema or yellowish-white spot, cause that blade is withered to come off time serious, cotton plant is withered, seedling killed serious time, cause dead seedling; The cotton buds and bolls phase is injured, and increase fruit abscission rate, bell heavily alleviates, and greatly reduces the quality of cotton, reduces output of cotton.Two-spotted spider mite fertility is very strong, and a female one-tenth mite can lay eggs about 100 all one's life, reaches as high as 700.Be about 5d when condition is suitable for and complete a generation, within 1 year, occur, generation overlap 1O ~ 20 generation, its fertility is strong, and harmfulness is large, how to prevent and treat and to become problem demanding prompt solution with or without effective medicament.
Avermectin, it is a kind of macrolide disaccharide compounds, have insects and mites and tag and stomach poison function, without systemic action, but have very strong osmosis to blade, subepidermal insect can be killed, if the one-tenth mite mite on Avermectin energy effectively preventing cotton, because not having ovicidal activity, therefore the lasting period is shorter.
Hexythiazox, is the novel miticide of thiazolidine ketone, has good penetrability to plant top layer, but without Uptake and translocation effect.If there is strong ovicidal to various plants evil mite, kill the characteristic of young mite mite, invalid to one-tenth mite, but to touching the ovum that liquid female adult pest produces, there is the effect suppressing hatching, the lasting period reaches about 50 days.
Flufenoxuron, belongs to acyl group ureas insecticidal/acaricidal agent, has and tag and stomach poison function, main suppresses the chitinous synthesis of insect cuticle, insect can not normally be casted off a skin or abnormal and dead.After adult contact medicine, though the ovum of product hatch into larva also can be very fast dead.Flufenoxuron is widely used on oranges and tangerines, cotton, grape, soybean, fruit tree, king's rice and coffee, planting property of control food mite class (thorn goitre mite, short hairs mite, Panonychus citri, rust mite, tetranychus telarius etc.) and other insects many, and have good lasting effect, but quick-acting is poor.
The mechanism of action of Avermectin, Hexythiazox, flufenoxuron is different, and the miticide composition being active ingredient with Avermectin, Hexythiazox, flufenoxuron, there is no relevant report for the control and application preventing and treating cotton red spider.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of high-efficiency low-toxicity, lasting period long, mu cost is low, effectively can prevent and treat cotton red spider, and is conducive to the composition pesticide of integrated pest management.
The present invention solves the problems of the technologies described above taked technical scheme: provide a kind of composition pesticide containing Hexythiazox and flufenoxuron, with Avermectin, Hexythiazox and flufenoxuron for active ingredient, Avermectin, Hexythiazox and flufenoxuron weight ratio is in the composition 1-2:3-8:5-10.
The described composition containing Hexythiazox and flufenoxuron, according to method known in those skilled in the art, adds respective secondary auxiliary agent and is mixed with the practical formulation of the applicable agricultural such as microemulsion, aqueous emulsion.
Adjuvant required in present composition preparation comprise solvent, emulsifier, stabilizing agent, antifreezing agent, defoamer, thickener, dispersant or other be of value to the active ingredient known substance that plays of stable and drug effect in the formulation, all various compositions that are conventional in field of pesticide preparation or permission use, be not particularly limited, concrete composition and consumption are determined by test according to recipe requirements.
The present invention has following advantage and remarkable result, Avermectin, Hexythiazox are different with the mechanism of action of flufenoxuron, rational mixture has obvious synergistic function, significantly can improve drug effect, reduce agricultural chemicals mu consumption, thus the harmful effect reduced environment and residue of pesticide, extend the duration of drug effect, solve single medicament simultaneously and can not prevent and treat the defect covering all growth cycles of two spotted spider mite.
Embodiment
Be described further technical scheme of the present invention and technique effect with the indoor joint toxicity measuring test and field medicine effect test that measure biocidal activity below, percentage of the present invention is all weight percentage.
Embodiment 1: Avermectin, Hexythiazox and flufenoxuron and different ratio are to the toxicity test of Tetranychus urticae
Test method is with reference to " People's Republic of China (PRC) agricultural industry criteria NY/T1154.12-2006 ".Picking up from the female one-tenth mite of Tetranychus urticae in field, through indoor feeding 30 generation, selecting the female one-tenth mite of growth uniformity as supplying examination worm.Adopt cotton seedling method, namely on little basin cotton seedling, connect Panonychus citri 50-60 head mite, check radix after 1 day, choose except after dead mite, mend to add and live into mite, retaining often process mite number is about 50.The seedling of mite will be had to use spray tower to spray, moves into 25 DEG C, cultivate under relative moisture 90% condition, check after 15 days, record survival number, carries out statistical analysis with DPS data processing software, calculating regression curve, obtains LC
50, adopt the abundant co-toxicity coefficient method (CTC) waiting nineteen sixty to propose of Sun Yun to evaluate the synergistic effect of pharmacy mix.The computing formula of co-toxicity coefficient is as follows:
Actual measurement toxicity index (ATI)=(standard agent LC
50/ reagent agent LC
50) × 100
In theoretical toxicity index (TTI)=A medicament ATI × mixture A percentage composition+B medicament ATI × mixture in the percentage composition of B
Co-toxicity coefficient (CTC)=(mixture ATI/ mixture TTI) × 100
When CTC≤80, composition shows as antagonism, and as 80 < CTC < 120, composition shows as summation action, and when CTC >=120, composition shows as synergistic effect.
Result of the test is in table 1.
Table 1 Avermectin, Hexythiazox, flufenoxuron and different ratio are to the toxicity test (15 days) of Tetranychus urticae
| Reagent agent | Proportioning | Regression equation (y=a+bx) | Correlation coefficient | LC 50(mg/L) | Co-toxicity coefficient |
| Avermectin (A) | / | y＝4.1536+1.7252x | 0.9945 | 3.15 | / |
| Hexythiazox (B) | / | y＝3.9657+1.0395x | 0.9915 | 10.19 | / |
| Flufenoxuron (C) | / | y＝2.9461+1.5810x | 0.9943 | 20.85 | / |
| A:B:C | 1:5:10 | y＝3.5666+2.0726x | 0.9984 | 4.98 | 249.5 |
| A:B:C | 1:3:6 | y＝3.3050+2.3479x | 0.9909 | 5.38 | 206.5 |
| A:B:C | 1:8:6 | y＝3.9835+1.6234x | 0.9884 | 4.30 | 250.9 |
| A:B:C | 2:3:7 | y＝3.8812+1.6488x | 0.9897 | 4.85 | 195.6 |
| A:B:C | 2:7:8 | y＝3.6525+1.7885x | 0.9984 | 5.80 | 171.9 |
| A:B:C | 2:6:9 | y＝3.7976+1.6210x | 0.9964 | 5.62 | 182.9 |
| A:B:C | 1:1:1 | y＝3.5606+1.5708x | 0.9962 | 8.25 | 78.4 |
From table 1, when the weight ratio of Avermectin, Hexythiazox and flufenoxuron carries out mixture between 1-2:3-8:5-10, each proportioning co-toxicity coefficient all reaches more than 120, and the virulence of composition to cotton Tetranychus urticae shows as significantly coordinates synergistic effect; But when composition weight is than when being 1:1:1, spends coefficient together and be only 78.4, present antagonism.
The compound method of embodiment 2:8% abamectin hexythiazox flufenoxuron microemulsion and medicament field trial
By recipe requirements, by the amount of above component through dissolving completely and mixing, obtained 8% abamectin hexythiazox flufenoxuron microemulsion after stirring.
This embodiment preparation, for preventing and treating cotton Tetranychus urticae, adopts conventional method to carry out even spraying, drips for standard with blade face.During dispenser, field Tetranychus urticae is more.4 process are established in test altogether, and each process repeats for 4 times.Before dispenser, investigate field insect population radix, within after medicine 1 day, 7 days and 21 days, investigate residual borer population of living respectively, during investigation, 2 strains are looked in each community, every strain looks into 5 leaves respectively by orientation, 4, the four corners of the world, every community looks into 40 leaves altogether, records mite number of living, carries out control efficiency statistics.
Preventive effect computational methods:
In formula: PT
0---before-----treatment region medicine; PT
1after-----treatment region medicine
CK
0---before the medicine of-----check plot; CK
1after the medicine of-----check plot
Table 28% abamectin hexythiazox flufenoxuron microemulsion is to the field trial chart of Tetranychus urticae
As shown in Table 2, after Avermectin, Hexythiazox and flufenoxuron ester are composite, built agent uses relative to single dose and improves a lot to the control efficiency of cotton Tetranychus urticae, the effect of 1 day after medicine, quick-acting significantly improves, and after medicine, after 21 days, preventive effect is still higher, illustrate that the lasting period of mixture is better, can spraying times be reduced like this, thus more saving of labor can economize this, reduce the harmful effect to environment and residue of pesticide.
The compound method of embodiment 320% abamectin hexythiazox flufenoxuron aqueous emulsion and medicament field trial
Take 2% Avermectin, 6% Hexythiazox, 12% flufenoxuron, 7%N, N-dimethylformamide (emulsifier), 3% dense newborn 500
#(emulsifier), lignosulfonates 2% (dispersant), 0.08% silicone oil (defoamer), deionized water add to 100%, the obtained 20% abamectin hexythiazox flufenoxuron aqueous emulsion of mixing.
This embodiment preparation is for preventing and treating cotton Tetranychus urticae, and during dispenser, field Tetranychus urticae is more, and 4 process are established in test altogether, and each process repeats for 4 times, adopts spray method, insect survey mode and the drug effect computational methods identical with embodiment 2 field trial.
Result of the test is in table 3.
Table 320% abamectin hexythiazox flufenoxuron aqueous emulsion is to the field trial table of Tetranychus urticae
Field trial shows: 20% abamectin hexythiazox flufenoxuron aqueous emulsion has significant control efficiency to cotton red spider, its control efficiency of 20000 times is obviously better than contrast medicament 2% abamectin aqueous emulsion 3000 times, 5% Hexythiazox aqueous emulsion 3000 times, 5% flufenoxuron aqueous emulsion 3000 times, after showing Avermectin, Hexythiazox and flufenoxuron mixture, significantly improve the control efficiency to two-spotted spider mite, composition all has significant improvement than single dose from the persistence of quick-acting and drug effect, greatly reduce dosage, saving of labor economizes this more.Each medicament of process of the test is to cotton growth safety.
In sum, composition of the present invention is employing 3 kinds of active component compound schemes, its activity and miticidal effect are not the simple superposition of each composition activity, compared with existing unitary agent, except there is significant miticidal effect, and there is significant synergistic effect, quick-acting is high, lasting effect is long, the generation of two spotted spider mite resistance can be slowed down, good to crop safety, meet the security requirement of pesticidal preparations.
Claims (2)
1. contain a composition pesticide for Hexythiazox and flufenoxuron, it is characterized in that, with Avermectin, Hexythiazox and flufenoxuron for active ingredient, Avermectin, Hexythiazox and flufenoxuron weight ratio is in the composition 1-2:3-8:5-10.
2. the composition pesticide containing Hexythiazox and flufenoxuron according to claim 1, it is characterized in that, described composition is mixed with microemulsion or aqueous emulsion.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104824008A (en) * | 2015-05-29 | 2015-08-12 | 杨新兰 | Pesticide composition containing hexythiazox and flufenoxuron |
| CN104872164A (en) * | 2015-05-29 | 2015-09-02 | 杨新兰 | Method for preventing citrus red mites |
| CN104886106A (en) * | 2015-05-29 | 2015-09-09 | 杨新兰 | Method for preventing and controlling tetranychus cinnabarinus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104824008A (en) * | 2015-05-29 | 2015-08-12 | 杨新兰 | Pesticide composition containing hexythiazox and flufenoxuron |
| CN104872164A (en) * | 2015-05-29 | 2015-09-02 | 杨新兰 | Method for preventing citrus red mites |
| CN104886106A (en) * | 2015-05-29 | 2015-09-09 | 杨新兰 | Method for preventing and controlling tetranychus cinnabarinus |
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