CN103155938B - Clothianidin/Diafenthiuron compound insecticidal composition - Google Patents

Abstract

The invention belongs to the technical field of agricultural insecticides, and particularly relates to a Clothianidin/Diafenthiuron compound insecticidal composition. The effective ingredients are Clothianidin and Diafenthiuron in a weight ratio of 1:(4-7), preferably 1:(5-6). The Clothianidin/Diafenthiuron compound insecticidal composition is composed of the effective ingredients with different action mechanisms, so that the action sites are increased, thereby being beneficial to overcoming and postponing the generation of insecticide resistance of insects, and widening the insecticidal spectrum; and the invention greatly enhances the insecticidal effect, has the advantages of long preventive effect time and lower consumption of effective ingredients in the field, lowers the production and use cost, and reduces the insecticide residue and environmental pollution.

Description

Clothianidin and diafenthiuron complex insecticidal composition

Technical field

The invention belongs to agricultural fungicides technical field, particularly a kind of clothianidin and diafenthiuron complex insecticidal composition.

Background technology

Clothianidin is a kind of insecticide in anabasine, is the novel pesticide of highly effective and safe, high selectivity, and its effect is similar with nAChR, have tag, stomach toxicity and systemic activity.Be mainly used on paddy rice, vegetables, fruit tree and other crops anti-ly eliminating aphis, the insecticide of Semiptera, coleoptera, diptera and some Lepidoptera class pest such as leafhopper, thrips, plant hopper, there is efficient, wide spectrum, consumption is few, toxicity is low, the drug effect lasting period long, to crop without poisoning, use safety, with conventional pesticide without advantages such as cross resistances, having remarkable interior suction and osmosis, is the another new varieties that substitute high malicious organophosphorous pesticide.Its novel structure, special, performance is more excellent compared with traditional nicotinic insecticide, and large-scale insecticide variety likely becomes international.

Diafenthiuron is a kind of novel Thiourea efficient insecticide, miticide, have tag, stomach toxicity, interior suction and fumigation action, and there is certain ovicidal effect, low toxicity, but to fish, the high poison of honeybee.Under ultraviolet light, change the material with insecticidal activity into, there is stronger activity to having produced serious drug-fast insect on vegetables.Can prevent and treat aphid, aleyrodid, leafhopper, noctuidae pests and evil mite on various crop and ornamental plants.Mainly be made into medicine liquid spray with wetting powder and use, control vegetables diamond-back moth, cabbage caterpillar and cotton red spider, general 20～30 grams of active ingredients for mu, 10～15 days lasting periods.

In Agriculture Field Pests control, often there is defect in various degree in the insecticide variety that contains single-activity component, as dosage major pest easily develops immunity to drugs, and desinsection narrow range, application times is added heavily environmental pollution etc.For the upper insect that produces resistance of control agricultural, a kind of way is to release new and the new component of existing kind without cross resistance.But the development cost of new active ingredient is high, the construction cycle is long, and does not all catch up with the speed of insect generation resistance forever.Other way, such as crop allocation adjustment, different agricultural chemicals rotations etc., in the process of practical operation, is difficult to really play obvious effect.

Summary of the invention

For addressing the above problem, the invention provides that a kind of insecticidal spectrum is wide, cost is low, there is the complex insecticidal composition of synergistic effect.

Technical scheme of the present invention is: a kind of clothianidin and diafenthiuron complex insecticidal composition, its active ingredient is clothianidin and diafenthiuron.

The weight ratio of described active ingredient clothianidin and diafenthiuron is 1:4～7, preferably 1:5～6.

Above-mentioned active ingredient clothianidin and diafenthiuron are all insecticides well known in the art, can buy by various commercial channel.

According to the needs that use, add the conventional auxiliary materials such as pesticide field surfactant, carrier, antifreezing agent, thickener or disintegrant, composition can be made to wetting powder or water dispersible granules or aqueous suspension agent.

Clothianidin of the present invention and diafenthiuron complex insecticidal composition, can be used for preventing and treating aphid on fruit tree egger, vegetables, leafhopper, plant hopper, aleyrodid, mite class etc., drug effect increases substantially, the field consumption of active ingredient reduces, reduce costs, reduce pollution, reduction pest resistance to insecticide, the object that extends the preventive effect time thereby reach.

Beneficial effect of the present invention is:

1, the present invention is made up of the active ingredient of different mechanism of action, and action site increases, and is conducive to overcome and delays the drug-fast generation of insect pest, and having widened insecticidal spectrum;

2, drug effect of the present invention increases substantially, and the preventive effect time is long, and the field consumption of active ingredient declines, and has reduced production and use cost, reduces residue of pesticide and environmental pollution.

Embodiment

Illustrate the present invention below in conjunction with embodiment.

First adopt the composite rear co-toxicity biologicall test of clothianidin and diafenthiuron to test to prove that both strengthen composite rear drug effect.

One, test method

Clothianidin, diafenthiuron are become to series concentration by acetone diluted, for subsequent use.Virulence test adopts stomach toxicity experimental method.Gather fresh cabbage leaves card punch and make leaf dish (d=1.6cm), immerse the liquid 5S having diluted, put into the culture dish (paving same diameter filter paper) of R=9cm, under 25 DEG C of conditions, access hungry 4h 2～3 age cabbage caterpillar, 20 of every processing, every concentration repeats 3 times, establishes blank.Put in illumination box (25 ± 2 DEG C, RH=75%, L:D=14:10).Check dead borer population in 24h, 48h, 72h, 96h.Touch polypide with writing brush, larva is motionless is death.

Two, data survey and statistical analysis

Adopt the abundant co-toxicity coefficient method representation of Sun Yun: experimental data is analyzed by probability value analytical method, by Abbott formula correction lethality, after being converted into percent concentration, extension rate carries out again logarithm conversion, corrected mortality does probit value conversion and obtains virulence regression equation Y=a+bx, then obtains LC50 according to virulence regression equation.Calculate actual toxicity index and the theoretical toxicity index of mixture, and obtain the co-toxicity coefficient CTC of mixture, the synergistic effect of evaluating mixture according to co-toxicity coefficient CTC, determines best proportioning.Computing formula is as follows:

The ratio of toxicity index × B of the ratio+B of toxicity index × A of the theoretical numerical value=A of toxicity index of mixture in mixture in mixture.

According to the symphyogenetic co-toxicity coefficient criteria for classifying of mixed insecticide: co-toxicity coefficient (CTC) >=100 shows as synergistic effect; CTC≤80 show as antagonism; 80 < CTC < 100 show as summation action.

Result of the test is as shown in table 1:

The co-toxicity coefficient of table 1 clothianidin and the composite mixture of diafenthiuron

Data by table 1 can be found out: clothianidin: diafenthiuron=1: 4～7 o'clock co-toxicity coefficients, higher than 100, have synergistic effect, especially at 1: 5～6 o'clock, apparently higher than 120, have obvious synergistic effect.Prove that technical scheme provided by the invention has synergistic effect to cabbage caterpillar.

Below adopt field efficacy small plot experiment method, further prove that clothianidin and diafenthiuron use desinsection is had to synergistic effect in land for growing field crops, and can use in land for growing field crops.

One, experimental condition

1, subjects and trial crops

Subjects: cabbage caterpillar

Trial crops: wild cabbage

2, environmental condition

Field trial is carried out on the crop that insect is caused harm seriously and degree is consistent.Select representationally, physical features is smooth, the outdoor wild cabbage ground of fertility level uniformity.

Two, experimental scheme

1, medicament

1.1, test medicine

The medicament of selecting following examples 1-3 to make.

1.2, contrast medicament

Comparative example 1 medicament: 25% diafenthiuron aqueous suspension agent

Comparative example 2 medicaments: 50% clothianidin water dispersible granules

1.3, blank

If do not use the blank of any medicament

2, community arranges

Arrange community: the community of test medicine, contrast medicament and blank is processed and adopted random district group to arrange.

Community area and repetition: every community area 10m ².

Number of repetition: each processing repeats 4 times.

3, investigation records

3.1, investigation method

In each processing community, adopt 5 samplings of diagonal, 3 blades of every some investigation, selected 15 leaves altogether, listing mark before test.

3.2, control time and number of times

Radix investigation: before dispenser is processed

Investigation for the second time: dispenser is processed after 1d

Investigation for the third time: dispenser is processed after 3d

The 4th investigation: dispenser is processed after 7d

3.3, drug effect computational methods

Drug effect is by calculating with following formula 1, formula 2

---formula 1

---formula 2

4, the impact on crop

4.1, chemical injury of crops is affected

Chemicals treatment district and blank district are compared, evaluate poisoning: plant growth normal, affects without poisoning substantially.

4.2, other biological is affected

On ambient water, soil, air etc., substantially without impact, Oral toxicity is tested, nontoxic to its mouse oral reality.

5, result

Poor by the new multipole of DMRT(Deng Kenshi) method carries out significance test, evaluates preventive effect.

Illustrate the present invention below in conjunction with embodiment.In embodiment, percentage is all weight percentage, and the treatment dosage of field efficacy is effective ingredient consumption.

Embodiment 1:(60% clothianidin diafenthiuron wetting powder)

Component and content: clothianidin, 10%; Diafenthiuron, 50%; Dispersant is selected how sulfonic formaldehyde condensation compound sulphate (NNO), 3% of methyl; Wetting agent is selected with neopelex, 3%; Carrier is selected kaolin, surplus.

The preparation method of embodiment 1 is: the component providing by embodiment and percentage by weight thereof, clothianidin, diafenthiuron, dispersant, wetting agent and carrier are mixed, and after airslide disintegrating mill is pulverized, mix and make wetting powder again.Capital equipment has mixer, airslide disintegrating mill.

Embodiment 2:(70% clothianidin diafenthiuron water dispersible granule)

Component and content: clothianidin, 10%; Diafenthiuron, 60%; Dispersant is selected polycarboxylate, 7%; Wetting agent is selected lauryl sodium sulfate, 3%; Disintegrant is selected corn starch, 15%; Carrier is selected attapulgite, surplus.

The preparation method of above-described embodiment 2 is: the component providing by embodiment and percentage by weight thereof, clothianidin, diafenthiuron, wetting agent, dispersant, disintegrant and carrier are mixed, after airslide disintegrating mill is pulverized, then through adding water mixing, extruder grain, oven dry make water dispersible granules.Capital equipment has mixer, airslide disintegrating mill, comminutor.

Embodiment 3:(40% clothianidin diafenthiuron aqueous suspension agent)

Component and content: clothianidin, 5%; Diafenthiuron, 35%; Dispersant is selected naphthalene sulfonate, 3%; Wetting agent is selected polyoxyethylene nonylphenol ether, 2%; Antifreezing agent is selected ethylene glycol, 4%, and thickener is selected xanthans, 0.1%, and carrier is selected running water, surplus.

Embodiment 4:(50% clothianidin diafenthiuron aqueous suspension agent)

Component and content: clothianidin, 10%; Diafenthiuron, 40%; Dispersant is selected naphthalene sulfonate, 4%; Wetting agent is selected polyoxyethylene nonylphenol ether, 3%; Antifreezing agent is selected ethylene glycol, 4%, and thickener is selected xanthans, 0.5%, and carrier is selected running water, surplus.

The preparation method of above-described embodiment 3 and 4 is: the component providing by embodiment and percentage by weight thereof, clothianidin, diafenthiuron, wetting agent, dispersant, antifreezing agent, thickener and carrier are mixed, through horizontal sand mill wet pulverizing, after particle diameter is qualified, add antifreezing agent and thickener to mix and make aqueous suspension agent.

Result of the test is as shown in table 2.

The field control effectiveness test result of table 2 embodiment 1-3 and comparative example 1-2

Can find out from table 2 result of the test, after 1d, 3d, 7d after medicine, the insect population quantity of each chemicals treatment all significantly reduces, and the control efficiency of embodiment 1-3 medicament is apparently higher than comparative example 1-2 medicament, correcting controling effect is up to 96.99%, minimum 87.43%, be far longer than the drug effect of comparative example 1 medicament the highest 85.54% and comparative example 2 medicaments the highest 86.0%.Show that diafenthiuron and clothianidin compounded pesticides have obvious synergistic effect to insect, and efficiency time is obviously longer than single medicament.In addition, duration of test field observation, embodiment medicament respectively process liquid on plant growth without impact, to beneficial organism safety around, good with Environmental compatibility.As can be seen here, clothianidin and diafenthiuron are composite is a desirable insecticide mixture.

Claims (2)

1. a clothianidin and diafenthiuron complex insecticidal composition, it is characterized in that: its active ingredient is clothianidin and diafenthiuron, the weight ratio of described active ingredient clothianidin and diafenthiuron is 1:5～7, and the formulation of described composition is wetting powder, water dispersible granules or aqueous suspension agent.

2. clothianidin according to claim 1 and diafenthiuron complex insecticidal composition, it is characterized in that, described complex insecticidal composition is aqueous suspension agent, each component machine percetage by weight is clothianidin 5%, diafenthiuron 35%, dispersant naphthalene sulfonate 3%, wetting agent polyoxyethylene nonylphenol ether 2%, antifreeze glycol 4%, thickener xanthans 0.1%, water surplus.