CN102302029A

CN102302029A - Compounded pesticide

Info

Publication number: CN102302029A
Application number: CN201110202747A
Authority: CN
Inventors: 杨会营; 刘晓娇; 吴勇
Original assignee: Beijing Yanhua Yongle Pesticide Co Ltd
Current assignee: Beijing Yanhua Yongle Pesticide Co Ltd
Priority date: 2011-07-19
Filing date: 2011-07-19
Publication date: 2012-01-04

Abstract

The invention relates to a compounded pesticide, wherein the compounded pesticide comprises 1-20% of chlorantraniliprole and 1-30% of metaflumizone. The compounded pesticide has the advantages of high efficiency, low toxicity, long persistence, high quick action, very good preventing and treating effect on plutella xylostella and uneasiness for generating pesticide damage; meanwhile, the generation of resistance to the pesticide is slowed down and the pollution to the environment is reduced.

Description

A kind of compounded pesticides

Technical field

The invention belongs to pesticide field, relate in particular to the compounded pesticides of a kind of Rynaxypyr and metaflumizone.

Background technology

Rynaxypyr (Chlorantraniliprole); It is a kind of brand-new low toxicity efficient pesticides of du pont company exploitation; The Rynaxypyr high-efficiency broad spectrum; Lepidopterous Noctuidae, Pyralidae, moth fruit moth section, tortricid, miller section, diamond-back moth section, Gelechidae, Gracilariidae etc. all there is excellent control effect; Can also control the coleoptera Culculionidae; Chrysomelidae, diptera Agromyzidae, multiple non-lepidoptera pest such as Bemisia tabaci.According to preliminary on probation, very good really to lepidopterous insect effect, the control time is very long.

Metaflumizone (metaflumizone) is a kind of brand-new compound that BASF Aktiengesellschaft and Japanese agricultural chemicals company develop jointly, and belongs to the semicarbazones insecticides.The mechanism of action of metaflumizone is unique, and itself has insecticidal activity, does not need bioactivation, does not have cross resistance with existing each insecticides.Metaflumizone can be prevented and treated larva, the adult of lepidoptera pest and some coleoptera effectively, can also be used to prevent and treat insects such as ant, termite, fly class, cicada dung beetle.Metaflumizone is a kind of insecticide of brand-new mechanism of action, and on the acceptor attached to sodium-ion channel, it is current to hinder sodium ion, does not have cross resistance with the compound of chrysanthemum ester class or other kinds.This medicine mainly is to get food through insect to get into and stomach toxicity to take place in its body kill off the insect pests, and action of contace poison is less, no systemic action.This medicine all has the better prevention effect for target pest, the larva in each length of time; This medicine gets into polypide behind the insect's food-taking; Through the sodium-ion channel on the mechanism of action blocking-up insect neuron axon film of uniqueness; Make sodium ion can not pass through axolemma; And then inhibition nerve impulse makes excessive the loosening, benumb of polypide; Behind the several hrs, insect promptly stops to get food, and is dead in one to three day.

Because agricultural pests causes very big loss to crops production every year; Consider the agricultural chemicals of long-term use single variety; Impel insect to produce resistance easily; Environment is caused bigger pollution; Field trial shows; The existing medicament another kind of mixed pesticide different with mechanism of action; Can not only postpone resistance produces; Can also improve drug effect and residual period, reduce usage amount, reduce cost; Therefore we carry out composite with Rynaxypyr and metaflumizone; Improve insecticidal effect, enlarge insecticidal spectrum, reduce environmental pollution simultaneously.

Summary of the invention

The purpose of this invention is to provide a kind of high-efficiency low-toxicity, lasting effect is long, quick-acting is high, insecticidal spectrum is wide, the Pesticidal combination of environmental protection.Be specifically related to the pesticidal preparations that Rynaxypyr and metaflumizone are basis.

Above-mentioned compounded pesticides contains Rynaxypyr 1%-20%, metaflumizone 1%-30%.

Utilize the described compounded pesticides of foregoing invention, be equipped with the known auxiliary agent of those skilled in that art, can process formulation of the present invention with those skilled in that art's known method, its formulation that can process is suspending agent, water dispersible granules.

Advantage that the present invention has and beneficial effect: 1. high-efficiency low-toxicity; 2. quick-acting, hold to imitate and take into account; 3. noresidue, nuisanceless, environmentally safe; 4. use compound formulation, two kinds of active ingredients also have synergistic effect, and consumption reduces during all than single use, thereby have improved the insecticidal effect of active ingredient, have increased safety, have reduced environmental pollution.

Embodiment

Following instantiation is in order to further explain the present invention, but the present invention absolutely not only is limited to following these embodiment.Percentage all is weight percentage in the prescription, and employed former medicine and auxiliary agent are other producers and buy.

Formulation examples is following:

1, the preparation of suspending agent

According to the prescription requirement, be medium with water, will grind in the adding sand mills such as active ingredient, wetting agent, dispersant, thickener, defoamer, the back adds emulsification in the high-shear emulsifying still, makes suspending agent.

Prescription one (10% suspending agent)

Prescription two (20% suspending agents)

Prescription three (16% suspending agents)

2, the preparation of water dispersible granules

Active ingredient, wetting agent, dispersant, adhesive, filler etc. are fully mixed in the ratio of prescription, after ultrafine crusher is pulverized, add an amount of purified water, make water dispersible granules through kneading, granulation, drying, screening.

Prescription four (25% water dispersible granules)

Prescription five (20% water dispersible granules)

Diamond-back moth (Plutella xylostella) belongs to Lepidoptera diamond-back moth section, another name: little blue or green worm, pointed at both ends.The worldwide insect that migrates, crucifers such as main harm wild cabbage, purple cabbage, broccoli, a kind of sedge dish, leaf mustard, cauliflower, Chinese cabbage, rape, radish.The harm characteristics: first instar larvae is only got food mesophyll, stays epidermis, on the dish leaf, forms transparent one by one spot, and blank, 3～4 instar larvaes can be eaten into the dish leaf hole and incise, and full leaf is eaten and reticulated when serious.Often concentrate lobus cardiacus to cause harm in seedling stage, the influence bag heart.In the strain of reserving seed for planting, endanger tender stem, young pod and seed.Rynaxypyr and metaflumizone are two kinds of compositions that insecticidal activity is very high, according to their the effect characteristics and mechanism of action, the object of indoor biometrics are decided to be diamond-back moth.

The method of indoor biometrics is: adopt capillary trace drop method, capillary trace dropper volume is 1.0 μ L.With micro-dropper with soup by a drop in the back side of diamondback moth larvae, each concentration is handled about 30 larva, the culture dish that it is 9cm that per 5 larvas are put into a diameter, the built-in a small amount of feed of ware supplies to get food, in addition with 30 larvas of acetone drop as contrast.Larva after treatment still is placed in the receptacle, checks lethality behind the 48h.Data are handled with the SPSS software statistics.Obtain toxicity regression formula, the lethal concentration of 50, correlation coefficient etc., and obtain co-toxicity coefficient with the abundant method of Sun Yun.

The co-toxicity of mixture preparation adopts the abundant co-toxicity coefficient method representation of Sun Yun:

The theoretical toxicity index A=∑ of mixture preparation (toxicity index of certain medicine * percentage of this pharmaceutically active ingredient in mixture).

C was synergistic effect greater than 120 o'clock, less than 80 o'clock be antagonism, be addition during 80-120.

The different proportionings of table 1 are to the toxicity test result of diamond-back moth

Table 28% Rynaxypyr is tested the test of giving birth to of diamond-back moth

Dosage (mg/L)	The examination borer population	Death toll	Lethality (%)	Corrected mortality (%)
					5	100	18	18	18
10	100	29	29	29
					20	100	37	37	37
40	100	52	52	52
					50	100	68	68	68
CK	100	0

Table 320% metaflumizone is tested the test of giving birth to of diamond-back moth

Dosage (mg/L)	The examination borer population	Death toll	Lethality (%)	Corrected mortality (%)
					5	100	22	22	22
10	100	26	26	26
					20	100	39	39	39
40	100	50	50	50
					50	100	66	66	66
CK	100	0

The test of giving birth to of a pair of diamond-back moth of table 4 prescription is tested

Dosage (mg/L)	The examination borer population	Death toll	Lethality (%)	Corrected mortality (%)
					5	100	33	33	33
10	100	55	55	55
					20	100	61	61	61
40	100	70	70	70
					50	100	80	80	80
CK	100	0

The test of giving birth to of two pairs of diamond-back moths of table 5 prescription is tested

Dosage (mg/L)	The examination borer population	Death toll	Lethality (%)	Corrected mortality (%)
					5	100	28	28	28
10	100	49	49	49
					20	100	60	60	60
40	100	72	72	72
					50	100	86	86	86
CK	100	0

The test of giving birth to of three pairs of diamond-back moths of table 6 prescription is tested

Dosage (mg/L)	The examination borer population	Death toll	Lethality (%)	Corrected mortality (%)
					5	100	32	32	32
10	100	49	49	49
					20	100	69	69	69
40	100	83	83	83
					50	100	90	90	90
CK	100	0

The test of giving birth to of four pairs of diamond-back moths of table 7 prescription is tested

Dosage (mg/L)	The examination borer population	Death toll	Lethality (%)	Corrected mortality (%)
					5	100	36	36	36
10	100	67	67	67
					20	100	81	81	81
40	100	92	92	92
					50	100	98	98	98
CK	100	0

The test of giving birth to of five pairs of diamond-back moths of table 8 prescription is tested

Dosage (mg/L)	The examination borer population	Death toll	Lethality (%)	Corrected mortality (%)
					5	100	33	33	33
10	100	50	50	50
					20	100	70	70	70
40	100	82	82	82
					50	100	92	92	92
CK	100	0

It is bright to analyze above-mentioned tables of data, and when Rynaxypyr and metaflumizone different proportion were composite, the co-toxicity coefficient of prescription had obvious synergistic effect all greater than 120.It is one the most obvious with prescription four synergistic effect wherein to fill a prescription, and its co-toxicity coefficient is for being respectively 150.28 and 141.89.

Through the indoor biometrics test, select the field trial that the bigger prescription of CTC one, prescription four and the less prescription three of CTC are prevented and treated diamond-back moth, confirm the effect of prescription control diamond-back moth; Simultaneously through with the effect comparison of Rynaxypyr, the agent of metaflumizone list, verify the synergistic effect after composite.Concrete test method, data are following:

Test the test of pesticide effectiveness that one: 10% Rynaxypyr metaflumizone SC, 25% Rynaxypyr metaflumizone WDG, 16% Rynaxypyr metaflumizone SC do the field control diamond-back moth, use 8% Rynaxypyr SC and 15% metaflumizone SC simultaneously as contrast.The test place is Shouguang City, Weifang Prefecture, Shandong Province, and the time is on April 19th, 2011, test totally four processing, and each handles three repetitions, sub-district randomized arrangement, sub-district area 100m ², the planting habit of all sub-districts all planting habit with local is identical, and is record dispenser same day and all synoptic data thereafter, specific as follows:

Table 9 duration of test meteorological data

The investigation standard is: 7d gets killed strain 50 strains at random behind the medicine in each sub-district, and the life or death number of bat dish method metering nymph calculates lethality; 150 clumps of parallel sampling method samplings are adopted in 15d, the every sub-district of 25d behind the medicine, investigate withered calculation, calculate withered heart rate and seedling protecting effect at last.Specifically data (data are the mean value of three repetitions) are as follows:

The effect table of table 1010% Rynaxypyr metaflumizone SC and other chemical control diamond-back moths

Annotate: data are the mean value that repeats for 3 times in the table, and letter is all Duncan testing differentia remarkable time mutually: in April, 2011 place: Shouguang, Shandong

Can find out from above data; Under the situation of using same dose; 25d behind medicine; The control rate of 10% Rynaxypyr metaflumizone SC, 25% Rynaxypyr metaflumizone WDG reaches 84.45% and 83.12% respectively; Effect when being higher than 8% Rynaxypyr SC and 15% metaflumizone SC use far away, difference is extremely remarkable.Simultaneously, 16% Rynaxypyr metaflumizone SC 25d after medication, its control efficiency to diamond-back moth on the vegetables has also reached 79.62%, and the preventive effect when only using a kind of single agent is significantly improved.Simultaneously, above-mentioned field trial also match (CTC is big more, and synergistic effect is big more) with the indoor biometrics test for data.

Find out that thus prescription one is best with the control efficiency of prescription four, but the two difference is not remarkable.Because suspending agent is the novel formulation that recent years, country promoted, it has more added water base phase constituent, thus friendly more to environment, consider product cost simultaneously, think that prescription one is even more ideal.

10% Rynaxypyr metaflumizone SC (prescription one) is carried out further test, filtered out the optium concentration of control diamond-back moth.Experimental scheme 10g/ mu, 12g/ mu, 14g/ mu and 4 concentration tonsures of 16g/ mu are also done contrast with the effect of 15% metaflumizone (10g/ mu), 8% Rynaxypyr (10g/ mu); Test method and investigation method are the same, and specifically data (mean values of three repetitions) are as follows:

Table 11 prescription one different amounts control diamond-back moth effect table

Can find out from the result of the above-mentioned test of pesticide effectiveness; Increase along with the prescription dosage; Drug effect also increases to some extent; 10% Rynaxypyr metaflumizone SC consumption is a 14g/ mu; The seedling protecting effect of 25d is 86.77% behind the medicine, and apparently higher than 15% metaflumizone SC and 8% Rynaxypyr SC, difference is extremely remarkable; Simultaneously, seedling protecting effect is higher than 10g/ mu and 12g/ mu; When the mu consumption was 16g/ mu, 25 days seedling protecting effect is 87.01% after medication, and was not remarkable with the seedling protecting effect difference of mu consumption 14g.Therefore, under the prerequisite of considering the mu cost, should advocate mu usage amount is 14g/ mu.

Claims

1. a compounded pesticides is characterized in that, said Pesticidal combination active component is made up of Rynaxypyr and metaflumizone.

2. compounded pesticides according to claim 1 is characterized in that, chloride worm benzamide 1%～20%, metaflumizone 1%～30%.

3. compounded pesticides according to claim 2 is characterized in that said compounded pesticides can be made into suspending agent, water dispersible granules.