CN102326577A

CN102326577A - Pesticide composition

Info

Publication number: CN102326577A
Application number: CN201110318570A
Authority: CN
Inventors: 王明康; 杨会营; 刘晓娇; 吴勇; 王占娣; 张�浩
Original assignee: Beijing Yanhua Yongle Pesticide Co Ltd
Current assignee: Beijing Yanhua Yongle Pesticide Co Ltd
Priority date: 2011-10-19
Filing date: 2011-10-19
Publication date: 2012-01-25

Abstract

The invention relates to a pesticide composition which comprises two active ingredients of cyanogen insect amide and indoxacarb. The pesticide composition is used for preventing and treating insects in agriculture, and especially has an obvious prevention and treating effect to plutella xylostella. The pesticide composition is efficient, low toxic, is wide in insecticidal spectrum, the generation of drug resistant is slowed down as well as the dosage is reduced, the pollution to environment is reduced, and insecticide harm is difficult to generate.

Description

Pesticidal combination

Technical field

The invention belongs to pesticide field, relate in particular to the Pesticidal combination of cyanogen insect amide and indenes worm prestige.

Background technology

Cyanogen insect amide also is bromine cyanogen insect amide (cyantraniliprole); It is E.I.Du Pont Company's second generation ryania acceptor inhibitor insecticides that success is developed after the chlorine insect amide; Cyanogen insect amide is to form through the various polar groups that change on the phenyl ring; Have more efficiently, applicable crops is more extensive, can effectively prevent and treat Lepidoptera, Semiptera and coleopteran pest.Cyanogen insect amide has stronger permeability, and medicament can pass stem's epidermal cell and get into xylem, conducts to other positions along xylem.Cyanogen insect amide can be used for the pest control of crops such as leguminous plant, cotton, paddy rice, beet, soybean, brassicaceous vegetable, muskmelon.

Indenes worm prestige (indoxacarb) is du pont company (E.I.du Pont de Nemours and Company) a kind of insecticide of Development and Production recently.Sodium-ion channel through in the blocking-up insect nerve cell makes the nerve cell loss of function.Its insecticidal mechanism is unique, does not have cross resistance with other insecticides.Can effectively prevent and treat grain, cotton, really, the various pests on the crop such as vegetables.Be applicable to beet armyworm, diamond-back moth, cabbage caterpillar, prodenia litura, tomato moth, cotton bollworm, oriental tobacco budworm, leaf rollers, leafhopper, spark, colorado potato beetle on the crops such as control wild cabbage, flower coconut palm class, cabbage mustard, tomato, capsicum, cucumber, little cucumber, eggplant, lettuce, apple, pears, peach, apricot, cotton, potato, grape.

Use cyanogen insect amide or indenes worm prestige separately, exist drug cost bigger at present, quick-acting or lasting effect are relatively poor, and use single agent to be easy to generate pesticide resistance, and long-term the use caused bigger pollution to environment.In order to develop quick-acting and lasting effect is higher, lower-cost agricultural chemicals, we have carried out indoor biometrics and field efficacy experiment, filter out cyanogen insect amide and the composite prescription of indenes worm prestige, and it has obvious synergistic effect.

Summary of the invention

The purpose of this invention is to provide that a kind of insecticidal activity is efficient, lasting effect is long, the Pesticidal combination of the high and low poison of quick-acting, environmental protection.Concrete relate to cyanogen insect amide and indenes worm prestige is the pesticidal preparations of basis.

Above-mentioned Pesticidal combination contains cyanogen insect amide 1%～25%, indenes worm prestige 1%～15%.

Utilize the described insecticides of the invention described above, 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. the desinsection scope is wide; 2. quick-acting is strong, the lasting period is long; 3. low toxicity, noresidue, nuisanceless, environmentally safe; 4. use compound formulation, two kinds of insecticides also have synergistic effect, and the consumption of two kinds of insecticides reduces during all than single use, thereby has improved insecticidal effect, has increased safety, has 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, with grinding in the adding sand mills such as active ingredient, wetting agent, dispersant, thickener, antifoaming agent, the back adds emulsification in the high-shear emulsifying still, makes suspending agent.

Prescription one (5% suspending agent)

Prescription two (8% 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 three (20% water dispersible granules)

Prescription four (16% water dispersible granules)

Prescription five (30% 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 the wild cabbage of mainly causing harm, purple cabbage, broccoli, a kind of sedge dish, leaf mustard, cauliflower, Chinese cabbage, rape, radish.Characteristics cause harm: first instar larvae is only got food mesophyll, stays epidermis, on the dish leaf, forms transparent one by one spot, blank, and 3～4 instar larvaes can be eaten into the dish leaf hole and incise, and full leaf is eaten and is 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.Cyanogen insect amide and indenes worm prestige 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 2 cyanogen insect amide is tested the test of giving birth to of diamond-back moth

Dosage (mg/l)	The examination borer population	Death toll	Lethality (%)	Corrected mortality (%)
					50	100	24	24	24
40	100	37	37	37
					20	100	44	44	44
10	100	59	59	59
					5	100	70	70	70
CK	100	0

Table 3 indenes worm prestige is tested the test of giving birth to of diamond-back moth

Dosage (mg/l)	The examination borer population	Death toll	Lethality (%)	Corrected mortality (%)
					50	100	22	22	22
40	100	35	35	35
					20	100	56	56	56
10	100	64	64	64
					5	100	72	72	72
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 (%)
					50	100	18	18	18
40	100	33	33	33
					20	100	42	42	42
10	100	57	57	57
					5	100	66	66	66
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 (%)
					50	100	26	26	26
40	100	42	42	42
					20	100	54	54	54
10	100	75	75	75
					5	100	82	82	82
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 (%)
					50	100	35	35	35
40	100	53	53	53
					20	100	76	76	76
10	100	89	89	89
					5	100	96	96	96
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 (%)
					50	100	28	28	28
40	100	51	51	51
					20	100	76	76	76
10	100	88	88	88
					5	100	95	95	95
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	43	43	43
10	100	54	54	54
					20	100	81	81	81
40	100	90	90	90
					50	100	96	96	96
CK	100	0

Analyze above-mentioned data, measure the result and show that when cyanogen insect amide and indenes worm prestige different proportion were composite, the co-toxicity coefficient of prescription all had obvious synergistic effect all greater than 120.It is one maximum with prescription two co-toxicity coefficients wherein to fill a prescription, and is respectively 160.07 and 168.96.

Through the indoor biometrics test, select the field trial that the bigger prescription of CTC one, prescription two and the less prescription five 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 the single agent of cyanogen insect amide, indenes worm prestige, verify the synergistic effect after composite.Concrete test method and data are following:

Test the test of pesticide effectiveness that one: 5% cyanogen insect amide indenes worm prestige SC, 8% cyanogen insect amide indenes worm prestige SC, 30% cyanogen insect amide indenes worm prestige WDG do the field control diamond-back moth, use 10% indenes worm prestige SC, 10% cyanogen insect amide SC simultaneously as contrast.The test place is the separated town of Hanchuan City Liu of Xiaogan Prefecture, Hubei Province, and the time is on June 14th, 2010, test totally four processing; Each handles three repetitions; The sub-district randomized arrangement, sub-district area 88m2, the planting habit of all sub-districts all planting habit with local is identical; 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 diamondback moth larvae is looked in stripping, 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 10 5% cyanogen insect amide indenes worm prestige 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 June, 2010 place: the Hubei Xiaogan

Can find out from above data; Under the situation of identical using dosage; 25d behind medicine; The control rate of 5% cyanogen insect amide indenes worm prestige SC, 8% cyanogen insect amide indenes worm prestige SC reaches 83.66% and 85.67% respectively, the effect when being higher than 10% cyanogen insect amide SC and 10% indenes worm prestige SC list agent use far away, and difference is extremely remarkable.Simultaneously, 30% cyanogen insect amide indenes worm prestige 25d after medication, its control efficiency to diamond-back moth on the vegetables has also reached 74.84%, 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.

Can find out that the control efficiency of prescription two is superior to filling a prescription one, two kinds of employed costs of prescription are more or less the same simultaneously, and factors such as comprehensive drug are considered, think that prescription two is even more ideal.

8% cyanogen insect amide indenes worm prestige SC (prescription two) is carried out further test, filtered out the optium concentration of control diamond-back moth.Experimental scheme 8g/ mu, 10g/ mu, 12g/ mu and 4 concentration gradients of 14g/ mu are also done contrast with the effect of 8% cyanogen insect amide SC (10g/ mu), 8% indenes worm prestige SC (10g/ mu); Test method and investigation method are the same, and specifically data (mean values of three repetitions) are as follows:

Table 11 prescription two 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, and 8% cyanogen insect amide indenes worm prestige SC consumption is a 12g/ mu, and the seedling protecting effect of 25d is 85.74% behind the medicine; Apparently higher than the effect of 8% cyanogen insect amide SC and the single agent of 8% indenes worm prestige SC, difference is extremely remarkable; The mu consumption is when being 14g/ mu, and 25 days seedling protecting effect is 86.22 after medication, roughly the same with 12g/ mu, and difference is not remarkable.Therefore, under the prerequisite of considering the mu cost, should advocate mu usage amount is 12g/ mu.

Claims

1. a Pesticidal combination is characterized in that, said Pesticidal combination active component is made up of cyanogen insect amide and indenes worm prestige.

2. Pesticidal combination according to claim 1 is characterized in that, contains cyanogen insect amide 1%～25%, indenes worm prestige 1%～15%.

3. according to claim 1 or the described Pesticidal combination of claim 2, it is characterized in that said Pesticidal combination can be made into suspending agent, water dispersible granules.