CN1895045A - Insecticide composition containing fluoinsect-diazane and perimidine-imide - Google Patents

Abstract

A composite insecticide for preventing and eliminating flea beetle and plutella xylostella is composed of fipronil and acetamiprid.

Description

The composition that contains the insecticidal action of fluorine worm nitrile and Acetamiprid

Technical field

The composition pesticide that this invention relates to is to be active ingredient with fluorine worm nitrile and Acetamiprid, prevents and treats the insect on the agricultural.Especially flea beetle and the diamond-back moth to crop in cruciferae has special efficacy.

Technical background

Fluorine worm nitrile is a kind of Phenylpyrazole insecticides, and the desinsection wide spectrum based on stomach toxicity, has certain tagging and systemic action to insect concurrently.To aphid, leafhopper, diamond-back moth, plant hopper, flea beetle has excellent insecticidal activity.

Acetamiprid is a kind of novel pesticide, is used to prevent and treat agricultural and goes up important insect such as aphid, thrips, aleyrodid, flea beetle, diamond-back moth, cabbage caterpillar etc.

In the real process of agricultural production, the problem that pest control is easy to generate most is the generation of pest resistance to insecticide.Diamond-back moth is a kind of common insect, and the main harm brassicaceous vegetable is often caused crushing disaster.Especially in the zone, south, diamond-back moth is annual takes place.In some serious zone, the Methomyl of the sumicidin in conventional pesticide composition such as the pyrethroid, the phoxim in the organic phosphor, carbamates etc., control has not almost had any effect separately.

Flea beetle claims phyllotreta striolata again, also is a kind of common insect, and the main harm brassicaceous vegetable is often caused heavy losses.At southern china, flea beetle is annual to be taken place.At some serious zone takes place, commonly used being used to prevents and treats the medicament such as the dichlorvos of flea beetle, and cypermethrin etc. use also do not had what effect substantially separately.

Go up the insect that produces resistance for control agricultural, a kind of way is to release the new component that new and existing kind do not have cross resistance.But, the development cost height of new active ingredient, the construction cycle is long, and all produces the speed of resistance forever less than insect.Other method such as crop allocation adjustment, different agricultural chemicals are rotated etc., in the process of practical operation, are difficult to really play obvious effects.

The composition of different cultivars carries out composite, is control resistant insect or the very common way of evil mite.Heterogeneity is carried out composite, according to the effect of practical application, judge certain composite be synergy, add and or antagonism.Compound synergic is well filled a prescription, owing to obviously improved actual control efficiency, reduced the usage amount of agricultural chemicals, thereby delayed the generation of pest resistance to insecticide greatly, and be the important means of integrated control insect.Still nobody reported in the composite and application of fluorine worm nitrile and Acetamiprid at present.

Summary of the invention

Go up diamond-back moth and the flea beetle that produces resistance in order to prevent and treat agricultural, we have carried out mutual composite synergy research with compositions such as fluorine worm nitrile, Acetamiprids.It is tested object that diamond-back moth, the phyllotreta striolata in field are adopted in test, and concrete grammar is:

1) the diamond-back moth test medicine provides former medicine for producer, is mixed with the preparation that needs by my research department of company.The examination worm is the pickles chrysalis of picking up from the field, the indoor feeding three generations, select the growth even one to third-instar larvae, the culture dish that the diameter of access storing cabbage leaf (black leaf Chinese cabbage, outermost layer blade) is 9 centimetres, every ware connects 30, every processing connects three wares, spray under 50PSI pressure with the POTT spray tower, spray a ware at every turn, 3 milliliters of every ware spraying liquids.General each processing is provided with 6-7 concentration gradient.The culture dish of handling is put into 25 ℃, cultivates in the 12H/12H illumination box, checks the survival borer population in 48 hours, calculates the insect population rate that goes down.Blank spray equivalent clear water.Calculate virulence equation and lethal concentration of 50 LC50 with method of least squares, calculate the toxicity index of medicament and the co-toxicity coefficient of using with (CTC value) according to the abundant method of Sun Yun, CTC value greater than 100 be synergistic effect, equaling 100 is addition, is antagonism less than 100.

2) the phyllotreta striolata test medicine provides former medicine for producer, is mixed with the preparation that needs by my research department of company.The examination worm is the phyllotreta striolata adult of picking up from the field, and indoor feeding is selected the adult of growth uniformity after one week, and 15 centimetres of the diameters of access storing cabbage heart blade are in the dark 30 centimetres cylinder.30 flea beetles of every socket joint.Bind up with gauze and continue to employ the osculum that flea beetle can be gone out suddenly of rubber band tying below the cylinder.Under 50PSI pressure, aim at the cylinder internal spraying with the POTT spray tower.Cylinder of each spray, 5 milliliters of every spraying liquids.Sprayed and built above the cylinder, after static 10 minutes flea beetle has been shaked out from lower opening, with being subjected to medicine cabbage heart leaf to place 200 milliliters triangular flask to cultivate.Blank spray equivalent clear water.General each processing is provided with 6-7 concentration gradient.The triangular flask of handling is put into 25 ℃, cultivates in the 12H/12H illumination box, checks the survival borer population in 48 hours, calculates the insect population rate that goes down.Statistical method is the same.

3) measurement result of diamond-back moth, flea beetle see Table 1 respectively, table 2.

Table 1 different disposal is to the toxicity test result of diamond-back moth

Handle	LC50(PPM)	Co-toxicity coefficient
			Fluorine worm nitrile 10+ Acetamiprid 1	0.42	300.6
Fluorine worm nitrile 8+ Acetamiprid 3	0.28	331.8
			Fluorine worm nitrile 6+ Acetamiprid 5	0.36	402.93
Fluorine worm nitrile 4+ Acetamiprid 7	0.48	736.16
			Fluorine worm nitrile 2+ Acetamiprid 9	0.49	722.84
Fluorine worm nitrile 1+ Acetamiprid 10	1.54	402.25
			Fluorine worm nitrile	0.66
Acetamiprid	56.41

Table 2 different disposal is to the toxicity test result of flea beetle

Handle	LC50(PPM)	Co-toxicity coefficient
			Fluorine worm nitrile 10+ Acetamiprid 1	1.31	162.56
Fluorine worm nitrile 8+ Acetamiprid 3	0.55	399.52
			Fluorine worm nitrile 6+ Acetamiprid 5	0.25	903.55
Fluorine worm nitrile 4+ Acetamiprid 7	0.32	758.42
			Fluorine worm nitrile 2+ Acetamiprid 9	0.37	673.89
Fluorine worm nitrile 1+ Acetamiprid 10	0.35	720.09
			Fluorine worm nitrile	2.10
Acetamiprid	2.61

As seen from Table 1, fluorine worm nitrile and Acetamiprid are composite, and diamond-back moth is had very high synergistic effect.Co-toxicity coefficient can reach more than 700 as seen from Table 2, and fluorine worm nitrile and Acetamiprid are composite, the synergistic effect very high to phyllotreta striolata.Co-toxicity coefficient can reach 900.

Embodiment

Application example one: diamond-back moth

Press fluorine worm nitrile 3%, Acetamiprid 3%, emulsifier 1,601 8%, emulsifier 500#6%, surplus is the mixture of cyclohexanone and isopropyl alcohol, is mixed with missible oil.This prescription is by 2000 times of dilution sprayings, behind the medicine 72 hours control efficiency be 97.2%, 5% fluorine worm nitrile missible oil and 5% acetamiprid EC according to using with quadrat method, 72 hours preventive effects are respectively 79.3% and 23.0% behind the medicine.

Application example two: flea beetle

Press fluorine worm nitrile 1%, Acetamiprid 5%, emulsifier 1,601 8%, emulsifier 500#6%, surplus is the mixture of cyclohexanone and isopropyl alcohol, is mixed with missible oil.This prescription is by 3000 times of dilution sprayings, behind the medicine 72 hours control efficiency be 92%, 5% fluorine worm nitrile missible oil and 5% acetamiprid EC according to using with quadrat method, 72 hours preventive effects are respectively 63.3% and 72.0% behind the medicine.

Claims (3)

1, a kind of composition pesticide is made up of fluorine worm nitrile and Acetamiprid, and the ratio of fluorine worm nitrile and Acetamiprid (by quality) is 1: 10-10: between 1.

2, the composition of mentioning in the claim 1 is made different application forms during practical application, comprise missible oil, micro emulsion, water and milk, suspending agent, wetting powder, water dispersible granules.

3, the composition of mentioning in the claim 1, the mass percentage content of fluorine worm nitrile and the two accumulation of Acetamiprid is between 1%-99%.