CN102613234A - Microemulsion of lufenuron and nitenpyram - Google Patents

Abstract

The invention relates to an agricultural insecticidal composition, in particular to an insecticidal composition containing lufenuron and nitenpyram as well as organic silicon synergistic agent. The microemulsion of the lufenuron and nitenpyram comprises following raw materials by weight percent: 8 percent of lufenuron, 12 percent of nitenpyram, 5 percent of organic silicon, 5 percent of methylbenzene, 5 percent of diphenyl benzaldehyde polyethenoxy ether, 6 percent of alkylphenol polyethenoxy ether, 2 percent of propylene glycol and balance of water, and the raw materials are placed into a high-shearing mixing kettle to be mixed according to a conventional method for preparing an aqueous agent to produce microemulsion with 8 percent of lufenuron and 12 percent of nitenpyram. A novel compound farm chemical preparation with low toxicity and high efficiency is researched and developed. Under the situation that the dosage is not increased, the drug effect is improved, the drug fastness of insect pests can be retarded, and influence of the insecticidal composition on the human beings, the environment and the crops can be reduced. The microemulsion product has a good effect on controlling white flies, plant hoppers, leaf hoppers, phralidid caterpillar and the like on paddy rice, vegetables, melons and fruits.

Description

The microemulsion of Acarus tritici urea and Nitenpyram

Present patent application is an application for a patent for invention (application number: 200810163725.7 applyings date: 2008-12-31, invention and created name: the dividing an application Pesticidal combination that contains Acarus tritici urea and Nitenpyram and organosilicon synergist).

Technical field

The present invention relates to a kind of agricultural insecticidal composite, relate in particular to the Pesticidal combination that contains Acarus tritici urea and Nitenpyram and organosilicon synergist.

Background technology

At present, human environmental problem is paid much attention to, and then had higher requirement to the toxicity of agricultural chemicals and to the influence of environment, high malicious organophosphorous pesticide is because toxicity and environmental problem and be eliminated gradually.Research and develop many medicaments new and effective, low toxicity in recent decades and replaced high malicious organophosphorous pesticide.China's pesticide species and formulation are a lot, and some has caused severe contamination harm to ecotope, and pesticide efficacy is low, and the residue of pesticide time is long, and not easy-clear is arranged, and the physical and mental health of numerous people is had certain defectives such as influence.

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 of new active ingredient is high, and the construction cycle is long, and forever all less than insect generation resistance speed.Therefore, consistent for controlling object, but the medicament of the different heterogeneity of the mechanism of action is mixed, and is a kind of best selection of doing, if reasonable proportioning is arranged, usually can produce synergistic effect, makes control efficiency significantly be superior to the effect of two kinds of single agent.

Often there is defective in various degree in the insecticide that contains the single-activity component on agricultural insect pests control: use insect to be easy to generate pesticide resistance continuously; Access times are many can to cause pollution of many environment or the like; And be mixed through the medicament of two kinds of different active components of the mechanism of action, can effectively delay the generation of pest resistance.The synergistic effect that utilizes two kinds of different active components of the mechanism of action to be mixed and to produce simultaneously can improve preventive effect, reduces the use of active ingredient, practices thrift cost, reduces the influence to environment.

Summary of the invention

The technical problem that the present invention will solve is shortcomings such as the prior art cost is high, control efficiency is single, be easy to generate resistance, usage amount is big for overcoming, provide a kind of use cost low, long to human body, environmental friendliness, lasting period, be difficult for producing resistance and improved the Acarus tritici urea of effective ingredient availability and the Pesticidal combination of Nitenpyram and organosilicon synergist simultaneously again.

The present invention solves the problems of the technologies described above through following technical proposals: the Pesticidal combination that contains Acarus tritici urea and Nitenpyram and organosilicon synergist; It comprises Acarus tritici urea, Nitenpyram, organosilicon synergist and other auxiliary agent, excipient, and wherein the percentage of each ingredients constitute gross weight is:

The Acarus tritici urea accounts for 0.1%～30%;

Nitenpyram accounts for 0.5～70%;

Organosilicon accounts for 0.1%～30%;

Auxiliary agent accounts for 10%～50%;

Excipient accounts for 5%～50%.

As preferably, said organosilicon is meant the organic silicon surfactant that contains trisiloxanes or modification trisiloxanes structure, comprises single organosilicon, or two kinds and above organic silicon compound or organosilicon and other auxiliary agent is composite.

As preferably, said auxiliary agent is to comprise in APES (OP-9-15), NPE phosphate (NPEP04), APES sulfosuccinate disodium (2020), soil temperature 20-24 (T-20-24), EO-PO block type surfactant (EPE), castor oil polyoxyethylene ether (EC-90-100), styrene phenol formaldehyde resin APEO (peaceful breast), diphenyl biphenyl aldehyde APEO (farming breast), cinnamic aldehydes phenol APEO (603#), the AEO (A-105) one or more.

As preferably, said excipient comprises one or more in xylol, propane diols, toluene, solvent naphtha, diatomite, potter's clay, white carbon black, water, glauber salt, the dextrin.

As preferably, the preparation formulation can be missible oil, aqua, microemulsion, aqueous emulsion, wetting powder, water dispersible granules, suspending agent or plant the clothing agent.

Acarus tritici urea (Lufenuron), chemical name: RS)-1-[2,5-two chloro-4-(1,1,2,3,3,3-hexafluoro propoxyl group) phenyl]-3-(2, the 6-difluoro benzoyl) urea.Be by the exploitation of Switzerland Syngenta Co.,Ltd, CAS:103055-07-8, wherein 5% missible oil commodity U.S.A by name removes.

The Acarus tritici urea belongs to benzoyl area kind and kills mite, insecticide, and a kind of insect growth regulator, IGR is a chitin synthesis inhibitor.Be mainly used in control noctuid, cotton bollworm, lima bean pod borer, thrips, rust mite, leaf miner, plant hopper, leafhopper etc.Have stomach toxicity, action of contace poison, have unique insecticidal mechanism: suppress the insect decortication, desinsection, to kill ovum effective, is characterized in: 1. low toxicity is fit to non-polluted farm product production; 2. all effective to worm's ovum, big or small instar, the lasting period reaches 14 days; 3. permeability is strong, positive spray medicine, the dead worm in the back side, dead ovum; 4. resistance of rainwater washing against spraying the back 15 minutes rainy drug effects that do not influence.

In China; Because Acarus tritici urea import price is high; Usable floor area is confined on the high part fruit and vegetables of economic value added; The application area is less, can not in the crop pests control, use more widely, and the less control of insect that is applied on the field crops such as paddy rice, wheat of document at home and abroad of Acarus tritici urea.

Nitenpyram (Nitenpyran), chemical name: (E)-N-(6-chloro-3-picolyl)-N-ethyl-N ＇-methyl-2-nitro ethenylidene diamines.This kind is by the exploitation of Japanese Wu Tian company, CAS:150824-47-8.

Nitenpyram belongs to the nicotimine insecticides; Have unique chemical and biological property; Cynapse acceptor to insect has the nerve block effect; Various aphids, aleyrodid, rice-leaf hopper are shown remarkable activity, and have efficient, low toxicity, interior suction, no cross resistance simultaneously, crop had advantage such as poisoning, be widely used in paddy rice, fruit tree, vegetables and tea and prevent and treat various pests.

Adopt the invention of present technique scheme, its beneficial effect is:

The present invention has researched and developed the new efficiently compound pesticide preparation of low toxicity, under the situation that does not increase dose, improve drug effect, delay pest resistance to insecticide generation, the influence of people, environment and crop is reduced.These article particularly have very high preventive effect for the aleyrodid on paddy rice, vegetables, the melon and fruit, plant hopper, leafhopper, snout moth's larva etc.

Pesticidal combination of the present invention compared with prior art produces following beneficial effect: ⑴ and compares with single agent, and said composition has notable synergistic to insect, has obviously improved control efficiency; ⑵ the many usefulness of one medicine, a dispenser can be prevented insect in Zhiduo County simultaneously, reduces control recruitment cost; ⑶ can replace high-toxic pesticide, and reduce environmental pollution and residue of pesticide significantly; ⑷ have concurrently quick-acting and long-acting; ⑸ and Acarus tritici urea with the Nitenpyram list agent compare, produce and the use cost reduction; ⑹ suppress the generation of insect to the resistance of agricultural chemicals.

Embodiment

Embodiment 1:

Take by weighing Acarus tritici urea 5%, Nitenpyram 10%, organosilicon 3%, OP-10 8%, agricultural newborn 200#6%, the xylol surplus supplies 100%, with the method for above raw material according to routine preparation missible oil, drops into mixing kettle and mixes.

Process 5% Acarus tritici urea, 10% Nitenpyram missible oil.

Embodiment 2:

Take by weighing Acarus tritici urea 10%, Nitenpyram 5%, organosilicon 8%, soil temperature 20 5%, 603# 6%, propane diols 2%, water surplus supplies 100%, with the method for above raw material according to routine preparation aqua, drops into the high shear mixing still and mixes.

Process 10% Acarus tritici urea, 5% Nitenpyram aqueous emulsion.

Embodiment 3:

Take by weighing Acarus tritici urea 1%, Nitenpyram 60%, organosilicon 0.5%; NPEP04 10%, styrene phenol formaldehyde resin APEO 3%, white carbon black 10%; The diatomite surplus supplies 100%; With the method for above raw material according to routine preparation wetting powder, drop into mixing kettle and mix, carry out the comminution by gas stream operation then.

Process 1% Acarus tritici urea, 60% Nitenpyram wetting powder.

Embodiment 4:

Take by weighing Acarus tritici urea 25%, Nitenpyram 1%, organosilicon 20%, castor oil polyoxyethylene ether 1%; Styrene phenol formaldehyde resin APEO 15%, white carbon black 10%, glauber salt 2%; Dextrin 1.5%, the potter's clay surplus supplies 100%, with the method for above raw material according to routine preparation water dispersible granules; The input mixing kettle mixes, and carries out the comminution by gas stream operation then, carries out granulation, baking operation at last.

Process 25% Acarus tritici urea, 1% Nitenpyram water dispersible granules.

Embodiment 5:

Take by weighing Acarus tritici urea 15%, Nitenpyram 10%, organosilicon 5%; APES sulfosuccinate disodium 8%, AEO 6%, diatomite 8%; Glauber salt 2%, dextrin 3%, water surplus supplies 100%; With the method for above raw material according to routine preparation suspending agent, drop into mixing kettle and mix, carry out one colloid mill, two road sand milling operations then.

Process 15% Acarus tritici urea, 10% Nitenpyram suspending agent.

Embodiment 6:

Take by weighing Acarus tritici urea 0.5%, Nitenpyram 1%, organosilicon 2%; EO-PO block type surfactant 4%, NPE phosphate 6%, diatomite 5%; Glauber salt 1%, dextrin 2%, water surplus supplies 100%; With the method for above raw material according to routine preparation kind of clothing agent, drop into mixing kettle and mix, carry out one colloid mill, two road sand milling operations then.

Process 0.5% Acarus tritici urea, 1% Nitenpyram kind clothing agent.

Embodiment 7:

Take by weighing Acarus tritici urea 8%, Nitenpyram 12%, organosilicon 5%, toluene 5%; Diphenyl biphenyl aldehyde APEO 5%, APES 6%, propane diols 2%; Water surplus supplies 100%, with the method for above raw material according to routine preparation aqua, drops into the high shear mixing still and mixes.

Process 8% Acarus tritici urea, 12% Nitenpyram microemulsion.

Embodiment 8:

Take by weighing Acarus tritici urea 10%, Nitenpyram 10%, organosilicon 3%, OP-10 8%, cinnamic aldehydes phenol APEO 6%, water surplus supplies 100%, with the method for above raw material according to routine preparation aqua, drops into the shear-mixed still and mixes.

Process 10% Acarus tritici urea, 10% Nitenpyram aqua.

Implementation result 1The mensuration of 5% Acarus tritici urea, 10% acetamiprid pesticide composition co-toxicity coefficient:

At the 5% Acarus tritici urea of indoor measurement embodiment 1,10% acetamiprid pesticide composition co-toxicity coefficient to aleyrodid.Experimental technique is for soaking malicious method; Empirical value adopts probability value analytical method to return; Obtain regression equation promptly cause death in dense LC50; Adopt San Johnson toxicity index method to obtain the co-toxicity coefficient CTC value of Acarus tritici urea, Nitenpyram insecticide mixtures again, CTC >=180 prove that promptly it is synergy that this Pesticidal combination is mixed.Experimental result is seen table 1:

The result shows: Acarus tritici urea, Nitenpyram are mixed and have very high synergistic effect, and co-toxicity coefficient reaches 225.7.

Implementation result 25% Acarus tritici urea, 10% acetamiprid pesticide composition are to the field control effectiveness test of aleyrodid:

Adopt 5% Acarus tritici urea, the 10% Nitenpyram missible oil of the embodiment of the invention 1 to do the test of pesticide effectiveness in the field to aleyrodid; Aleyrodid is in larval phase; Every processing triplicate; Adopt district's group arrangement at random, adopt knapsack sprayer conventional spray (750L/hm2) to investigate the larva quantity of aleyrodid respectively in 1 day, 3 days, 5 days with processing.Calculate control efficiency according to following formula:

Control efficiency (%)=(1-Ta*Cb/Tb*Ca) * 100%

Ta: insect population quantity after the treatment region dispenser

Tb: insect population quantity after the treatment region dispenser

Ca: insect population quantity after the dispenser of check plot

Cb: insect population quantity after the dispenser of check plot

The result shows: being mixed of Acarus tritici urea, Nitenpyram has good preventive effect to aleyrodid, obviously is superior to the preventive effect of single agent.

The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.

Claims (1)

1. the microemulsion of Acarus tritici urea and Nitenpyram is characterized in that: this microemulsion is by weight by Acarus tritici urea 8%, Nitenpyram 12%; Organosilicon 5%, toluene 5%, diphenyl biphenyl aldehyde APEO 5%; APES 6%, propane diols 2%, water surplus supplies 100%; With the method for above raw material, drop into the high shear mixing still and mix according to routine preparation aqua; Process 8% Acarus tritici urea, 12% Nitenpyram microemulsion; Described organosilicon is meant the organic silicon surfactant that contains trisiloxanes or modification trisiloxanes structure.