CN1061216C

CN1061216C - High-efficiency cypermethrin and shachongdan combined insecticidal preparation

Info

Publication number: CN1061216C
Application number: CN97103843A
Authority: CN
Inventors: 郑斐能; 陈福良; 王仪
Original assignee: Institute of Plant Protection of Chinese Academy of Agricultural Sciences
Current assignee: Institute of Plant Protection of Chinese Academy of Agricultural Sciences
Priority date: 1997-03-31
Filing date: 1997-03-31
Publication date: 2001-01-31
Anticipated expiration: 2017-03-31
Also published as: CN1164327A

Abstract

The present invention relates to a binary insecticidal composition formed by mixing cypermethrin as an effective constituent 1 and thiosultap sodium or dimehypo as an effective constituent 2, wherein the binary insecticidal composition has an obvious synergistic effect on peach aphids when the weight ratio of the effective constituent 1 to the effective constituent 2 is from 1: 10 to 1: 20. the preparation of the binary insecticidal composition can be used for preventing and curing agricultural insects, particularly vegetable leaf miners.

Description

Beta-cypermethrin and desinsection list Pesticidal combination

The present invention relates to beta-cypermethrin (active ingredient I hereinafter referred to as) and desinsection list (active ingredient II hereinafter referred to as) is the binary Pesticidal combination of active ingredient, its preparation, and be used to prevent and treat pest, the wherein method of vegetables liriomyza bryoniae particularly.

Beta-cypermethrin (beta-cypermethrin) as the active ingredient I is to obtain with cypermethrin (cypermethrin) translocation reaction low by cost, that yield is high.Beta-cypermethrin is moderate to a lot of insect drug effect height, anti-medicine risk, the control cost is lower.Beta-cypermethrin is composed with chloro-cyanide pyrethrin insecticide, insecticidal mechanism is all identical, but biologically active doubles.

Desinsection list as the active ingredient II is the exclusive sandworm toxin insecticide of China, has the drug effect height, is difficult for bringing out pest resistance to insecticide, low toxicity, cost are low, advantages such as interior absorption are arranged.

Two kinds of mixing active ingredients proportionings are I: II=1: 5 to 1: 30, be preferably 1: 10 to 1: 20, and for example preferred proportioning is 1: 10,1: 15,1: 20 a composition.

Liriomyza bryoniae (Liriomyza spp.) is a genus of diptera Agromyzidae, the vegetables such as Solanaceae, Curcurbitaceae, pulse family and celery, lettuce of causing harm with the larva leaf mining, the tobacco of Solanaceae, potatoes and other crops, flower plants such as chrysanthemum, China pink.1970's crosses channels such as flowers trade and propagates into Europe, non-, inferior many countries with the cause Americanologist, become worldwide important pests.

Identify Americal rice leaf miner (L.sativae) at the beginning of China 1994 and imported Sanya, Hainan Province into, 1994, nineteen ninety-five repeatedly organizes national survey, collection and evaluation sample proof Americal rice leaf miner, liriomyza trifolii (L.trifolii) to import the many provinces and regions of China into, leans on winter survival in greenhouse in the north.Ground such as Yunnan Province also have south american leaf miner (L.huidobrensis) to take place.Ground such as Yunnan, Fujian, Shandong, Beijing, the production of causing harm to local vegetables, tobacco, flowers of liriomyza bryoniae has constituted serious threat.The inventor selects combination of active principles prescription conduct control medicament targetedly from liriomyza bryoniae biology, ecological characteristics.

With the cypermethrin is that (ZAST BILJA 32 (4), 435-442) for the existing report of active ingredient control vegetables liriomyza bryoniae.But do not see that relevant beta-cypermethrin and desinsection list are the report of the composition of active ingredient, more do not prevent and treat the report of vegetables liriomyza bryoniae with said composition.

Active ingredient I and II are made into binary mixture control vegetables liriomyza bryoniae, and match, delay aspect such as pesticide resistance at drug effect, cost, different insecticidal mechanism all meaningful.

The mixture that active ingredient I and II are formed generally uses with preparation.Said composition can be processed into formulations such as microemulsion, suspending agent, wetting powder, and preferred formulation is a microemulsion.The method for optimizing of using said composition is a foliage-spray, and formulation rate is 40-240g a.i./ha usually.

Preparation prepares in a known manner, normally active ingredient is fully mixed with surfactant, solvent or solid carrier or grinds.

Pesticidal combination generally includes active ingredient I and the II of 10-50%, 5-30% surfactant, 20-85% solid or liquid adjuvants.

The target crop that is fit to is oil crop such as soybean, rape particularly, vegetable crops such as tomato, eggplant, capsicum, lettuce, celery, wild cabbage, Kidney bean, broad bean, cowpea, pea, ground family crops such as cucumber, pumpkin, watermelon, solanaceous crops such as tobacco, potato, flower plant such as chrysanthemum, China pink, fruit tree crops such as citrus, apple, pears.

The insect that is fit to also has scale insect on diamond-back moth, cabbage caterpillar, vegetable aphid, tomato moth, pea leafminer, melon trypetid, citrus leaf-miner, apple apple leaf miner, the fruit tree, soybean pod borer, soybean leaf roll snout moth's larva, phytomyza atriconis or the like except that the vegetables liriomyza bryoniae.

The surfactant that is fit to is 0203B, 2201,0201B, 0204C, OP series, No. 500, neopelex, draws back nonionic and anion surfactant that powder, NNO, spent pulping liquor etc. have good emulsifying, dispersion and wettability.

The solid carrier that is suitable for wetting powder is diatomite, bentonite, attapulgite, kaolin, imvite, potter's clay, white carbon etc.

The present invention describes with the following example, but does not limit the present invention.Wherein active ingredient is represented the composition be made up of beta-cypermethrin I, desinsection list II.

Example of formulations one: microemulsion

Active ingredient (I: II=1: 10) 16%

OP-3 5％

OP-21 1％

Water to 100%

Above-mentioned each composition is evenly mixed, can be made into microemulsion.Can be diluted to the clear liquid of any concentration to water.

Example of formulations two: wetting powder

Active ingredient (I: II=1: 15) 16%

Neopelex 5%

NNO 4％

Kaolin 75%

Active ingredient is fully mixed with adjuvant, and this mixture is fully ground in the mill that is fit to, can be made into wetting powder.Can be diluted to the suspension of any desired concn to water.

Example of formulations three: suspending agent

Active ingredient (I: II=1: 10) 22%

Polyvinyl alcohol 10%

NMO 2％

OP-10 5％

Water 61%

Active ingredient is fully mixed with adjuvant, in agitator, fully grind, can be made into suspending agent with the 3-5mm bead.Can be diluted to the suspension of any desired concn to water.

Biologic test embodiment: Pesticidal combination Toxicity Determination.

Assay method adopts leaf dipping method, and each handles about 50 of aphids, about 20 of Americal rice leaf miners, and 3 repetitions, aphid was soaked 10 seconds, and Americal rice leaf miner soaked 5 seconds, aphid 24h check result, 5 days check results of Americal rice leaf miner.Calculate LD ₅₀, press the abundant method of Sun Yun and calculate co-toxicity coefficient.

Toxicity Determination sees Table 1, table 2.

Table 1 reagent agent is to the toxicity test of black peach aphid on the vegetables

Reagent agent	The toxicity regression formula	LC ₅₀(mg/L)	Correlation coefficient (r)	Co-toxicity coefficient
Reagent agent	The toxicity regression formula	LC ₅₀(mg/L)	Correlation coefficient (r)	Co-toxicity coefficient	Beta-cypermethrin	Y=3.96+1.51x	4.876	0.9819
The desinsection list	Y=-0.01+2.15x	215.057	0.9695		Beta-cypermethrin	Y=3.96+1.51x	4.876	0.9819
The desinsection list	Y=-0.01+2.15x	215.057	0.9695		1: 10 Cyano chrysanthemate of efficient chlorine+1: 15 desinsection list 1: 20	Y=3.38+1.33x	16.407	0.9615	266.3
Y=3.22+1.15x	34.893	0.9948	171.9			Y=3.38+1.33x	16.407	0.9615	266.3
Y=3.22+1.15x	34.893	0.9948	171.9	Y=1.48+2.07x		50.643	0.9896	134.6

As seen from Table 1, three kinds of proportioning co-toxicity coefficients of beta-cypermethrin and desinsection list all have synergistic effect all greater than 100, but 1: 10 proportioning co-toxicity coefficient was significantly higher than 1: 15 and 1: 20 two kinds of proportioning.

Table 2 reagent agent is to the toxicity test of vegetables liriomyza bryoniae

Reagent agent	The toxicity regression formula	LC ₅₀(mg/L)	Correlation coefficient (r)	Co-toxicity coefficient
Reagent agent	The toxicity regression formula	LC ₅₀(mg/L)	Correlation coefficient (r)	Co-toxicity coefficient	Beta-cypermethrin	Y=-0.05+3.25X	35.887	0.9205
The desinsection list	Y=-4.71+4.22X	199.560	0.9469		Beta-cypermethrin	Y=-0.05+3.25X	35.887	0.9205
The desinsection list	Y=-4.71+4.22X	199.560	0.9469		1: 10 composition	Y=1.72+1.63X	103.775	0.9937	149.4

As seen from Table 2,1: 10 Pesticidal combination has than obvious synergistic effect Americal rice leaf miner on the vegetables.

Claims

1. Pesticidal combination, it contains beta-cypermethrin (active ingredient I) and desinsection list (active ingredient II), and I: the weight ratio of II is 1: 5 to 1: 30.

2. according to the Pesticidal combination of claim 1, I wherein: the weight ratio of II is 1: 10 to 1: 20.

3. the method for a pest control wherein will spray with 40-240ga.i./ha according to the Pesticidal combination of claim 1 and prevent and treat pest on crop.

4. according to the method for claim 3, insect wherein is a vegetable-crop pest-insect.

5. according to the method for claim 3, insect wherein is the vegetables liriomyza bryoniaes.