CN1316888C - Triflumuron mixed pesticide - Google Patents

Abstract

The present invention discloses a composite triflumuron pesticide and belongs to the technical field of composite pesticides. The composite triflumuron pesticide is characterized in that 0.3 to 10% of triflumuron and 20 to 70% of dichlorvos are contained, or the composite triflumuron pesticide is characterized in that 0.3 to 10% of triflumuron, and 0.5 to 5.0% of high-efficiency cypermethrin are contained. The cotoxicity coefficient of the composite triflumuron pesticide reaches 104 to 223, and the present invention has the advantages of favorable effect of preventing lepidoptera injurious insects with the prevention rate of 98.0%, high efficiency, favorable lasting performance and low using cost which is only 1/3 to 1/2 that of similar products.

Description

Triflumuron compound pesticide

Technical field

The invention belongs to the technical field of compound pesticides.

Background technique

Insect growth regulators have been developed and produced for many countries in the world, and have become the fourth generation of pesticide varieties (such as difenoxuron, chlorfluron, hexaflumuron, tebufenozide, triflufluron, buprofezin, etc.), all of which belong to Acylurea insecticides have contact and stomach poisoning effects on insects and mites. This type of pesticide is a chitinase inhibitor, which inhibits the formation of chitin, hinders the normal molt of pests, and causes them to become deformed and die. It has high activity against pests, but the action speed is slow. The larvae will not die soon after contacting the medicine, but the food intake is obviously reduced and they die gradually. The pesticide has high activity against various Lepidoptera, Orthoptera, Coleoptera, Hymenoptera, Diptera and other pests, and is a relatively broad-spectrum insecticide. It has a good control effect on pests that are resistant to insecticides such as organophosphates, carbamates, and pyrethroids. It is relatively safe to natural enemies, bees, fish, etc., but poisonous to silkworms. It is an ideal insecticide in the current integrated pest control, especially in the production of pollution-free agricultural products.

In view of the poor quick-acting properties of this kind of pesticides, the current price is relatively high. If they are compounded with some medium and low-toxic organophosphorus and pyrethroid pesticides that replace highly toxic pesticides in my country, the quick-acting properties will be increased and the cost of pesticides will be reduced.

Contents of invention

Based on the above problems, the object of the present invention is to provide a technical solution of a compound pesticide of slumuron with a wide insecticidal spectrum, low cost, good effect in controlling lepidopteran pests, and good quick-acting and long-lasting effects.

The compound pesticide of triflumuron is characterized in that it contains 0.3-10% of triflumuron and 20-70% of dichlorvos.

The compound pesticide of triflumuron is characterized in that: the content of triflumuron is 0.5-5%, and the content of dichlorvos is 30-50%.

The compound pesticide of thiflumuron is characterized in that the content of thiflumuron is 1-2%, and the content of dichlorvos is 40-50%.

The compound pesticide of triflumuron is characterized in that it contains 0.3-10% of triflumuron and 0.5-5.0% of beta-cypermethrin.

The compound pesticide of triflumuron is characterized in that: the content of flufluzuron is 0.5-5%, and the content of beta-cypermethrin is 1.5-5.0%.

The compound pesticide of triflumuron is characterized in that: the content of flufluzuron is 1-2%, and the content of beta-cypermethrin is 2.0-4.0%.

The chemical name of slumuron is 2-chloro-N[[[4-(trifluoromethyl chloro)phenyl]amino]carbonyl]benzamide; 1-2(2-chlorobenzoyl)-3-( 4 trifluoromethoxyphenyl) urea; it is a known substance, which can be purchased by Jilin Tonghua Pesticide Chemical Co., Ltd.

The chemical name of dichlorvos is 0,0,-dimethyl-0-(2.2.-dichloro)vinyl phosphate; it is a known substance and can be purchased from the former Shanghai Pesticide Factory.

The chemical names of lambda-cypermethrin are (IR cis)S and (IS cis)R-αcyano-(3-phenoxybenzyl)-3-(2,2-dichlorovinyl)-2,2- Dimethylcyclopropane carboxylate; as a known substance, beta-cypermethrin EC can be purchased from the former Hangzhou Pesticide Factory.

The compound pesticide of slumuron can be made into emulsifiable concentrate, which can be prepared by adding organic solvent and emulsifier to the original drug. The specific compounding production process and commonly used additives belong to the existing known technology, and will not be repeated here. Certainly, according to the known technology, according to the technical proposal, it can also be made into a colloidal suspension, that is, the original drug, an organic solvent or water, plus a series of auxiliary agents, and then ground by a sand mill.

The compound pesticide of slumuron has a co-toxicity coefficient of 104-223, is effective in preventing and controlling lepidopteran pests, and has a control rate of 98.0%, good quick-acting and long-lasting effects, and low use cost. About 1/3-1/2 of that.

The ratios in this patent application are all the weight percentages of the pure substances of active ingredients.

Detailed ways

The examples described below illustrate the invention in detail. In these examples, all percentages are by weight unless otherwise indicated.

Formula 1: triflumuron: 0.5%, dichlorvos: 49.5%.

Formula 2: triflumuron: 1.0%, dichlorvos: 49.0%.

Formula 3: triflumuron: 1.5%, dichlorvos: 48.5%.

Formula 4: triflumuron: 2.0%, dichlorvos: 48.0%.

Formula five: triflumuron: 2.5%, dichlorvos: 47.5%.

Formula six: triflumuron: 0.5%, beta-cypermethrin: 3.5%.

Formula 7: triflumuron: 1.0%, beta-cypermethrin: 3.0%.

Recipe 8: triflumuron: 1.5%, beta-cypermethrin: 2.5%.

Formula 9: triflumuron: 2.0%, beta-cypermethrin: 2.0%.

Formula 10: triflumuron: 2.5%, beta-cypermethrin: 1.5%.

The compound pesticides of the above formula, 10% triflumuron EC, 80% dichlorvos EC, and 4.5% beta-cypermethrin EC were tested against Spodoptera litura, and the co-toxicity coefficient and efficacy test data are as follows:

Determination result table of co-toxicity coefficient of 50% triflumuron·dichlorvos EC to Spodoptera litura potion LC50mg/ml Toxicity regression line 95% confidence interval co-toxicity coefficient 10% dichlorvos EC 10% 80% dichlorvos EC 50% DE.DE EC (Formulation 1) 50% DE.DE EC (Formula 2) 50% DE.DE EC 0.04620.16890.11980.10970.1424 Y＝6.7913+1.3414XY＝7.3624+3.0591XY＝6.7965+1.9495XY＝6.8623+1.9402XY＝7.5054+2.9593X 0.0229~0.09320.1338~0.21340.0764~0.18800.0682~0.17640.1076~0.1883 137146110 (Formula 3) 50% kill. DE EC (Formula 4) 50% kill. DE EC (Formula 5) 0.15750.1387 Y=7.4865+3.0977XY=7.4510+2.8564X 0.1237~0.20050.1047~0.1837 107108

Determination results table of co-toxicity coefficient of 4% triflumuron·beta-cypermethrin EC to Spodoptera litura potion LD50mg/ml Toxicity regression line 95% confidence interval co-toxicity coefficient 10% thalluron EC 4.5% beta-cypermethrin EC 4% kill. High EC (formula six) 4% kill. High EC (formula seven) 4% kill. High EC (formula eight) 4% kill. High EC (formula nine) ) 4% kill. High emulsifiable oil (recipe ten) 0.04620.01160.00760.01370.01140.00870.0098 Y=6.7913+1.3414XY=8.4787+1.7965XY=10.0622+2.3916XY=9.1173+2.2094XY=8.0654+1.5761XY=7.4717+1.3314XY=8.1752+1.5815X 0.0229~0.09320.0077~0.01750.0764~0.18800.0103~0.01820.0074~0.01750.0046~0.01640.0061~0.0159 168104141213223

Efficacy test of 10% slumuron emulsifiable oil against Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.2 13 10 76.9 76.9 0.1 14 10 71.4 71.4 0.067 16 10 62.5 62.5 0.05 14 8 57.1 57.1 0.04 16 6 37.5 37.5

Records of Drug Efficacy Test of 80% Dichlorvos EC on Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.4 20 17 85 85 0.27 20 15 75 75 0.2 20 13 65 65 0.16 20 10 50 50 0.13 20 6 30 30

Records of the efficacy test of 4.5% beta-cypermethrin EC against Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.045 20 17 85 85 0.0225 20 14 70 70 0.015 20 12 60 60 0.01125 20 10 50 50 0.009 20 8 40 40

50% DEEP (Formula 1) Efficacy Test Records on Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.5 17 15 88.24 88.24 0.25 15 11 73.33 73.33 0.167 19 12 63.16 63.16 0.125 17 9 52.94 52.94 0.1 17 7 41.17 41.17

50% DEEP (Formula 2) Efficacy Test Records on Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.5 20 18 90 90 0.25 17 13 76.47 76.47 0.167 18 11 61.11 61.11 0.125 18 10 55.56 55.56 0.1 19 9 47.37 47.37

50% DEEP (Formula 3) Efficacy Test Records on Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.5 20 19 95 95 0.25 17 13 76.47 76.47 0.167 15 8 53.37 53.37 0.125 13 6 46.15 46.15 0.1 15 5 30 30

50% DEEP (Formula 4) Efficacy Test Records on Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.5 18 17 94.44 94.44 0.25 17 12 70.59 70.59 0.167 17 9 52.94 52.94 0.125 15 6 40 40 0.1 15 4 26.67 26.67

50% DEEP (Formula 5) Efficacy Test Records on Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.5 20 19 95 95 0.25 20 15 75 75 0.167 18 10 55.55 55.55 0.125 17 8 47.06 47.06 0.1 14 5 35.71 35.71

4% killing high emulsifiable oil (formulation six) to the test record of the efficacy of Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.04 20 19 95 95 0.02 20 17 85 85 0.013 19 14 73.68 73.68 0.01 19 13 68.42 68.42 0.008 19 8 42.11 42.11

4% kill·high EC (formula 7) efficacy test record on Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.04 20 17 85 85 0.02 20 13 65 65 0.013 20 9 45 45 0.01 18 7 38.89 38.89 0.008 16 5 31.25 31.25

4% killing high EC (formula 8) to the test record of the efficacy of Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.04 20 16 80 80 0.02 20 13 65 65 0.013 20 11 55 55 0.01 16 8 50 50 0.008 19 7 36.84 36.84

4% kill high EC (formula 9) on the test records of the efficacy of Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.04 20 16 80 80 0.02 20 14 70 70 0.013 20 12 60 60 0.01 20 11 55 55 0.008 20 9 45 45

4% kill high EC (formula 10) on the efficacy test record of Spodoptera litura Dose (mg/ml) Number of test insects Number of dead insects mortality rate(%) Adjusted mortality rate (%) 0.04 20 16 80 80 0.02 20 15 75 75 0.013 20 12 60 60 0.01 20 10 50 50 0.008 20 8 40 40

50% triflumuron·dichlorvos EC (formula two), 4% triflumezuron·beta-cypermethrin EC (formula six), 10% triflumezuron·dichlorvos EC, 80% dichlorvos EC, 4.5% beta-cypermethrin EC on the field of Spodoptera litura The efficacy test data are as follows:

Table of the effect of the compound agent of triflumuron, dichlorvos and beta-cypermethrin on controlling Spodoptera litura potion Use concentration (times) The number of pre-drug worms (head) 3 days after the medicine 7 days after medicine Insect number (head) Reduction rate (%) School levy rate (%) Insect number (head) Reduction rate (%) School levy rate (%) 50% dichlorvos emulsifiable concentrate (Formula 2) 1000 3225 Subtotal 57 011 98.2 97.6 011 98.2 96.8 2000 3234 Subtotal 66 448 87.9 83.7 224 93.9 89.0 4% triflumuron·beta-cypermethrin emulsifiable concentrate (formula 6) 1000 3134 Subtotal 65 011 98.5 98.0 011 98.5 97.3 2000 3834 Subtotal 72 347 90.3 87.0 123 95.8 92.4 10% triflumuron emulsifiable oil 1000 3023 Subtotal 53 9817 67.9 57.0 112 96.2 93.2 80% Dichlorvos EC 500 3233 Subtotal 65 5611 83.1 77.3 5510 84.6 72.3 4.5% Beta-Cypermethrin EC 500 4032 Subtotal 72 5712 83.3 77.6 459 87.5 77.5 Clear water control 3825 Subtotal 63 281947 25.4 201535 44.4

Using the feed dipping method, the test results on the 3rd instar larvae of Spodoptera litura showed that the co-toxicity coefficients of the formulations of different ratios of triflulumuron and dichlorvos were all greater than 100, and both had obvious synergistic effects. Among them, 50% trifluzuron·dichlorvos EC (Formulation 2) had the highest co-toxicity coefficient, reaching 146. Considering the cost and efficacy of pesticides, 50% Triflufluron·Dichlorvos EC (Formulation 2) could be selected as an optimal solution.

Using the feed dipping method, the test results on the third instar larvae of Spodoptera litura showed that the co-toxicity coefficients of different ratios of triflulumuron and beta-cypermethrin were all greater than 100, and both had obvious synergistic effects. Wherein with 4% triflumuron · beta-cypermethrin emulsifiable concentrate (prescription ten) co-toxicity coefficient is maximum, reaches 223, but its triflufluron content is the highest, and cost is bigger; The toxicity coefficient is 168, but the content of trifluzuron is low, and the persistence period is short; considering the cost of pesticides, drug efficacy, and persistence, 4% flufluzuron·beta-cypermethrin emulsifiable concentrate (formula 9) can be selected as an optimal solution .

Find out from above-mentioned data: 1000 times of liquids of 50% triflumuron·dichlorvos compound agent (being 50ml per mu), the control effect reaches 97.6% in 3 days after medication; The control effect in 7 days is 96.8%; 2000 times of liquid (25ml of dosage per mu), the control effect in 3 days was 83.7%, and the control effect in 7 days was 89%. The quick-acting and sustained-acting properties of the 1000-fold solution were better than those of the two contrasting agents.

The control effect of 1000 times liquid of 4% flufluzuron·beta-cypermethrin is 98% after 3 days and 97.3% after 7 days; the control effect of 2000 times liquid is 87% after 3 days and 92.4% after 7 days ; All are better than the control effect of two kinds of control agents.

The above-mentioned pesticides did not cause phytotoxicity to the experimental crops.

Calculated from the production cost, the pesticide cost per ton of 50% triflumuron·dichlorvos compound is 21,000 yuan, and the ex-factory price (including packaging fee) is about 33,000 yuan. Using 50ml per mu, the pesticide cost per mu is about 1.8-2.0 yuan. It is half lower than the 50ml per mu (about 4.0 yuan) of 10% triflumuron emulsifiable concentrate used alone.

The cost price and ex-factory price of 4% flufluzuron·beta-cypermethrin compound are similar to the above.

Claims (3)

1. The compound pesticide of triflumuron is characterized in that: it contains 0.3-2.5% of triflumuron and 40-50% of dichlorvos. 2. The compound pesticide of triflumuron as claimed in claim 1, characterized in that: the content of triflumuron is 0.3-2.5%, and the content of dichlorvos is 47.5-50%. 3. The compound pesticide of triflumuron as claimed in claim 1, characterized in that: the content of triflufluron is 0.5-2.5%, and the content of dichlorvos is 47.5-50%.