CN110999912A

CN110999912A - Insecticidal composition containing bromofenoxaprop-p-fluorobenzene bisamide and chlorantraniliprole

Info

Publication number: CN110999912A
Application number: CN201911343211.4A
Authority: CN
Inventors: 汪云强; 朱怀铜; 梅洪玲; 吴文静; 黄永灿; 夏葵
Original assignee: Anhui Huilong Group Yinshan Pharmaceutical Co ltd
Current assignee: Anhui Huilong Group Yinshan Pharmaceutical Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-04-14

Abstract

The invention provides an insecticidal composition containing brotrochar diamide and chlorantraniliprole, wherein the weight ratio of the brotrochar diamide to the chlorantraniliprole is 1:20-20: 1. The composition has obvious synergistic effect, can reduce the use amount of medicaments, reduce the cost, reduce the harm to the environment and is beneficial to delaying the generation of the drug resistance of the insect pests of the plutella xylostella.

Description

Insecticidal composition containing bromofenoxaprop-p-fluorobenzene bisamide and chlorantraniliprole

Technical Field

The invention belongs to the field of agricultural chemistry, and particularly relates to an insecticidal composition containing bromofenoxynil fluorobenzene bisamide and chlorantraniliprole.

Background

Plutella xylostella (L.) is one of the main pests of cruciferous crops, is distributed all over the country, and is serious in vegetable production areas. The existing control of the plutella xylostella still depends on chemical pesticides, and the plutella xylostella is easy to generate resistance to the pesticides due to frequent application of the chemical pesticides and the characteristics of short generation and rapid propagation of the plutella xylostella. According to the report, the diamondback moth in China has resistance to more than 90% of medicaments, the prevention and control situation is severe, and the resistance problem becomes an important obstacle for restricting the development of the cruciferous vegetable industry in China.

The development area of the drug resistance is gradually enlarged from point to surface, and the development level of the drug resistance is from low to high. Relevant studies have shown that resistance to diamondback moth is not stable from low to very high levels of resistance, but tends to stabilize after very high levels of resistance are reached. Therefore, when the drug resistance occurrence area is small and the drug resistance level is relatively low, a scientific and reasonable medication strategy is made in time, the selection pressure of the drug is reduced, and the method is particularly important for prolonging the service life of the drug and delaying the generation of the drug resistance.

The diamondback moth is one of the most serious pests with drug resistance in the world, has strong environment adaptability and resistance generation capability, and is difficult to thoroughly solve the problem of drug resistance only by using a new target pesticide to treat the resistant diamondback moth. Avoiding long-term use of a single agent, reducing the dosage of the single agent is an effective means for controlling the resistance problem of the diamondback moth, and is beneficial to delaying the generation of drug resistance.

Chlorantraniliprole is the first broad-spectrum pesticide with a novel o-acylaminobenzamide chemical structure, can effectively control almost all important lepidoptera pests and partial other pests, and is very safe to crops. The brofenpyrad fluorobenzene bisamide is a novel bisamide insecticide jointly developed by Mitsui agricultural chemical company and Pasteur in Japan, and is mainly used for controlling lepidoptera and coleoptera pests of leafy vegetables, cereals and other perennial crops, and sanitary pests such as termites, mosquitoes, flies and the like. In the prior art, no related report that the pesticide is compounded to delay the pesticide resistance of pests is provided.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides the following technical scheme:

the insecticidal composition containing the brofenpyrad and the chlorantraniliprole is characterized in that active ingredients comprise the brofenpyrad and the chlorantraniliprole, and the weight ratio of the brofenpyrad to the chlorantraniliprole is 1:20-20: 1.

The insecticidal composition is characterized in that the weight ratio of the brotrochan fluorobenzene diamide to the chlorantraniliprole is 1:10-20: 1.

The insecticidal composition is characterized by further comprising agriculturally acceptable auxiliaries, wherein the weight percentage of the active ingredients is 1-70%.

The insecticidal composition is characterized in that the auxiliary agent comprises a dispersing agent, an emulsifying agent, a disintegrating agent, a stabilizing agent, a wetting agent, a synergist, a penetrating agent, a defoaming agent, a thickening agent, a solvent or a filler and the like.

The insecticidal composition is characterized in that: the dosage form which can be prepared by the composition is wettable powder, water dispersible granules and suspending agent.

The invention also relates to the use of the insecticidal composition according to the invention for controlling crop pests. Control of diamondback moth is preferred.

Compared with the prior art, the invention has the following beneficial effects:

the composition has excellent control effect on diamondback moth, has obvious synergistic effect after mixing, improves the control effect, and is beneficial to overcoming and delaying the generation of drug resistance of pests.

The composition of the invention is mixed with pesticide to reduce the dosage, thereby reducing the cost and lightening the pollution to the environment, having good safety and meeting the safety requirement of pesticide preparations.

Detailed Description

The following detailed description of specific embodiments of the present invention is provided in conjunction with examples, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

Indoor bioassay: indoor insecticidal toxicity determination method of diamondback moth by using brotrochan fluorobenzene diamide and chlorantraniliprole

The test object is plutella xylostella, and cabbage leaves are artificially bred for multiple generations indoors without contacting any medicament; and selecting 3-instar larvae.

The test method comprises the following steps: test agents were formulated in 5 series of concentrations on a pre-test basis. Beating the clean cabbage leaves into round pieces with the diameter of 2cm by using a puncher, immersing the leaves into corresponding medicaments, treating for 10s, taking out and airing. The leaves with the drug are placed in a 12-well plate and then 3-instar larvae of the same size are inoculated. Each treatment was repeated 4 times with 10 replicates. And (4) checking the death condition after 48h, judging the death condition by no reaction when the brush is slightly touched on the body surface of the larva, recording the death number and survival number, and calculating and correcting the death rate. Performing data analysis by adopting a sps software; the co-toxicity coefficient (CTC) of the drug was then calculated according to the Sun cloud Peel method. When the CTC is less than or equal to 80, the composition shows antagonism, when the CTC is more than 80 and less than 120, the composition shows additive action, and when the CTC is more than or equal to 120, the composition shows synergistic action.

TABLE 1 indoor insecticidal virulence determination of Imidacloprid flubendiamide and chlorantraniliprole against plutella xylostella

As shown in Table 1, compared with a single agent, the weight ratio of the brotrochan fluorobenzene diamide to the chlorantraniliprole in the insecticidal composition is in a range of 1:10-20:1, the composition has excellent insecticidal activity on cabbage diamondback moths, and the composition has a remarkable synergistic effect.

And (3) field pesticide effect determination:field control effect determination of diamondback moth by using brofenthiuron bisamide and chlorantraniliprole

Test subjects: cabbage diamondback moth

The test method comprises the following steps: the experiment set 2 medicament treatment, using clear water as a control, repeating the treatment for 3 times, wherein the area of each cell is 20m2, and applying the medicament in a stem leaf spraying mode and uniformly spraying. Applying the pesticide for 1 time in the peak period of 3 instars of the plutella xylostella larvae, adopting a fixed-point plant investigation method, investigating 5 points in each cell, investigating 2 plants in each point, investigating the population base numbers of each cell 1d before pesticide application and 7d after pesticide application, respectively, calculating the correction control effect, and observing the safety of the test reagent pair.

Test agents:

medicament 1: 42% brofenuron-benzene bisamide-chlorantraniliprole water dispersible granule

(the composition is 7 percent of brotrochan fluorobenzene diamide, 35 percent of chlorantraniliprole, 4 percent of nekal, 5 percent of NNO, 4 percent of sodium dodecyl benzene sulfonate, 3 percent of ammonium sulfate, 2 percent of soluble starch and the balance of kaolin accounting for 100 percent)

Medicament 2: 50% brofenuron-fluorobenzene bisamide-chlorantraniliprole water dispersible granule

(the composition is 25 percent of brofenbendiamide, 25 percent of chlorantraniliprole, 5 percent of nekal, 7 percent of NNO, 6 percent of sodium dodecyl benzene sulfonate, 4 percent of ammonium sulfate, 3 percent of soluble starch and the balance of kaolin accounting for 100 percent)

TABLE 2 field control of diamondback moth by Bromodin fluorobenzenediamide and Chlorantraniliprole

Treatment of	The dosage of the effective components is g/mu	Prevention effect/%)	Safety feature
				Agent 1	1.5	85.0	Security
Medicament 2	2.0	90.4	Security
				Control	-	-

Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. All percentages in the formulation are by weight. The processing technology of each preparation of the composition is the prior art, and can be changed according to different conditions.

Claims

1. The insecticidal composition containing the brofenpyrad and the chlorantraniliprole is characterized in that active ingredients comprise the brofenpyrad and the chlorantraniliprole, and the weight ratio of the brofenpyrad to the chlorantraniliprole is 1:20-20: 1.

2. The insecticidal composition according to claim 1, wherein the weight ratio of the brobendiamide to the chlorantraniliprole is 1:10-20: 1.

3. An insecticidal composition according to any one of claims 1 to 2 further comprising agriculturally acceptable adjuvants, the active ingredients being present in an amount of from 1 to 70% by weight.

4. The insecticidal composition of claim 3, wherein: the dosage form which can be prepared by the composition is wettable powder, water dispersible granules and suspending agent.

5. Use of the pesticidal composition according to any one of claims 1 to 4 for controlling crop pests.

6. Use according to claim 5, characterized by being used for the control of diamondback moths.