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Tebufenozide quinalphos compounded pesticide

The technology of quetiaphos and tebufenozide is applied in the field of compound pesticides for preventing and controlling the rice leaf roller, can solve the problems of short residual effect period, short lasting effect period, fast degradation speed and the like, and achieves high control, low cost, Long lasting effect

Inactive Publication Date: 2008-05-21
徐炳华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Quetiaphos is an organophosphorus insecticide, which has stomach poisoning and contact killing effects. It is a nerve agent. It has obvious contact killing effects in killing insects and acarids. It has no systemic and fumigation properties, and has good permeability on plants. It has a certain ovicidal effect, and its scope of application is suitable for the control of various pests on rice, cotton, fruit trees, and vegetables. It also has a certain impact on the environment during use

Method used

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  • Tebufenozide quinalphos compounded pesticide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 Preparation of Tebufenozide-Quetiafos Compound Pesticide

[0022] The distribution of each group is shown in Table 1.

[0023] Table 1 Distribution ratio of each group

[0024] components

[0025] making process:

[0026] Calculate the weight according to the ratio in Table 1, add the tebufenozide technical product into the sand milling equipment, add metered water, and then add the dispersant for sand milling for 24 hours, take samples, test the fineness until the particle size reaches 2 to 3 microns, and discharge Add the original drug of Quetiafos to the above-mentioned feed liquid, add emulsifier, thickener, and antifreeze and shear at high speed with a high-shear emulsifier. Hydrazine-quinathion compound pesticide suspoemulsion sample.

[0027] Stability test:

[0028] The above samples were placed in an incubator, stored at 54±2°C for two weeks, then lowered to 0±2°C, stored for one week, and taken out. The test results before storage, afte...

Embodiment 2

[0032] Example 2 Toxicity Determination of Tebufenozide-Quinthion Compound Pesticides on Rice Leaf Roller

[0033] Five different compounding ratios of this compound pesticide were prepared, and the total concentrations of tebufenozide and quinalphos were both 22%. The five compounding ratios are shown in Table 3.

[0034] Table 3 Tebufenozide Quetiafos mixture is formulated into 5 different ratios of 22% concentration

[0035] Drug and ratio (%)

[0036] Toxicity assay:

[0037] In the room, the co-toxicity coefficient of the 5 kinds of compound pesticides with the ratio of tebufenozide and quinalphos in the above table was measured with the 4th to 5th instar larvae of the rice leaf roller as the object, and the measurement results are shown in Table 4.

[0038] Table 4 Toxicity test results of Tebufenozide·Quetion mixture against rice leaf roller

[0039] potion

[0040] The test results in Table 4 show that the co-toxicity coefficients of the 5 differe...

Embodiment 3

[0041] Example 3 Drug efficacy test on rice leaf roller 4-5 instar larvae

[0042] See Table 5 and Table 6 for the records of the efficacy test sheets of Tebufenozide and Quetiafos respectively on 4-5 instar larvae of the rice leaf roller.

[0043] Table 5 Records of the efficacy test of tebufenozide on the 4th-5th instar larvae of the rice leaf roller

[0044] Dose (mg / l)

Number of test insects

Number of dead insects

Mortality (%)

Adjusted mortality rate (%)

20.0000

33

22

66.7

63.2

10.0000

35

23

65.7

62.1

5.0000

35

22

62.9

59.0

2.5000

32

14

43.8

37.9

1.2500

31

7

22.6

14.5

CK

48

4

9.5

[0045] Table 6 Records of efficacy tests of quinthion on 4-5 instar larvae of rice leaf roller

[0046] Dos...

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Abstract

The invention relates to compound pesticide of tebufenozide and quinalphos used for killing cnaphalocrocis medinalis. The invention consists of effective components and accessories, wherein, the effective components are the tebufenozide of 2.0 to 20.0 percent and the quinalphos of 8.0 to 25.0 percent. The compound pesticide overcomes the shortage of a single component in the prior art and has evident complementary and synergy effect, high co-toxicity coefficient, and is characterized by quick effect, broad spectrum and low cost; the compound pesticide can be made into suspoemulsion with water as solvent, which has low effect on ecological environment but high control effect and long lasting effect, thereby being an ideal pesticide for controlling rice pests.

Description

technical field [0001] The invention relates to a compound pesticide for controlling rice leaf rollers, in particular to a tebufenozide-quinathion compound pesticide. technical background [0002] At present, the main agents for the control of rice leaf rollers in China are chlorpyrifos, acephate, phoxim, etc., with large dosage, low control effect and short duration. The dosage form is mainly emulsifiable concentrate. The solvent remains in the soil, which has a great impact on the ecological environment. [0003] In addition, the following two pesticides are known: [0004] 1. Tebufenozide, the molecular formula is C 22 h 28 N 2 o 2 ; Chemical name is N-tert-butyl-N-(4-ethylbenzoyl)-3,5-dimethylbenzohydrazide; English common name is tebufenozide; Molecular weight 352.5; Solubility (20°C): water 0.012mg / L, acetone 460mg / L, benzene 110g / L, xylene 390g / L, ethanol 57g / L, cyclohexane 320g / L, n-octanol 63g / L, n-hexane 10g / L, slightly soluble in organic Solvent, stable at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N57/16A01P7/04A01N33/26
Inventor 徐炳华林国洪
Owner 徐炳华
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