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Composite pesticidal composition containing dinotefuran and imidacloprid and application of composite pesticidal composition

A technology of insecticidal composition and imidacloprid, which is applied in the field of pesticides, can solve the problems that the insecticidal composition of dinotefuran and imidacloprid has not been found, and the decline of pest control effect, so as to overcome the resistance of pests, delay the resistance of pests, and achieve good results. The effect of the control effect

Inactive Publication Date: 2012-04-18
NANJING HUAZHOU PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the resistance of homopteran pests such as rice planthoppers and aphids has gradually increased under the current long-term medication conditions, and the effect of single-dose pesticides on pest control has gradually declined.
The inventor found through research that the synergistic compounding of pesticides can expand the control spectrum and improve the control effect, and no insecticidal composition related to dinotefuran and imidacloprid has been found so far.

Method used

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  • Composite pesticidal composition containing dinotefuran and imidacloprid and application of composite pesticidal composition
  • Composite pesticidal composition containing dinotefuran and imidacloprid and application of composite pesticidal composition
  • Composite pesticidal composition containing dinotefuran and imidacloprid and application of composite pesticidal composition

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Dinotefuran and imidacloprid are weighed and prepared in different proportions by conventional preparation methods to prepare dinotefuran imidacloprid emulsifiable concentrate with a main active ingredient weight percentage of 30%. See Tables 1 and 2 for specific ratios.

[0022] Indoor synergistic bioassay was carried out by rice stem dipping method, the resistant rice planthopper was selected as the target pest, each treatment was repeated 3 times, and 60 heads were treated at each concentration, and the toxicological regression of each pesticide resistant rice planthopper was calculated by the probability value method Equation and lethal concentration LC 50 , with LC 50 The co-toxicity coefficient was calculated according to Sun Yunpei method, and the results are shown in Table 1:

[0023] Table 1 Toxicity determination of dinotefuran and imidacloprid compound and single dose resistant rice planthopper

[0024]

[0025] It can be seen from Table 1 that the comb...

Embodiment 2

[0032] Weigh 5g dinotefuran, 50g imidacloprid, 3g phenethylphenol polyoxyethylene ether phosphate, agricultural milk 33 # (Alkylaryl polyoxypropylene polyoxyethylene ether) 2g, alkylphenol polyoxyethylene ether 1g, xylene 13g, add water to 100g. Put the above raw materials into a mixing tank according to the conventional method for preparing water-based emulsions and mix at high speed to form dinotefuran·imidacloprid water-based emulsions with a main active ingredient weight percentage of 55%.

Embodiment 3

[0034] Weigh 18g dinotefuran, 2g imidacloprid, 6g calcium dodecylbenzenesulfonate, 3g phenethylphenol polyoxyethylene ether phosphate, 33 agricultural milk # (Alkylaryl polyoxypropylene polyoxyethylene ether) 2g, alkylphenol polyoxyethylene ether 1g, propylene glycol 10g, add water to 100g. Put the above raw materials into a mixing tank according to the conventional method for preparing microemulsions, and mix them to form a dinotefuran imidacloprid microemulsion with a main active ingredient of 20% by weight.

[0035] Example 3 is carried out to control rice brown planthopper efficacy test, contrast agent is 20% imidacloprid WP (wettable powder) and 20% dinotefuran AS (aqueous agent), dilute according to the dilution multiple in table 3, per mu after dilution Ground spray 30 kilograms of medicinal liquid, check 3 days after the medicine, the result of 7 days, the processing result is shown in Table 3:

[0036] Table 3: Field test results of dinotefuran-imidacloprid compound ...

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Abstract

The invention discloses a composite pesticidal composition containing dinotefuran and imidacloprid and application of the composite pesticidal composition. The pesticidal composition has main active ingredients of the dinotefuran and the imidacloprid, wherein the weight ratio of the dinotefuran to the imidacloprid is (0.1-80):(0.5-80). The composite pesticidal composition can control homopterous insects of crops, particularly rice planthopper and aphid, has high synergism, high pesticidal speed and long lasting time, overcomes and delays the pesticide resistance of the insects, can obviously reduce pesticide cost, and has the control effect obviously higher than that of a single agent.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a compound insecticidal composition containing dinotefuran and imidacloprid and its application. Background technique [0002] Dinotefuran, chemical name: 1-methyl-2-nitro-3-(tetrahydro-3-furylmethyl)guanidine, white crystal, melting point 107.5°C, industrial product 94.5~101.5°C, vapor pressure <1.7×10-6pa (30°C), density 1.33 (25°C). The solubility is 40g / L in water, hardly soluble in organic solvents such as cyclohexane and mineral spirits. The structural formula is: [0003] [0004] Dinotefuran is very safe for mammals, and its acute oral LD 50 For male rats 2450mg / kg, female rats 2275mg / kg; male mice 2840mg / kg, female mice 2000mg / kg. Acute percutaneous LD50 for rats > 2000mg / kg (female and male). No teratogenicity, carcinogenicity and mutagenicity. Dinotefuran is also very safe to aquatic organisms. Fish toxicity test shows that dinotefuran is more than...

Claims

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Application Information

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IPC IPC(8): A01N51/00A01P7/04
Inventor 王红明陈文明胡明华彭永强邢建生
Owner NANJING HUAZHOU PHARMA