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Composite insecticidal composition containing dinotefuran and chlopyrifos and purpose thereof

The technology of an insecticidal composition and chlorpyrifos, which is applied in the field of pesticides, can solve problems such as the insecticidal composition that has not yet been found, and achieve the effects of good control effect, delaying drug resistance, and reducing labor for prevention and control.

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

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 chlorpyrifos has been found so far.

Method used

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  • Composite insecticidal composition containing dinotefuran and chlopyrifos and purpose thereof
  • Composite insecticidal composition containing dinotefuran and chlopyrifos and purpose thereof
  • Composite insecticidal composition containing dinotefuran and chlopyrifos and purpose thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Dinotefuran and chlorpyrifos are weighed and prepared in different proportions by conventional preparation methods to prepare dinotefuran·chlorpyrifos emulsifiable concentrate with a main active ingredient of 30% by weight. See Tables 1 and 2 for specific ratios. The control agents were 30% dinotefuran EC and 3% chlorpyrifos EC.

[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 chlorpyrifos compound and single dose resistant rice planthopper

...

Embodiment 2

[0032] Weigh 50g dinotefuran, 5g chlorpyrifos, 3g phenylethylphenol 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·chlorpyrifos water-based emulsions with a main active ingredient of 55% by weight.

Embodiment 3

[0034] Weigh 18g of dinotefuran, 2g of chlorpyrifos, 6g of calcium dodecylbenzenesulfonate, 3g of phenylethylphenol polyoxyethylene ether phosphate, and 33 grams of agricultural milk # (Alkylaryl polyoxypropylene polyoxyethylene ether) 2g, alkylphenol polyoxyethylene ether 1g, cyclohexanone 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 dinotefuran·chlorpyrifos microemulsions 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 40% chlorpyrifos EC (emulsifiable concentrate) and 20% dinotefuran AS (aqueous agent), dilutes according to the dilution multiple in table 3, every mu land sprays after dilution Apply 30 kilograms of liquid medicine, check the results of 2 days, 5 days and 10 days after the medicine, the treatment results are shown in Table 3:

[0036] Table 3: Fie...

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PUM

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Abstract

The invention discloses a composite insecticidal composition containing dinotefuran and chlopyrifos and purpose thereof. The insecticidal composition contains main effective components of dinotefuran and chlopyrifos in a mass ratio of 0.1-80:0.5-80. The insecticidal composition of the invention can be used for controlling homoptera insects on crops, especially for controlling rice hopper and aphid, can generate efficient synergism, overcome and delay resistance of insects, and has fast insecticidal speed, long persistent period, reduced drug usage cost and an effect obvious better than that of a single dose.

Description

technical field [0001] The invention belongs to the field of pesticides, in particular to a compound insecticidal composition containing dinotefuran and chlorpyrifos 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 to mammals. Its acute oral LD50 is 2450mg / kg for male rats and 2275mg / kg for female rats; 2840mg / kg for male mice and 2000mg / kg for female mice. 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 th...

Claims

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Application Information

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IPC IPC(8): A01N57/16A01N51/00A01P7/04
Inventor 齐武陈志忠刘芳沈海峰杨晓声
Owner NANJING HUAZHOU PHARMA
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