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Compound insecticidal composition containing dinotefuran and fenobucarb and application thereof

The technology of an insecticidal composition and dinotefuran, which is applied in the field of pesticides, can solve the problems of the decline of pest control, and the insecticidal composition of dinotefuran and secbutin has not been found, achieves fast insecticidal speed, and overcomes the resistance of insects to pesticides. , the effect of expanding the control spectrum

Active 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, rice planthoppers and aphids have gradually increased their resistance under the current long-term use of pesticides, and the effect of single-dose pesticides on pest control has gradually declined.
The inventor found through research that the synergistic compounding of pesticides is an effective measure to expand the control spectrum and improve the control effect. So far, no insecticidal composition related to dinotefuran and secbucarb has been found.

Method used

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  • Compound insecticidal composition containing dinotefuran and fenobucarb and application thereof
  • Compound insecticidal composition containing dinotefuran and fenobucarb and application thereof
  • Compound insecticidal composition containing dinotefuran and fenobucarb and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Dinotefuran and Zhongbucarb were weighed and prepared in different proportions according to conventional preparation methods to prepare dinotefuran-Zhongbucarb 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 Zhongbucarb compound and single dose resistant rice planthopper

[0024]

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

Embodiment 2

[0030] Embodiment 2: Weigh 5g dinotefuran, 50g secbutacarb, 3g phenethylphenol polyoxyethylene ether phosphate, Nongru 33 # (Alkylaryl polyoxypropylene polyoxyethylene ether) 2g, alkylphenol polyoxyethylene ether 1g, vegetable oil 13g, add water to 100g. Put the above raw materials into a mixing tank according to the conventional method for preparing water emulsion, and mix at high speed to form a water emulsion with a main active ingredient weight percentage of 55%.

Embodiment 3

[0031] Example 3: Weigh 2g dinotefuran, 18g secbutacarb, 6g calcium dodecylbenzenesulfonate, 3g phenethylphenol polyoxyethylene ether phosphate, and Nongru 33 # (Alkylaryl polyoxypropylene polyoxyethylene ether) 2g, alkylphenol polyoxyethylene ether 1g, isopropanol 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 microemulsion whose main active ingredient is 20% by weight of dinotefuran·zhongbucarb.

[0032] Example 3 is carried out to prevent and control rice brown planthopper drug effect test, contrast medicament is 20% Zhongbuwei EC (emulsifiable concentrate) and 20% dinotefuran EW (water emulsion), dilute according to the dilution multiple in table 3, press 30Kg after dilution The amount of medication per mu, check 3 days after the medicine, the result of 7 days, the processing results are shown in Table 3:

[0033] Table 3: Field test results of dinotefuran-Zob...

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Abstract

The invention discloses a compound insecticidal composition containing dinotefuran and fenobucarb and application thereof, and the insecticidal composition takes the dinotefuran and the fenobucarb as main active ingredients, wherein the weight ratio of the dinotefuran to the fenobucarb is (0.1-80):(0.5-80). The insecticidal composition can generate the higher synergy, overcome and stay the drug resistance of pests, realize long desinsection speed and long lasting period and reduce the medicament cost; and the control effect of the insecticidal composition is obviously higher than a single agent. The compound insecticidal composition can be used for controlling homoptera pests, in particular to rice plant hoppers and aphids on crops, and the effects of the compound insecticidal composition are obviously higher than the 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 secbucarb 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 -6 pa (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 dinotefura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N51/00A01N47/22A01P7/04
Inventor 王红明谷顺明唐旺全杨瑞成张春华
Owner NANJING HUAZHOU PHARMA
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