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Composite insecticidal composition containing pymetrozine and propylene glycol alginate and application thereof

A technology of propylene glycol alginate and malonate alginate, which is applied in the field of pesticides, can solve the problems of high market prices, reduce production and use costs, reduce environmental pollution and pesticide residues, and improve control effects

Active Publication Date: 2011-04-20
NANJING HUAZHOU PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its market price is higher

Method used

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  • Composite insecticidal composition containing pymetrozine and propylene glycol alginate and application thereof
  • Composite insecticidal composition containing pymetrozine and propylene glycol alginate and application thereof
  • Composite insecticidal composition containing pymetrozine and propylene glycol alginate and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Pymetrozine and etofenprox were weighed and prepared in different proportions by conventional preparation methods to prepare pymetrozine-etoproxil emulsifiable concentrate with a main active ingredient mass percentage of 30%. See Tables 1 and 2 for specific ratios.

[0018] The toxicity of pymetrozine, propylene glycol alginate and their compound samples to rice brown planthopper was determined by rice stem dipping method. Each treatment was repeated 3 times, and each concentration was treated with 30 heads. 50 Calculate the co-toxicity coefficient according to Sun Yunpei's method:

[0019] Table 1 Toxicity determination and co-toxicity coefficient of the compound insecticidal composition of pymetrozine and propylene glycol alginate to rice brown planthopper

[0020]

[0021] The data in the table shows that pymetrozine and propylene glycol alginate have a synergistic effect on rice brown planthopper after mixing, and the co-toxicity coefficients of the three propor...

Embodiment 2

[0027] Weigh 21g of pymetrozine, 4g of propylene glycol alginate, 10g of wetting agent, 2g of additives, and add fillers to 100g, mix the above materials in an ultrafine pulverizer to form a 25% pymetrozine·methyl toxic wettability powder.

[0028] Adopt the sample of embodiment 2 to carry out the field test of preventing and treating rice brown planthopper in the field, contrast agent is 25% pymetrozine and 40% propylene glycol alginate EC, and concrete consumption is shown in Table 3, and the water consumption per mu is 30kg, after the medicine Check the results of 3 days, 7 days, 14 days, and 28 days. The test results are shown in Table 3:

[0029] Table 3 example 2 sample is to the field test result of rice brown planthopper

[0030]

[0031] It can be seen from Table 3 that Example 2 has excellent quick-acting effect on rice brown planthopper, and has a long-lasting effect period, and performs well in the field. The effect is obviously higher than that of 25% pymetroz...

Embodiment 3

[0038] Weigh 30g of pymetrozine, 2g of propylene glycol alginate, 10g of lignin, 2g of naphthalene sulfonate, add diatomaceous earth to 100g, mix the above raw materials in an ultrafine pulverizer to form 32% pymetrozine·methanol Base poison wettable powder.

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Abstract

The invention discloses a composite insecticidal composition containing pymetrozine and propylene glycol alginate and the application thereof. The insecticidal composition uses pymetrozine and propylene glycol alginate as main active ingredients, wherein the weight ratio of the pymetrozine to the propylene glycol alginate is 0.1-80 to 0.1-60. The insecticidal composition can generate higher synergy, overcome and delay the drug resistance of pests, expand the prevention spectrum, have high desinsection speed, decrease the drug cost and lessen the toxicity. The insecticidal composition can prevent hemiptera pests on crops and particularly can be used for preventing paddy delphacidae and wheat aphids, and the effect of the insecticidal composition is significantly higher than that of single agent.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a compound insecticidal composition with pymetrozine and propylene glycol alginate as main active ingredients and its application. Background technique [0002] Pymetrozine, chemical name: (E)-4,5-dihydro-6-methyl-4-(3-pyridinemethyleneamino)-1,2,4-triazine-3(2H )-ketone. It is a new heterocyclic insecticide developed by Swiss Novartis in 1988 to control aphids and whiteflies. It has the characteristics of high efficiency, low toxicity, high selectivity, and environmental friendliness. Its mode of action is unique: it mainly affects the feeding behavior of insects, making them refuse to eat and die. The drug is effective against both larvae and adults, it can quickly penetrate into plant leaves, and the residual effect period is more than one month, without any cross-resistance, and it is highly safe to natural enemies. Pymetrozine is effective against both larvae and adu...

Claims

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Application Information

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IPC IPC(8): A01N43/707A01N43/16A01P7/04
Inventor 杨寿海陈新春陈文明郭崇友齐武
Owner NANJING HUAZHOU PHARMA
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