Gossypol-containing acaricidal composition

A composition and technology of gossypol, applied in the direction of acaricide, biocide, animal repellent, etc., can solve the problem of heavy resistance, achieve good effect, high field control effect, and low pesticide residue effect

Active Publication Date: 2017-10-24
SHANDONG RICE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the resistance is relatively heavy, and there are few effective agents

Method used

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  • Gossypol-containing acaricidal composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1 Preparation of the acaricidal composition containing gossypol

[0012] 1.1 11% gossypol. spirodiclofen (1:10) emulsion in water

[0013] Composition in weight percent: gossypol 1%; spirodiclofen 10%; solvent naphtha 27.0%; sodium dodecylbenzenesulfonate 1.4%; phenylethylphenol polyoxyethylene ether 3.6%; butanol 1.0%; ethylene glycol 5.0%; silicone defoamer 0.05%; pure water to make up to 100%.

[0014] Preparation: Dissolve butanol, ethylene glycol, and silicone defoamer in water to form a water phase; dissolve gossypol and spirodiclofen in solvent oil, and then add an emulsifier to completely dissolve to form an oil phase; The oil phase was added to the water phase, and after high-speed shearing, an 11% gossypol-spirofen-in-water emulsion sample was prepared.

[0015] 1.2 21% gossypol-spirofen (1:20) microemulsion

[0016] Composition in weight percent: gossypol 1%; spirodiclofen 10%; methyl oleate 25%; sodium dodecylbenzenesulfonate 2%; phenylethylphe...

Embodiment 2

[0024] Example 2 Indoor Bioassay

[0025] The combined toxicity of gossypol and spirodiclofen to Tetranychus cinnabarinus and Tetranychus urticae were respectively determined by spray method: broad bean seedlings were inoculated with female adult mites, and the eggs were removed one day after laying eggs, and gossypol and Different proportions of spirodiclofen were prepared into emulsions of different concentrations with 0.1% Tween 80, sprayed with a Potter spray tower, and the number of dead insects was checked after 48 hours, and the LC was calculated by SPSS 13.0 50 with the regression equation. Among them, co-toxicity coefficient (CTC) ≥ 120 indicates synergistic effect; 80 < CTC < 120 indicates additive effect; CTC ≤ 80 indicates antagonistic effect. The test results are shown in Table 1 and Table 2.

[0026] Test drug

[0027] Test drug

[0028] From the data in the table, it can be seen that under indoor conditions, the LC of gossypol and spirodicl...

Embodiment 3

[0029] Embodiment 3 field efficacy test

[0030] Adopt 24% gossypol-spirodiclofen suspending agent and 24% spirodiclofen suspending agent in embodiment 1.3 to prevent and control cotton spider mites: each plot area is 50m 2 , repeat 4 times, use an electric sprayer to spray and control, and the water consumption is 1125kg / hm 2 , and the blank control was sprayed with the same amount of water. Investigate the base number of pest mites in each treatment before spraying, 1, 3, and 7 days after spraying, randomly pick 5 leaves from each treatment, and calculate the number of live mites remaining, and calculate the corrected mortality rate. The test results are shown in Table 3.

[0031] Table 3 Field efficacy test of 24% gossypol-spirodiclofen suspension concentrate on cotton spider mite

[0032]

[0033] Note: Different letters in the same column in the table indicate significant difference at p<0.05 level.

[0034] It can be seen from the data in the above table that the c...

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Abstract

The invention provides gossypol-containing acaricidal composition. Active ingredients of the gossypol-containing acaricidal composition comprise gossypol and spirodiclofen, a mass ratio of gossypol to spirodiclofen is 1:(10-50), and the composition is prepared from the active ingredients with total content being 5.5w.t%-52w.t% and the balance of auxiliary materials. A dosage form of the acaricidal composition is selected from one of wettable powder (WP), water dispersible granules (WDG), a microemulsion (ME), an emulsion in water (EW) or a suspension concentrate (SC). The gossypol-containing acaricidal composition has good effects on various phytophagous harmful acarids of crops and is high in field control efficacy and safe to plants, people and livestock, the usage quantity of a chemical agent is small, and the quantity of pesticide residues in agricultural products is small.

Description

technical field [0001] The invention relates to an acaricidal composition containing gossypol and belongs to the field of phytochemical protection. Background technique [0002] Cotton spider mite, also known as cotton spider mite, is dominated by Tetranychus cinnabarinus, which occurs in various cotton regions in my country. In addition to harming cotton, it also harms corn, sorghum, wheat, soybeans, etc. Wide range of hosts. Cotton spider mite mainly pricks and sucks juice on the back of cotton leaves, causing damage symptoms such as yellow spots, red leaves and fallen leaves on the leaves, which looks like a fire, commonly known as "fire dragon". Cotton spider mite can harm cotton throughout its growth period, and in the year of outbreak, it will cause large-scale production reduction or even no harvest. At present, the resistance is relatively heavy, and there are few effective agents. Two-spotted spider mite, also known as white spider, is an important worldwide pest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/12A01N35/04A01P7/02
CPCA01N35/04A01N43/12A01N2300/00
Inventor 马惠王红艳陈博聪杨军朱其松
Owner SHANDONG RICE RES INST
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