A kind of dimethomorph and thiram fungicide and its preparation method and application

A technology of use and oil preparation, applied in the field of preparation of ultra-low volume spray oil, can solve the problems of reducing the use of pesticides, covering a large area, and using a large amount, so as to reduce the use of pesticides, cover a large area, and reduce the use of pesticides. amount of effect

Active Publication Date: 2021-07-27
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention has developed an ultra-low-capacity spray oil containing dimethomorph and thiram suitable for spraying by plant protection drones, which has excellent solubility and stability, small droplets, large coverage area, and evaporation resistance Good, long-lasting effect, improves the control effect of dimethomorph and thiram, reduces the amount of pesticides used, overcomes the shortcomings of conventional spraying such as long time consumption, large amount of use, and poor control effect, and the alkene-containing compound of the present invention The ultra-low-capacity spray oil of morpholine·thiram has no obvious phytotoxicity in the flight defense operation of plant protection drones

Method used

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  • A kind of dimethomorph and thiram fungicide and its preparation method and application
  • A kind of dimethomorph and thiram fungicide and its preparation method and application
  • A kind of dimethomorph and thiram fungicide and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: 1% dimethomorph · thiram ultra-low volume spray oil

[0028]

[0029] Preparation method: under normal temperature and pressure, weigh the original drug of the formulated amount, and add a certain amount of solvent to it to completely dissolve it, then add the anionic surfactant and nonionic surfactant of the formulated amount, stir Uniform, then add oily solvent and filler in turn, stir for 10-20 minutes, and finally obtain a single transparent homogeneous light yellow 1% dimethomorph ultra-low volume spray oil.

Embodiment 2

[0030] Example 2: 1% dimethomorph · thiram ultra-low volume spray oil

[0031]

[0032] The preparation method is the same as in Example 1.

Embodiment 3

[0033] Example 3: 2% dimethomorph · thiram ultra-low volume spray oil

[0034]

[0035] The preparation method is the same as in Example 1.

[0036] The prepared ultra-low-capacity spray oils containing dimethomorph and thiram are all light yellow single-phase transparent homogeneous liquids, and there is no stratification and no precipitation at cold storage at -5°C. In addition, the field test found that the prepared agent had good control effect on litchi downy mildew and had no obvious phytotoxicity. The study of its physical and chemical properties shows that the drug has good solubility, stable dosage form and strong evaporation resistance. The measured properties are shown in Table 1.

[0037] Table 1: Part of the physical and chemical properties measured in Examples 1-3

[0038]

[0039] Examples of bioassays

[0040] The 1% dimethomorph · thiram ultra-low volume spray oil prepared in Example 1 was subjected to indoor activity test and field drug efficacy tes...

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Abstract

The invention relates to a dimethomorph and thiram fungicide, a preparation method and application thereof. The bactericide ultra-low volume spray oil comprises: dimethomorph, thiram, solvent, oily solvent, filler and surfactant. The spray oil agent of the invention has the advantages of simple processing, high efficacy, safety and environmental protection, no phytotoxicity, and good control effect on fungal diseases. In the aerial defense operation of plant protection drones, its formula has a 92.6% effect on the prevention and control of litchi downy mildew within 7 days.

Description

technical field [0001] The invention belongs to the field of pesticide preparations, and in particular relates to a preparation method and application of an ultra-low-capacity spray oil containing dimethomorph and thiram. Background technique [0002] Dimethomorph belongs to morpholine broad-spectrum, low-toxicity fungicides with systemic properties. Dimethomorph has a strong inhibitory effect on Phytophthora capsici mycelium growth, sporangia production and zoospore release. Dienoylmorph The biochemical target of morpholine does not act on the synthetic pathways of DNA, RNA, protein and lipid, and the respiration process, and does not affect the sugar metabolism of cells and the production of cell wall polymers, but affects the rearrangement of cell wall molecular structure, Interfering with the assembly of pathogenic cell wall aggregates, thereby interfering with the formation of cell walls, destroying the formation of fungal cells, and ultimately causing fungal cell death...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/06A01N43/84A01N47/26A01P3/00
CPCA01N25/06A01N43/84A01N47/26
Inventor 罗会刘琴韦昆王晓宇李兴忠
Owner GUIZHOU UNIV
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