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Composite for preventing and treating gray mold of tobacco and bactericide prepared by composite

A composition and technology of gray mold, applied in the direction of fungicides, biocides, biocides, etc., can solve the problems of increased usage and frequency of use, difficulty in ensuring tobacco gray mold bacteria, etc., to prevent the occurrence of resistance, Effects of controlling tobacco gray mold and reducing consumption

Inactive Publication Date: 2018-09-28
林荣铨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, tobacco gray mold bacteria have not yet developed resistance to difenoconazole, but with the prolongation of use time, the increase in the amount of use and the frequency of use, it is difficult to guarantee that tobacco gray mold bacteria will not develop resistance to difenoconazole resistance

Method used

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  • Composite for preventing and treating gray mold of tobacco and bactericide prepared by composite
  • Composite for preventing and treating gray mold of tobacco and bactericide prepared by composite
  • Composite for preventing and treating gray mold of tobacco and bactericide prepared by composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A composition for preventing and treating tobacco gray mold, comprising the following components: difenoconazole, umbelliferone and graphene oxide, wherein the mass percentages of the three components mixed are shown in Table 1.

[0022] Table 1 The mass percentages of the three components mixed

[0023]

Embodiment 2

[0025] Indoor toxicity assay of composition described in table 1, the process of test is as follows:

[0026] Test object: Tobacco gray mold wild strain (Botrytis cinerea).

[0027] The preparation method of compositions 1 to 8 in Table 1 is as follows: weigh 3 components according to Table 1, then dissolve the 3 components in the ethanol solution, then slowly mix the 3 ethanol solutions while stirring, After mixing and stirring for more than 3 hours, the mother liquor can be prepared and set aside.

[0028] The growth rate method was used to measure the inhibitory rate of compositions 1 to 8 against wild strains of tobacco gray mold, and a group of blank control groups CK were set up, with single doses of difenoconazole, umbelliferin and graphene oxide as For comparison, the results are shown in Table 2.

[0029] Table 2 Composition 1~8 is to the inhibition rate result of tobacco gray mold wild strain

[0030]

[0031]

[0032] As can be seen from Table 2, under the ...

Embodiment 3

[0043] Compositions 1 to 7 are used as active ingredients, which can be processed into suitable dosage forms for use according to the control environment and use requirements of tobacco gray mold. Among them, the commonly used suitable dosage forms are wettable powder, water dispersible granule, suspension concentrate, emulsifiable concentrate or granules.

[0044] Among them, when processed into wettable powder, the mass percentage of each raw material is: 10% to 50% of any composition in the above compositions 1 to 8, 1% to 8% of the dispersant, and 1% to 8% of the wetting agent. 2% to 8%, and then make up to 100% with filler.

[0045] When processed into water-dispersible granules, the mass percentage of each raw material is: 10%-80% of any composition in the above-mentioned compositions 1-8, 1%-8% of the dispersant, and 2% of the wetting agent. % to 8%, the binder is 0.5% to 5%, the disintegrant is 0.2% to 5%, and then filled to 100%.

[0046]When processed into a suspen...

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PUM

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Abstract

The invention discloses a composite for preventing and treating gray mold of tobacco and a bactericide prepared by the composite. The composite is prepared from, by mass, 50-75% of difenoconazole, 10-40% of umbelliferone and 0.1-20% of oxidized graphene. According to the composite for preventing and treating gray mold of tobacco, difenoconazole, a plant extract (umbelliferone) and oxidized graphene are mixed, and the three components achieve synergism within a specific proportion range; the mixed composite reduces the dosage of difenoconazole and meanwhile has great inhibition activity on graymold of tobacco, wherein the inhibition activity is equivalent to that of a single agent (difenoconazole). After the mixed composite is made into the bactericide for use, gray mold of tobacco can beeffectively prevented and treated, the dosage of difenoconazole can also be reduced at the same time, and the situation is slowed down and / or avoided that pathogenic bacteria of gray mold of tobacco has resistance to difenoconazole.

Description

technical field [0001] The invention relates to the technical field of preventing and treating tobacco gray mold, and more particularly relates to a composition for preventing and treating tobacco gray mold and a bactericide prepared therefrom. Background technique [0002] Tobacco gray mold mainly damages the stems, leaves and flower organs of tobacco plants. When the disease occurs at the seedling stage, it is easy to cause the stems and leaves of the tobacco plant to rot, and a gray-brown mold layer will sprout on the surface of the diseased part; when the disease occurs from the cluster stage to the prosperous long-term in the field, the parts of the tobacco plant affected by the disease are mainly the middle and lower leaves , when the leaf surface is infected, the infected part of the leaf surface presents round or nearly round lesions. In the later stage, the lesions are broken and cause perforation; when the pathogenic bacteria infect from the leaf tip, the lesions ...

Claims

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Application Information

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IPC IPC(8): A01N43/653A01N43/16A01N59/00A01P3/00
CPCA01N43/653A01N43/16A01N59/00
Inventor 林荣铨
Owner 林荣铨
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