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Pesticide composition containing isothiocyanate compound and application thereof in prevention and treatment of plant diseases

A technology of isothiocyanate and phenolic compounds, applied in the direction of plant growth regulators, botanical equipment and methods, applications, etc., to achieve the effects of comprehensive control, low residue, and improved control effect

Pending Publication Date: 2021-06-08
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the combination of 2-phenylethyl isothiocyanate or 1-(2-isothiocyanatoethyl)-4-methoxybenzene and small molecular phenolic compounds and plant-derived essential oils for sterilization

Method used

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  • Pesticide composition containing isothiocyanate compound and application thereof in prevention and treatment of plant diseases
  • Pesticide composition containing isothiocyanate compound and application thereof in prevention and treatment of plant diseases
  • Pesticide composition containing isothiocyanate compound and application thereof in prevention and treatment of plant diseases

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: the bactericidal composition of isothiocyanate compound and small molecule phenolic compound, comprises active component A and active component B (as shown in structure), and described active component A is 2-phenyl ethyl Isothiocyanate (Y-1) or 1-(2-isothiocyanatoethyl)-4-methoxybenzene (Y-2), purity>98%; said active ingredient B 1 It is a small molecule phenolic compound with a purity of >98%.

[0015]

Embodiment 2

[0016] Example 2: Determination of 2-phenylethyl isothiocyanate and active components to six kinds of plant pathogenic bacteria indoor antibacterial activity and results

[0017] The phytopathogenic bacteria used in this experiment were strains stored at 4°C in the laboratory, and the medium used was potato agar dextrose medium (abbreviated as PDA). PDA medium formula: potato (peeled) 200g, glucose 20g, agar 15g, distilled water 1000mL, natural pH.

[0018] The mixed synergistic effect of fungicides is calculated according to the Wadley (1967) formula to calculate the synergistic effect coefficient after mixing different agents:

[0019]

[0020]

[0021] In the formula, a and b represent 2-phenylethyl isothiocyanate (A), small molecule phenolic compound (B 1 ) The ratio EC of the two agents in the mixture 50 (A), EC 50 (B) represent the actual observed EC 50 value, EC 50 (Exp) represents the theoretical EC of two agents A and B mixed according to a:b 50 value, EC ...

Embodiment 3

[0033] Example 3: 1-(2-Isothiocyanatoethyl)-4-methoxybenzene and active ingredient B 1 Determination and results of indoor antibacterial activity against six plant pathogenic bacteria

[0034] The phytopathogenic bacteria used in this experiment were strains stored at 4°C in the laboratory, and the medium used was potato agar dextrose medium (abbreviated as PDA). PDA medium formula: potato (peeled) 200g, glucose 20g, agar 15g, distilled water 1000mL, natural pH.

[0035] The mixed synergistic effect of fungicides is calculated according to the Wadley (1967) formula to calculate the synergistic effect coefficient after mixing different agents:

[0036]

[0037]

[0038] In the formula, a and b represent 1-(2-isothiocyanatoethyl)-4-methoxybenzene (A), small molecule phenolic compound (B 1 ) The ratio EC of the two agents in the mixture 50 (A), EC 50 (B) represent the actual observed EC 50 value, EC 50 (Exp) represents the theoretical EC of two agents A and B mixed ac...

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PUM

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Abstract

The invention belongs to the field of natural pharmaceutical chemistry, and discloses a bactericide composition containing 2-phenethyl isothiocyanate (Y-1) or 1-(2-isothiocyanoethyl)-4-methoxybenzene (Y-2) and a small molecular phenolic compound or plant source essential oil. The compound composition can be used for preventing and treating diseases caused by sclerotinia sclerotiorum, rhizoctonia solani, fusarium graminearum, botrytis cinerea, magnaporthe oryzae and fusarium oxysporum of cotton, overcomes the defects existing when the antibacterial compound is singly used, reduces the use dosage of pesticides, reduces the influence of the pesticides on the environment, and reduces the medication cost. The active component A, the active component B1 and the active component B2 are respectively origanum vulgare essential oil O1, clove essential oil O2, thyme essential oil O3 and cinnamon essential oil O4.

Description

technical field [0001] The bactericidal composition involved in the present invention is based on 2-phenylethyl isothiocyanate or 1-(2-isothiocyanatoethyl)-4-methoxybenzene and small molecule phenolic compounds or plant sources The essential oil is an active ingredient, and specifically relates to its use in preventing and treating fungal diseases caused by Sclerotinia sclerotiorum, Rhizoctonia solani, Botrytis cinerea, wheat scab, cotton wilt, and rice blast. Background technique [0002] Plant disease is one of the main factors affecting agricultural production. According to the estimation of the Food and Agriculture Organization of the United Nations, the annual loss of grain and cotton production in the world is more than 10% due to disease. At present, the prevention and control of plant diseases in countries around the world mainly uses chemical agents. However, due to the long-term use of chemical agents, a series of serious problems such as residues, pollution, resis...

Claims

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Application Information

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IPC IPC(8): A01N47/46A01N31/08A01N31/16A01P3/00
CPCA01N31/08A01N31/16A01N47/46
Inventor 刘映前孙钰张智军马越胡勇梅贺颖慧王朝辉杜莎莎吴天琳唐晨王仁轩杨程杰
Owner LANZHOU UNIVERSITY
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