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Bactericidal composite containing prothioconazole and nisin

A technology of nisin and prothioconazole, which is applied in the direction of fungicides, biocides, biocides, etc., can solve problems such as unsatisfactory control effects, increased resistance of pathogenic bacteria, and difficult disease control, etc., to achieve synergistic growth Obvious effect, long-lasting effect, not easy to resist

Inactive Publication Date: 2020-03-17
江西正邦作物保护股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the difficulty of disease control is becoming more and more difficult, the planting structure is changing, the resistance of pathogenic bacteria is increasing, the control effect of single agent is not satisfactory, and the control of plant diseases is facing huge challenges.

Method used

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  • Bactericidal composite containing prothioconazole and nisin
  • Bactericidal composite containing prothioconazole and nisin
  • Bactericidal composite containing prothioconazole and nisin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Indoor Toxicity Determination of Prothioconazole and Nisin Compounded to Wheat Powdery Mildew

[0023] Determination method of indoor antibacterial effect: The growth rate method is used to determine the inhibitory effect of the fungicidal composition on wheat powdery mildew pathogen. Take 5mm-diameter mycelium blocks from the edge of wheat take-all colonies cultured on PDA medium for 4 days and inoculate them on PDA medium plates containing different concentrations of fungicides, culture at a constant temperature of 28°C, and use the plates without agents as blank As a control, measure the colony diameter of each treatment after 4 days, and calculate the inhibitory percentage of the medicament to mycelial growth. Through the regression analysis of the logarithm of each treatment dose and the probability value of mycelial growth inhibition rate, the inhibitory medium concentration (EC) of the treatment fungicide to wheat powdery mildew was calculated. s0 ), a...

Embodiment 2

[0033] Example 2 Indoor Toxicity Determination of Prothioconazole and Nisin Compound to Wheat Sheath Blight

[0034] Determination method of indoor antibacterial effect: The growth rate method is used to determine the inhibitory effect of the fungicidal composition on wheat sheath blight. Take mycelia pieces with a diameter of 5 mm from the edge of wheat sheath blight colonies cultured on PDA medium for 4 days and inoculate them on PDA medium plates containing different concentrations of fungicides, culture at a constant temperature at 28°C, and use the plates without agents as blank As a control, measure the colony diameter of each treatment after 4 days, and calculate the inhibitory percentage of the medicament to mycelial growth. The logarithm of each treatment dose and the probability value of mycelial growth inhibition rate were used for regression analysis to calculate the inhibitory medium concentration (EC) of fungicides on wheat sheath blight. 50 ), and then calculat...

Embodiment 3

[0043] Example 3 Indoor Toxicity Determination of Prothioconazole and Nisin Compound to Wheat Fusarium Wilt

[0044] Determination method of indoor antibacterial effect: The growth rate method is used to determine the inhibitory effect of the fungicidal composition on wheat Fusarium wilt. Take mycelium blocks with a diameter of 5 mm from the edge of the wheat root rot colony cultured on PDA medium for 4 days and inoculate them on PDA medium plates containing different concentrations of fungicides, and culture them at a constant temperature at 28°C. As a control, measure the colony diameter of each treatment after 4 days, and calculate the inhibitory percentage of the medicament to mycelial growth. Through the regression analysis of the logarithm of each treatment dose and the probability value of mycelial growth inhibition rate, the inhibitory medium concentration (EC) of the treatment fungicide to wheat wilt was calculated. 50 ), and then calculate the co-toxicity coefficien...

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Abstract

The invention discloses a bactericidal composite containing prothioconazole and nisin. The bactericidal composite comprises effective components: prothioconazole and nisin, and the mass ratio of prothioconazole to nisin is 1-80:1-80. The bactericidal composite can be applied to prevention and treatment of bacterial diseases of fruit trees, vegetables and cereal crops, has an obvious synergistic effect, delays the drug resistance of pathogenic bacteria, has a long lasting period, reduces the drug use frequency and dosage, and reduces the use cost. The bactericidal composite can be used for preventing and treating diseases such as wheat powdery mildew, banded sclerotial blight, wilt and leaf spot, and has a remarkable effect.

Description

technical field [0001] The invention relates to the field of agricultural disease prevention and control, in particular to a combined fungicide containing prothioconazole and nisin. Background technique [0002] Prothioconazole, the mechanism of action of prothioconazole is to inhibit the demethylation at the 14th position of lanosterol or 24-methylene dihydromimaudine, the precursor of sterol in fungi, that is, demethylation Inhibitors (DMIs). Not only has good systemic activity, excellent protection, treatment and eradication activity, but also has a long lasting effect. Through a large number of field efficacy tests, the results show that prothioconazole not only has good safety for crops, but also has a good effect on disease prevention and treatment, and has a significant increase in yield. Compared with triazole fungicides, prothioconazole has more Broad-spectrum bactericidal activity. [0003] Prothioconazole is mainly used to prevent and control many diseases of c...

Claims

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Application Information

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IPC IPC(8): A01N43/653A01N43/90A01P3/00A01P1/00
CPCA01N43/653A01N43/90
Inventor 李思源谢远芳代新红李渊泉朱植银周蕲李扬肖永良
Owner 江西正邦作物保护股份有限公司
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