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Bactericidal composition

The technology of a composition and isobacteron is applied in the field of pesticides to achieve the effects of reducing the amount and frequency of use of pesticides, reducing production and use costs, and delaying the drug resistance of pathogenic bacteria

Inactive Publication Date: 2017-08-29
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no report on the compound development of iprodione and mandestrobin for the control of crop diseases, especially sclerotinia, gray mold and brown spot

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Biological Assay Example 1: Indoor Toxicity Determination Test of Mandestrobin and Iprodione Compound to Strawberry Botrytis Botrytis

[0017] Test object: Wild-type sensitive Botrytis cinerea strain (Botrytis cinerea Pers)

[0018] experiment method:

[0019] Determination by leaf inhibition method (refer to NY / T 1156.9-2008). On the basis of the pre-test, mandestrobin and iprodione were prepared to the required concentration, ready to use; from the test strawberry, cut healthy leaves with 1cm-2cm petioles that were fully expanded, uniform in leaf age, and wiped with wet cotton. The petiole is wrapped by the ball and placed in a petri dish, and kept moist for later use; the liquid medicine is evenly sprayed on the back of the leaves, and 10 leaves are treated, and repeated 4 times. After the medicinal solution was naturally air-dried, put the leaves of each treatment with their backs up, and discharge them in a petri dish according to the treatment label to keep them...

Embodiment 2

[0030] Bioassay Example 2: Indoor virulence assay test of mandestrobin and iprodione compound against Sclerotinia sclerotiorum

[0031] Test object: Sclerotinia sclerotiorum (Lib.) de Bary)

[0032] experiment method:

[0033] Indoor growth rate method was used (Zhou Feng, Synergistic effect of tebuconazole and sclerotinia on the pathogenic bacteria of Sclerotinia sclerotiorum, 2013, 52(8): 602-605). On the basis of the preliminary test, mandestrobin and iprodione were prepared into PDA medium plates with different concentrations, and a fresh sclerotia cake with a diameter of 6mm was placed in the center of each plate, and each treatment was repeated 4 times. , cultivated in an incubator at 26°C for 48 hours, measured the colony diameter by the cross method, and took the average value, in mm.

[0034] The CTC (Co-toxicity Coefficient) adopts Sun Yunpei's method, specifically referring to the method described in Example 1 of biological assay.

[0035] Table 2 Indoor toxicity...

Embodiment 1

[0041] 51% mandestrobin. Iprodione water dispersible granules

[0042]

[0043] The mandestrobin original drug, iprodione original drug and corresponding auxiliary agents are weighed according to the mass ratio, and the water-dispersible granules of the present invention are prepared after crushing, mixing, granulating and sieving by wet granulation.

[0044] In this embodiment, the mass ratio of mandestrobin to iprodione can be changed between 50:1-1:50, and the total mass percentage of the two is still 51%, forming a new embodiment.

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Abstract

The invention discloses a bactericidal composition, which comprises the active ingredients of mandestrobin and iprodione at the mass ratio of (1:50) to (50:1). The composition can be used for preventing and treating multiple diseases on crops, is especially suitable for prevention and treatment of botrytis and brown patch, and has the characteristics of being low in dosage, obvious in synergistic effect and good in security.

Description

technical field [0001] The invention relates to a pesticide composition, in particular to a bactericidal composition containing mandestrobin and its application for preventing and controlling crop diseases, and belongs to the technical field of pesticides. Background technique [0002] Mandestrobin is a methoxyacrylate fungicide developed by Sumitomo, Japan. It is a cytochrome bc1 complex inhibitor. It has the characteristics of broad spectrum and systemic absorption, and has the best preventive application effect. In recent years, it has been registered in the European Union, Canada and Australia. It is mainly used to prevent brown rot of stone fruits (apricots, cherries, peaches, plums), white rot of grapes, gray mold and powdery mildew, strawberry gray mold, and rape sclerotia. diseases and lawn diseases, the dosage of active ingredients is 210-420g / hm 2 . It is especially suitable for compound development with fungicides with different mechanisms of action. [0003] I...

Claims

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Application Information

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IPC IPC(8): A01N47/38A01N37/18A01P3/00
CPCA01N47/38A01N37/18A01N2300/00
Inventor 黄柯程王芳张坤吴成林胡欢欢马金龙
Owner SHENZHEN NOPOSION AGROCHEM
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