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Sterilization composition

A composition and crop technology, applied in the field of pesticides, can solve problems such as ineffective control of disease development, environmental pollution, and increased costs

Inactive Publication Date: 2014-10-01
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the long service life of these agents, the resistance of pathogenic bacteria is getting stronger and stronger. Even if the amount of use is continuously increased, the development of diseases is often still unable to effectively control the development of the disease, which will increase the cost and pollute the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0013] Bioassay example 1: Indoor virulence determination of pyraclostrobin and fluopyram for cucumber downy mildew

[0014] Test object: Cucumber downy mildew (Pseudoperonospora cubensis), collected from the field.

[0015] Test method: The test adopts the leaf disc method, weighs a certain amount of pyraclostrobin and fluopyram technical, dissolved in DMF and prepared into mother liquor, diluted with 0.1% Tween-80 surfactant sterilized water, in On the basis of preliminary experiments, 7 suitable series of mass concentrations were prepared. The two medicinal liquids of pyraclostrobin and fluopyram are mixed according to different mass ratios (50:1, 40:1, 30:1, 20:1, 10:1, 1:1, 1:10, 1: 20, 1:30, 1:40, 1:50) to obtain mixtures of different proportions, and set up a treatment containing only solvents and surfactants without active ingredients as a blank control. Collect fresh cucumber downy mildew diseased leaves in the field, wash the sporangia on the back of the leaves with dei...

example 2

[0028] Bioassay example 2: Indoor virulence determination of pyraclostrobin and fluopyram in a pair of Phytophthora infestans

[0029] Test object: Phytophthora infestans, collected from the field, and separated and purified indoors.

[0030] Test method: The test adopts the leaf disc method. Weigh a certain amount of pyraclostrobin and fluopyram, dissolve it in DMF and prepare the mother liquor, dilute with 0.1% Tween-80 surfactant sterilized water, and prepare 7 on the basis of preliminary experiments Suitable series mass concentration. The two medicinal liquids of pyraclostrobin and fluopyram are mixed according to different mass ratios (50:1, 40:1, 30:1, 20:1, 10:1, 1:1, 1:10, 1: 20, 1:30, 1:40, 1:50) to obtain mixed solutions of different proportions, and set up a treatment containing only solvents and surfactants without active ingredients as a blank control. Wash the cultured sporangia of Phytophthora infestans with sterile water and filter with double gauze to prepare a ...

example 3

[0035] Bioassay example 3: Indoor virulence determination of pyraclostrobin and fluopyram in pairs of Phytophthora capsici

[0036] Test object: Phytophthora capsici Leonian, collected from the field, and separated and purified indoors.

[0037] Test method: Refer to "The People's Republic of China Agricultural Industry Standard NY / T1156.2-2006", using the mycelial growth rate method. Under aseptic conditions, the cultivated capsicum phytophthora spp. was used to take the fungus cake along the edge of the hypha with a sterile punch with a diameter of 5 mm, and the fungus cake was inoculated in the center of the medicated plate with the inoculation needle, with the hyphae facing down. Place in a light incubator at 25°C. According to the survey results of the growth of the control hyphae, the cross method was used to measure the colony diameter of each treatment, and the percentage of inhibition (%) of different agents on the growth of the hyphae was calculated according to the foll...

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Abstract

The invention discloses a sterilization composition. Effective components comprise ametoctradin and fluopicolide. The mass ratio of the ametoctradin to the fluopicolide ranges from 50:1 to 1:50; the preferable ratio ranges from 20:1 to 1:10. The ametoctradin and the fluopicolide are compounded to have an obvious synergistic effect; the dosage and the utilization cost can be reduced. The composition disclosed by the invention is mainly used for preventing and treating crop downy mildew, epidemic diseases and late blight.

Description

Technical field [0001] The invention relates to a bactericidal composition, in particular a pyraclostrobin-containing bactericidal composition and its application for preventing and curing crop diseases, belonging to the technical field of pesticides. Background technique [0002] Downy mildew, blight and late blight are common diseases on vegetables and fruits, and they are very harmful. The evolution rate of pathogenic bacteria that cause these diseases in modern agricultural ecosystems is greater than that in natural ecosystems. With the exchange of agricultural products trade and the promotion of brands, the spread of pathogens has also expanded. After the large-scale use of chemical agents and resistant varieties, some highly virulent pathogenic types have been continuously increased through targeted selection, and then spread to neighboring regions or continents through natural and man-made gene flows, resulting in short-term exposure to chemical agents and resistant varie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01P3/00A01N43/40
Inventor 方治国张华东王开放杨立平王新军曹明章孔建
Owner SHENZHEN NOPOSION AGROCHEM
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