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Pyraclostrobin-fluazinam composition as well as bactericide and preparation method thereof

A technology of pyraclostrobin and fluazinam, applied in the field of pesticides, can solve the problems of strong permeability, easy melting, burning leaves, etc., and achieve good stability

Pending Publication Date: 2020-11-10
南京南农农药科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pyraclostrobin and fluazinam are low-melting compounds, which are prone to melting during subsequent operations such as grinding that are necessary for pesticide products, and the prepared products are easy to crystallize and solidify at low temperatures, and are easy to store at room temperature. The growth of the particle size leads to a decrease in the suspension rate, and due to the high content of fluazinam, its permeability is strong, and it is easy to cause phytotoxicity such as drug spot and burnt leaves when used in leafy vegetables

Method used

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  • Pyraclostrobin-fluazinam composition as well as bactericide and preparation method thereof
  • Pyraclostrobin-fluazinam composition as well as bactericide and preparation method thereof
  • Pyraclostrobin-fluazinam composition as well as bactericide and preparation method thereof

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Experimental program
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Effect test

preparation example Construction

[0109] The third aspect of the present invention provides a method for preparing the bactericide containing pyraclostrobin and fluazinam, comprising the following steps: mixing pyraclostrobin and fluazinam with the remaining preparation raw materials After that, it is obtained after grinding.

[0110] The fourth aspect of the present invention provides an application of the pyraclostrobin and fluazinam fungicides for the prevention and control of fungal diseases of cereals, melons and vegetables.

Embodiment 1

[0114] Synergistic coefficient (SR) test: refer to the method in NY T 1156.2-2006 standard. Test target: The strain used is JSHA1706, which was collected from vegetable greenhouses in Huai'an City, Jiangsu Province in 2017. Select the 4-6 leaves of cucumber from top to bottom, cut out the leaves with 1-2cm petiole in the same position, with the same growth, wrap the petiole with wet cotton ball and place it in a petri dish, keep it moist for later use. The pyraclostrobin used was purchased from Shandong Hailier Company, with a content of 97 wt%; the technical fluazinam was purchased from Zhejiang Hetian Chemical, with a content of 98 wt%.

[0115] The test procedure is: (1) preparation of pathogenic bacteria suspension: select the leaves of natural disease in the field, wash the sporangia of the target spot fungus on the back of the leaves with 4°C distilled water, and make a suspension (concentration is controlled at 1 × 10 per milliliter). 5 ~1×10 7 sporangia) and stored a...

Embodiment 2

[0122] Embodiment 2 of the present invention provides a composition of pyraclostrobin and fluazinam, comprising the following components: pyraclostrobin and fluazinam, and the weight ratio of the two is 1:2.

[0123] This embodiment also provides a fungicide suspension containing pyraclostrobin and fluazinam, the raw materials for its preparation include 37.5 parts of the composition of pyraclostrobin and fluazinam in parts by weight , 52 parts of additives, 10.5 parts of additives.

[0124] The auxiliary agent is a combination of a wetting agent, a dispersing agent, a carrier and a solvent, and the weight ratio of the four is 1:5:5:41. The dispersant is a combination of EO / PO block polyether dispersant and polycarboxylate dispersant, the weight ratio of the two is 1:1.5; the EO / PO block polyether dispersant is BASF's Pluronic series Product, Pluronic PE6800, the content of EO is 80wt%; The polycarboxylate dispersant is HDB-3800E of Debon Chemical Technology Company. The wet...

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Abstract

The invention discloses a pyraclostrobin-fluazinam composition. The composition is prepared from pyraclostrobin and fluazinam, wherein the weight ratio of pyraclostrobin to fluazinam is (1: 40)-(40: 1). According to the composition, pyraclostrobin and fluazinam are compounded to achieve a synergistic effect on prevention and treatment of fungal diseases of various cereals, melons and fruits and vegetables; a bactericide prepared from the composition is not easy to melt in the grinding preparation process, and the prepared product is not easy to crystallize and solidify at low temperature, hasgood stability, is not easy to flocculate and precipitate after being stored for a long time at normal temperature and is not easy to lower in suspension rate. When the bactericide is used for leaf vegetable crops, pesticide spots, burnt leaves and other phytotoxicity can be avoided.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a composition of pyraclostrobin and fluazinam, a fungicide and a preparation method thereof. Background technique [0002] Pyraclostrobin, the common English name of pyraclostrobin, belongs to methoxyacrylate compounds. Pyraclostrobin is a broad-spectrum fungicide, which has excellent control effects on powdery mildew, downy mildew and gray mold of various crops. Fluazinam, the English common name Fluazinam, belongs to pyridinamine derivatives. It belongs to dinitroaniline fungicides. It achieves bactericidal effect by resisting spore germination, hyphae breakthrough, growth and spore formation. It has no therapeutic effect and systemic activity. It is a broad-spectrum and efficient protective fungicide. genus Phytophthora, Phytophthora, Plasmodium, Sclerotinia and Scabella had significant bactericidal effects. [0003] At present, the existing technology mainly uses the co...

Claims

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Application Information

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IPC IPC(8): A01N47/24A01N43/40A01P3/00
CPCA01N43/40A01N47/24
Inventor 王维倪志伟张兵
Owner 南京南农农药科技发展有限公司