Water dispersible granules containing pyraclostrobin and preparation method thereof

A technology of pyraclostrobin and dispersible granules, applied in botany equipment and methods, fungicides, biocides, etc., can solve problems such as difficulty passing through 75 μm test sieve, difficulty in disintegrating into water, low melting point, etc., and achieve enhanced crop production The effect of disease resistance, low production cost and simple preparation process

Inactive Publication Date: 2016-06-29
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that pyraclostrobin single agent or compound water-dispersible granule has low melting point, and it is difficult to disintegrate in water after boiling granulation, which makes it difficult to pass the 75 μm test sieve.

Method used

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  • Water dispersible granules containing pyraclostrobin and preparation method thereof
  • Water dispersible granules containing pyraclostrobin and preparation method thereof
  • Water dispersible granules containing pyraclostrobin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Indoor Toxicity Test of Pyraclostrobin and Bixafen Compound to Banana Scab

[0027] Test object: Banana scab fungus (Macrophomamusae), collected from the field.

[0028] Test method: the test adopts the leaf disc method, weigh a certain amount of pyraclostrobin and bixafen original drug, dissolve in DMF and prepare mother liquor, and dilute with 0.1% Tween-80 surfactant sterilized water , based on the pre-experiment to prepare 7 suitable series of mass concentrations. The two medicinal solutions of pyraclostrobin and bixafen were mixed according to different mass ratios (50:1, 20:1, 10:1, 1:1, 1:10, 1:20, 1:50) Mix to obtain mixed solutions with different proportions, and set the treatment containing only solvent and surfactant but no active ingredient as blank control. Collect fresh banana peel scab disease leaves in the field, rinse the sporangia on the back of the leaves with deionized water, and prepare 1 × 10 8 ~1.5×10 8 sporangia / L suspension for inoculation. ...

Embodiment 2

[0041] Indoor Toxicity Determination of Pyraclostrobin and Bixafen Compound against Apple Spotted Deciduous

[0042] Test object: Alternaria alternariaf. spmali, collected from the field, and isolated and purified indoors.

[0043] Test method: refer to the "People's Republic of China Agricultural Industry Standard NY / T1156.2-2006", using the mycelium growth rate method. Under aseptic conditions, use a sterilized hole puncher with a diameter of 5mm to punch out the fungus cake along the edge of the mycelia, and use an inoculation needle to inoculate the fungus cake on the center of the plate containing the medicine, with the mycelium facing down , placed in a light incubator at 25°C. Depending on the results of investigation of the control mycelium growth situation, adopt the cross method to measure the colony diameter of each treatment respectively, and calculate the inhibition percentage (%) of different medicaments to mycelium growth according to the following formula, whe...

Embodiment 3

[0052] Weigh 50.0 g of pyraclostrobin technical material, 1.0 g of bixafen technical drug, 5.0 g of calcium lignosulfonate, 1.0 g of sodium lauryl sulfonate, 10.0 g of ammonium sulfate, 2.0 g of corn starch and Diatomaceous earth makes up 100g. After mixing evenly, it is pulverized into a mother powder with a particle size of 0.5 μm to 30 μm by an ultra-fine jet mill, and then the mother powder is added to water and mixed evenly, and then added to a boiling granulator at a boiling temperature of 65°C to 75°C for granulation. After drying and sieving, a 51% pyraclostrobin-bixafen water-dispersible granule was obtained. This example is used to prevent and treat wheat leaf rust. The test was carried out in Nijing Town, Changli County, Hebei Province in May 2015. Wheat leaf rust has occurred seriously in the test site over the years. See Table 3 for details of test agents and doses, each treatment was repeated 4 times, and the area of ​​the plot was 20m 2 , a total of 16 plots, ...

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Abstract

The invention relates to water dispersible granules containing pyraclostrobin. The water dispersible granules containing pyraclostrobin comprise the following ingredients: 5%-80% of active ingredients, 1%-10% of a dispersing agent, 1%-8% of a wetting agent, 1%-10% of a disintegrating agent, 1%-5% of a binding agent and the balance of a filler. The preparation method comprises the steps of performing uniform mixing, ultrafine grinding, granulation, drying and sieving on the raw materials to obtain the water dispersible granules. The two compounded granules have an obvious synergistic effect than a mono-agent, the problems of difficult disintegration and the like of single pyraclostrobin or compounded water dispersible granules due to low melting point is solved, and the defects of dust flying and the like of wettable powder during production and use processes are overcome; the water dispersible granules have the advantages of high active ingredient content, high disintegration speed, good dispersity, high thermal stability, less environmental pollution and the like, has good control effects on wheat leaf rust, powdery mildew of cucumber, alternania mail Roberts and macrophoma musae when in use, and is high in safety.

Description

technical field [0001] The invention relates to a water-dispersible granule containing pyraclostrobin and belongs to the technical field of pesticide preparations. Background technique [0002] Pyraclostrobin is a broad-spectrum methoxyacrylate fungicide, which has protective, therapeutic and penetrating effects. It works by inhibiting the mitochondrial respiration of pathogens. It can significantly improve crop immunity and promote crop growth. It is mainly used in bananas. On fruit tree crops such as apples, grapes, etc., it has a significant effect on diseases such as banana scab and apple leaf spot. At present, emulsifiable concentrate is used as the main dosage form, and single continuous medication for many years has produced obvious drug resistance, and the use of emulsifiable concentrate solvent for many years has also caused damage to the environment. Therefore, there is an urgent need to compound pyraclostrobin with other high-efficiency fungicides to develop new ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/24A01N25/14A01P3/00
CPCA01N47/24A01N25/14A01N2300/00
Inventor 刘磊邦黄柯程曹欢袁伏中文琴曹明章高彬李广泽
Owner SHENZHEN NOPOSION AGROCHEM
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