Bactericidal composition containing penconazole and thiophonate-methyl

Abstract

The invention belongs to the field of agricultural bactericides, and provides a bactericidal composite comprising penconazole and thiophanate-methyl, wherein, the weight percentage of the penconazole and the thiophanate-methyl is 0.1-80: 15-80. In addition to effective components, other additives and carriers are added to be prepared into a suspending agent, a wettable powder and a water dispersible granule, which is applied to the disease control of fruit trees, melons and wheat, the bactericidal composite is characterized by curing and protection effects on crop pests, wide bactericidal spectrum, remarkable effect, extremely strong bactericidal power, low service cost and no damage to crops and environment.

Description

technical field

[0001] The invention belongs to the technical field of pesticide sterilization, and relates to a bactericidal composition. The active ingredients are composed of penconazole and thiophanate-methyl, which are used for disease prevention and treatment of fruit trees, melons and wheat, and are especially suitable for pear black star disease, watermelon powdery mildew and wheat powdery mildew. Background technique

[0002] Penconazole, a triazole highly active fungicide with systemic, therapeutic, protective, and eradicating effects, inhibits sterol demethylation, works during the germination and invasion of fungal spores, and has super strong systemic properties , High efficacy, safe to crops, long-lasting characteristics.

[0003] Thiophanate-methyl is a broad-spectrum fungicide. Its mechanism of action is to interfere with the formation of hammerheads in mycelial division, thereby affecting bacterial division, and has protective and therapeutic effects. [0...

Examples

Embodiment 1

[0051] Example 1 20% penconazole · thiophanate-methyl suspension

[0052] Penconazole 5g, thiophanate-methyl 15g, sodium dodecylbenzenesulfonate 5g, xanthan gum 0.5g, organic silicone 0.5g, ethylene glycol 3g, add water to 100g, thickener and antifreeze After the agent is mixed, the remaining components except the active ingredient are uniformly mixed through high-speed shearing, and the active ingredient is added, and ball milled in a ball mill for 2 to 3 hours, so that the particle size is all below 5 μm, that is, 20% penconazole. Thiophanate-methyl suspension.

Embodiment 2

[0053] Example 2 25% penconazole · thiophanate-methyl wettable powder

[0054] Add penconazole 5g, thiophanate-methyl 20g, sodium dodecylbenzenesulfonate 8g, pull open powder 5g, kaolin to 100g, mix the aforementioned ingredients, stir evenly in a stirring tank, and pass through a jet mill After mixing evenly, 25% penconazole·thiophanate-methyl wettable powder is prepared.

Embodiment 3

[0055] Example 3: 30% penconazole·thiophanate-methyl water-dispersible granules

[0056] Add penconazole 12g, thiophanate-methyl 18g, sodium dodecylbenzenesulfonate 8g, sodium lignosulfonate 4g, citric acid 5g, polyvinyl alcohol 0.5g, kaolin to 100g, and mix the aforementioned ingredients evenly , crushed with an ultra-fine jet mill, kneaded, and then added to a fluidized bed granulation dryer for granulation, drying, and sieving. After sampling and analysis, 60% penconazole·thiophanate-methyl water was obtained. Dispersible granules.

technical field

[0001] The invention belongs to the technical field of pesticide sterilization, and relates to a bactericidal composition. The active ingredients are composed of penconazole and thiophanate-methyl, which are used for disease prevention and treatment of fruit trees, melons and wheat, and are especially suitable for pear black star disease, watermelon powdery mildew and wheat powdery mildew. Background technique

[0002] Penconazole, a triazole highly active fungicide with systemic, therapeutic, protective, and eradicating effects, inhibits sterol demethylation, works during the germination and invasion of fungal spores, and has super strong systemic properties , High efficacy, safe to crops, long-lasting characteristics.

[0003] Thiophanate-methyl is a broad-spectrum fungicide. Its mechanism of action is to interfere with the formation of hammerheads in mycelial division, thereby affecting bacterial division, and has protective and therapeutic effects. [0...

Examples

Embodiment 1

[0051] Example 1 20% penconazole · thiophanate-methyl suspension

[0052] Penconazole 5g, thiophanate-methyl 15g, sodium dodecylbenzenesulfonate 5g, xanthan gum 0.5g, organic silicone 0.5g, ethylene glycol 3g, add water to 100g, thickener and antifreeze After the agent is mixed, the remaining components except the active ingredient are uniformly mixed through high-speed shearing, and the active ingredient is added, and ball milled in a ball mill for 2 to 3 hours, so that the particle size is all below 5 μm, that is, 20% penconazole. Thiophanate-methyl suspension.

Embodiment 2

[0053] Example 2 25% penconazole · thiophanate-methyl wettable powder

[0054] Add penconazole 5g, thiophanate-methyl 20g, sodium dodecylbenzenesulfonate 8g, pull open powder 5g, kaolin to 100g, mix the aforementioned ingredients, stir evenly in a stirring tank, and pass through a jet mill After mixing evenly, 25% penconazole·thiophanate-methyl wettable powder is prepared.

Embodiment 3

[0055] Example 3: 30% penconazole·thiophanate-methyl water-dispersible granules

[0056] Add penconazole 12g, thiophanate-methyl 18g, sodium dodecylbenzenesulfonate 8g, sodium lignosulfonate 4g, citric acid 5g, polyvinyl alcohol 0.5g, kaolin to 100g, and mix the aforementioned ingredients evenly , crushed with an ultra-fine jet mill, kneaded, and then added to a fluidized bed granulation dryer for granulation, drying, and sieving. After sampling and analysis, 60% penconazole·thiophanate-methyl water was obtained. Dispersible granules.

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