Emulsion in water containing metconazole and tebuconazole

Abstract

The invention discloses an emulsion in water containing metconazole and tebuconazole, and belongs to the technical field of blended pesticides. The emulsion in water is prepared by compounding the metconazole and the tebuconazole, and is a novel dosage form in which water is taken as a medium instead of an organic solvent in missible oil. When the emulsion in water is used for preventing and treating wheat scab, the using dosages of the metconazole and the tebuconazole as effective components can be lowered effectively. Meanwhile, compared with the metconazole and the tebuconazole in a single dosage, the emulsion in water has the advantages that the sterilizing effect is improved effectively, the cost is lowered, residues of pesticides on crops are reduced, and environmental pollution is lowered. The emulsion in water is safe to human beings and livestock, has high environmental compatibility, and is free from pesticide resistance.

Description

technical field

[0001] The invention belongs to the technical field of compound pesticides, and in particular relates to the preparation technology of compound fungicides for preventing and controlling resistant diseases. Background technique

[0002] Wheat scab is an important fungal disease that threatens wheat production in my country, seriously affecting the yield and quality of wheat. Wheat head blight, in particular, is caused by Fusarium sp., which not only causes devastating yield losses, but also produces large amounts of toxins such as deoxynivalenol in infected kernels. Affects food security and human and animal health. Since my country has always used carbendazim-based benzimidazole fungicides to prevent and control wheat scab, due to the increase in the service life and dosage, wheat scab has been controlled by carbendazim-based benzimidazole fungicides. Imidazole fungicides produce resistance, but at present, the main agents used for the control of wheat head ...

Examples

Embodiment Construction

[0020] One, the preparation method of 40% metconazole tebuconazole aqueous emulsion:

[0021] Weigh 8kg of metconazole and 32kg of tebuconazole respectively, dissolve them with 5kg of solvent oil and 2kg of N-methylpyrrolidone, and dissolve 3.5kg of polyoxyethylene fatty acid ester and 1kg of tristyrene phenol polyoxygen Vinyl ether phosphate is added to the dissolved original drug solution, stirred evenly, and used as the oil phase for later use. Add 2 kg of alkylphenyl polyglycol ether to 43.5 kg of water, stir and disperse to prepare an aqueous dispersion, and then add 3 kg of ethylene glycol to prepare a water phase for later use. In the stirring state (over 300-400r / min), slowly add the oil phase to the water phase, continue stirring for 20 minutes after emulsification, and then, high-speed shearing (5000-6000r / min) for 10 minutes to obtain 40% metconazole. Tebuconazole aqueous emulsion 100kg.

[0022] 2. Field application:

[0023] 1. Application method and dosage:

...

technical field

[0001] The invention belongs to the technical field of compound pesticides, and in particular relates to the preparation technology of compound fungicides for preventing and controlling resistant diseases. Background technique

[0002] Wheat scab is an important fungal disease that threatens wheat production in my country, seriously affecting the yield and quality of wheat. Wheat head blight, in particular, is caused by Fusarium sp., which not only causes devastating yield losses, but also produces large amounts of toxins such as deoxynivalenol in infected kernels. Affects food security and human and animal health. Since my country has always used carbendazim-based benzimidazole fungicides to prevent and control wheat scab, due to the increase in the service life and dosage, wheat scab has been controlled by carbendazim-based benzimidazole fungicides. Imidazole fungicides produce resistance, but at present, the main agents used for the control of wheat head ...

Examples

Embodiment Construction

[0020] One, the preparation method of 40% metconazole tebuconazole aqueous emulsion:

[0021] Weigh 8kg of metconazole and 32kg of tebuconazole respectively, dissolve them with 5kg of solvent oil and 2kg of N-methylpyrrolidone, and dissolve 3.5kg of polyoxyethylene fatty acid ester and 1kg of tristyrene phenol polyoxygen Vinyl ether phosphate is added to the dissolved original drug solution, stirred evenly, and used as the oil phase for later use. Add 2 kg of alkylphenyl polyglycol ether to 43.5 kg of water, stir and disperse to prepare an aqueous dispersion, and then add 3 kg of ethylene glycol to prepare a water phase for later use. In the stirring state (over 300-400r / min), slowly add the oil phase to the water phase, continue stirring for 20 minutes after emulsification, and then, high-speed shearing (5000-6000r / min) for 10 minutes to obtain 40% metconazole. Tebuconazole aqueous emulsion 100kg.

[0022] 2. Field application:

[0023] 1. Application method and dosage:

...