Diniconazole water dispersible granule and preparation method thereof

Abstract

The invention discloses a compound hexaconazole water-dispersible granule, which belongs to the fungicide technology in the field of crop protection. The composition of the invention includes: 20-800 parts of hexaconazole, 20-40 parts of a wetting agent, and 20-60 parts of a dispersant 30-80 parts of disintegrant, 10-50 parts of adsorbent, 10-40 parts of adhesive, 10-40 parts of stabilizer, and 50-500 parts of filler. The above ingredients are mixed in proportion, stirred uniformly, crushed to obtain mesh powder, uniformly mixed with mesh powder and adhesive, then granulated, dried and sieved to obtain hexaconazole water-dispersible granules. The invention overcomes the disadvantages of the existing formulations of hexaconazole, reduces the use cost of farmers and the pollution of the environment, and has the advantages of high content, fast disintegration, good dispersibility, good storage, transportation and stability during the use of the invention. Moreover, it has high activity, good efficacy, and safety. It is mainly used for apple leaf spot, pear scab, rice sheath blight, and grape powdery mildew.

Description

technical field

[0001] The invention relates to an agricultural fungicide, the active ingredient is hexaconazole, the dosage form is water-dispersible granule and the preparation method thereof. It is mainly used for the control of apple spot defoliation, pear scab, rice sheath blight and grape powdery mildew. Background technique

[0002] At present, there are many agricultural fungicides. Hexaconazole is one of them. It is an azole fungicide and a sterol demethylation inhibitor. It has broad-spectrum effects on diseases caused by fungi, especially Basidiomycota and Ascomycota. Protective and therapeutic effect, long-lasting effect, can quickly penetrate into the plant body after spraying, and is resistant to rain erosion. It is mainly used to prevent fungal diseases of crops. It has good safety, wide bactericidal spectrum and outstanding effect. It is the current fungal Products with better effect, higher activity, and less dosage in disease control, especially against ap...

Examples

Embodiment 1

[0023] Weigh 700 parts of hexaconazole original powder, 30 parts of wetting agent alkyl sulfate, 50 parts of dispersant fatty alcohol polyoxyethylene ether, 30 parts of disintegrating agent ammonium sulfate, 20 parts of adsorbent diatomaceous earth, stable 10 parts of disodium hydrogen phosphate as an agent, 140 parts of light calcium carbonate as a filler, mix them evenly, and pulverize them with a jet mill to obtain mother powder, mix the mother powder with 20 parts of binder polyvinyl alcohol, and then granulate , dried, and sieved to obtain hexaconazole water-dispersible granules. In practice, the control effect on the control of apple spot defoliation can reach 89.05-92.60%.

Embodiment 2

[0025] Weigh 730 parts of hexaconazole raw powder, 30 parts of wetting agent sodium alkylsulfonate, 40 parts of dispersing agent alkylphenol polyoxyethylene ether, 40 parts of disintegrating agent calcium chloride, 20 parts of adsorbent white carbon black , 25 parts of succinic acid as a stabilizer, 100 parts of kaolin as a filler, mix them evenly, and pulverize them with an airflow mill to obtain mother powder, mix the mother powder with 15 parts of binder gelatin evenly, then granulate, dry, and sieve To obtain hexaconazole water dispersible granules. In practice, the control effect on the control of pear scab is 89.98-94.23%.

Embodiment 3

[0027] Weigh 760 parts of hexaconazole raw powder, 20 parts of wetting agent alkylbenzene sulfonate, 30 parts of dispersant 602 agents, 35 parts of disintegrating agent calcium chloride, 10 parts of adsorbent lignin No. 45, stabilizer oxalic acid 25 parts, 100 parts of filler anhydrous sodium sulfate, mix it evenly, and pulverize it through a jet mill to obtain mother powder, mix the mother powder with 20 parts of binder polyethylene glycol, then granulate, dry, and sieve To obtain hexaconazole water dispersible granules. In practice, the control effect on controlling rice sheath blight is 92.3-95.6%.

technical field

[0001] The invention relates to an agricultural fungicide, the active ingredient is hexaconazole, the dosage form is water-dispersible granule and the preparation method thereof. It is mainly used for the control of apple spot defoliation, pear scab, rice sheath blight and grape powdery mildew. Background technique

[0002] At present, there are many agricultural fungicides. Hexaconazole is one of them. It is an azole fungicide and a sterol demethylation inhibitor. It has broad-spectrum effects on diseases caused by fungi, especially Basidiomycota and Ascomycota. Protective and therapeutic effect, long-lasting effect, can quickly penetrate into the plant body after spraying, and is resistant to rain erosion. It is mainly used to prevent fungal diseases of crops. It has good safety, wide bactericidal spectrum and outstanding effect. It is the current fungal Products with better effect, higher activity, and less dosage in disease control, especially against ap...

Examples

Embodiment 1

[0023] Weigh 700 parts of hexaconazole original powder, 30 parts of wetting agent alkyl sulfate, 50 parts of dispersant fatty alcohol polyoxyethylene ether, 30 parts of disintegrating agent ammonium sulfate, 20 parts of adsorbent diatomaceous earth, stable 10 parts of disodium hydrogen phosphate as an agent, 140 parts of light calcium carbonate as a filler, mix them evenly, and pulverize them with a jet mill to obtain mother powder, mix the mother powder with 20 parts of binder polyvinyl alcohol, and then granulate , dried, and sieved to obtain hexaconazole water-dispersible granules. In practice, the control effect on the control of apple spot defoliation can reach 89.05-92.60%.

Embodiment 2

[0025] Weigh 730 parts of hexaconazole raw powder, 30 parts of wetting agent sodium alkylsulfonate, 40 parts of dispersing agent alkylphenol polyoxyethylene ether, 40 parts of disintegrating agent calcium chloride, 20 parts of adsorbent white carbon black , 25 parts of succinic acid as a stabilizer, 100 parts of kaolin as a filler, mix them evenly, and pulverize them with an airflow mill to obtain mother powder, mix the mother powder with 15 parts of binder gelatin evenly, then granulate, dry, and sieve To obtain hexaconazole water dispersible granules. In practice, the control effect on the control of pear scab is 89.98-94.23%.

Embodiment 3

[0027] Weigh 760 parts of hexaconazole raw powder, 20 parts of wetting agent alkylbenzene sulfonate, 30 parts of dispersant 602 agents, 35 parts of disintegrating agent calcium chloride, 10 parts of adsorbent lignin No. 45, stabilizer oxalic acid 25 parts, 100 parts of filler anhydrous sodium sulfate, mix it evenly, and pulverize it through a jet mill to obtain mother powder, mix the mother powder with 20 parts of binder polyethylene glycol, then granulate, dry, and sieve To obtain hexaconazole water dispersible granules. In practice, the control effect on controlling rice sheath blight is 92.3-95.6%.