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High-efficiency novel synergistic composition for preventing and treating three new major diseases of rice

A diseased and efficient technology, applied in the field of agricultural science and technology, can solve the problems of unreported and unregistered biological activity of rice sheath blight, and achieve the effect of delaying the drug resistance of the bacteria, achieving significant control effects and reducing labor intensity.

Inactive Publication Date: 2020-07-28
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the biological activity of the synergistic combination of propiconazole and trifloxystrobin against rice sheath blight, rice blast fungus and rice smut fungus, and no corresponding combination agent has been registered

Method used

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  • High-efficiency novel synergistic composition for preventing and treating three new major diseases of rice
  • High-efficiency novel synergistic composition for preventing and treating three new major diseases of rice
  • High-efficiency novel synergistic composition for preventing and treating three new major diseases of rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Example 1: Dissolve propiconazole and trifloxystrobin in a mixed solvent of isopropanol and ethanol, and then mix with additives to form a uniform and transparent oil phase; add pure water to the oil phase while stirring, and first form an oil-in-oil phase For water-based emulsion, continue to stir to make it phase inversion into oil-in-water microemulsion, and the appearance is a uniform and transparent liquid. The formulation of 30% propiconazole · trifloxystrobin microemulsion is as follows: 5% propiconazole, 25% trifloxystrobin, 20% ethanol, 5% isopropanol, 4.5% 500# (calcium dodecylbenzenesulfonate) , 6% 601 (tristyrylphenol polyoxyethylene ether), 4.5% NP-10P (nonylphenol polyoxyethylene ether phosphate), purified water to make up.

[0054] In June 2019, in the experimental demonstration area of ​​Haohuahong Town, Huishui County, the soil fertility of the experimental site is medium and uniform, the terrain is flat, and the irrigation conditions are good. The wate...

Embodiment 2

[0067] In order to understand the control effect of propiconazole-trifloxystrobin tank mix on rice sheath blight, panicle blast and rice false smut, a field test was conducted in the experimental demonstration area of ​​Haohuahong Town, Huishui County in June 2019, and the test was carried out on rice heading To the grouting period, use the laboratory propiconazole and trifloxystrobin to carry out the tank-mixing spray test.

[0068] The results showed (Table 7-9), the combination of propiconazole and trifloxystrobin was sprayed according to the active ingredient 12g / mu and functional additives NF-100, GY-T1602, GY-S903, and the effect on rice koji was 21 days after the medicine. The control effects on rice sheath blight were 83.46%, 84.77%, and 85.21%, respectively, and the control effects on rice sheath blight were 81.31%, 87.59%, and 89.42%, and the control effects on rice blast were 70.30%, 60.70%, and 67.50%, respectively. %; reduce the dosage by 20%, the combination of p...

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Abstract

The invention discloses a high-efficiency novel synergistic composition for preventing and treating three new major diseases of rice. Main components of the high-efficiency novel synergistic composition comprise propiconazole and trifloxystrobin. According to the invention, the propiconazole and trifloxystrobin are combined according to an effective ratio, so that good inhibition effects on the hypha growth of rhizoctonia solani, ustilaginoidea virens and magnaporthe oryzae are achieved; wherein the ratio of propiconazole to trifloxystrobin is 1:1. 5, the EC50 values of the composition on rhizoctonia solani, magnaporthe oryzae and ustilaginoidea virens are 0.23 mg / L, 0.03 mg / L and 0.02 mg / L respectively and the co-toxicity coefficients of the compounds are 396.00, 160.13 and 149.85. The bactericidal composition has obvious synergistic effect, the field control effects are respectively up to 86.55%, 86.99% and 85.86%, the control effect is obviously higher than that of a single agent, the dosage of pesticides can be effectively reduced, various diseases can be treated, the drug resistance of germs can be delayed, the labor intensity can be effectively reduced, and the production cost can be saved.

Description

Technical field [0001] The invention belongs to the field of agricultural science and technology, and particularly relates to a new and efficient synergistic combination for preventing and treating three new major diseases of rice. Background technique [0002] Rice smut disease caused by Ustilaginoidea virens (Cooke) Takahashi has gradually worsened in recent years, seriously affecting the yield and quality of rice. It has risen from a secondary disease to one of the major fungal diseases of rice, and is related to the disease caused by rice. Rice blast caused by Magnaporthe oryzae and rice sheath blight caused by Rhizoctonia solani Kühn are listed as the three new major diseases of rice and are the main diseases of rice worldwide. Globally, rice yield losses are extremely high every year due to the occurrence of rice smut, rice blast and sheath blight. At present, the main measure to prevent and control these diseases is still chemical control. The long-term, single and l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/653A01N37/50A01P3/00
CPCA01N37/50A01N43/653
Inventor 李荣玉刘世江吴小毛周艾艾廖逊李明丁怡赵琪君赵文晋尹显慧胡安龙
Owner GUIZHOU UNIV
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