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Mixed medicament and application thereof to prevention and treatment of bipolaris maydis

A technology of corn leaf spot and corn leaf spot bacteria, which is applied in the field of pesticides, can solve the problems of unfavorable environmental sustainable development, disease resistance, and increased dosage, so as to reduce the dosage and use cost, and delay drug resistance , the effect of solving the problem of medication

Active Publication Date: 2016-06-08
INST OF PLANT PROTECTION FAAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, whether it is propiconazole, iprodione, or other high-efficiency fungicides, long-term use alone will easily cause disease resistance, leading to problems such as reduced control effect, shortened duration of effect, and increased dosage, which is not conducive to environmental sustainability. sustainable development

Method used

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  • Mixed medicament and application thereof to prevention and treatment of bipolaris maydis
  • Mixed medicament and application thereof to prevention and treatment of bipolaris maydis
  • Mixed medicament and application thereof to prevention and treatment of bipolaris maydis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1, the bactericidal effect of propiconazole and iprodione mixed medicament

[0019] 1. Preparation of medicine

[0020] The original drug of propiconazole (95%) used in this example was purchased from Zhejiang Shijia Technology Co., Ltd., and the original drug of iprodione (97.5%) was purchased from Jiangsu Huifeng Agrochemical Co., Ltd.

[0021] Dissolve the original drug of propiconazole and iprodione respectively in dimethyl sulfoxide to prepare 1.5625×10 5 μg / mL mother liquor; then mix propiconazole mother liquor and iprodione mother liquor according to volume ratio 1:9, 2:8, 3:7, 4:6, 5:5, 6:4, 7:3, 8: 2 and 9:1 in 9 different ratios to prepare a mixed mother liquor, and then use 0.1% Tween 80 to dilute each mixed mother liquor into a series of mixed preparations. On the basis of the preliminary experiment, each mixed The concentrations of the formulations were set at 0, 0.002, 0.01, 0.05, 0.25, 1.25, 6.25 and 31.25 μg / mL.

[0022] 2. The antibacteria...

Embodiment 2

[0036] Embodiment two, mixed medicament is to the control test of small spot of corn

[0037] 1. Control test of mixed pesticides on corn seedling stage

[0038] The experiment was carried out in Fuzhou City, Fujian Province, and the corn variety was Top Grade (Fujian Nongfeng Agricultural Development Co., Ltd.).

[0039]Pesticide 25% propiconazole EC, produced by Syngenta Crop Protection Co., Ltd., Switzerland, pesticide registration number PD28-87; 50% iprodione SC, produced by Bayer Crop Science Co., Ltd., Germany, pesticide registration number PD20070395; 80% substitute Mancozeb WP, produced by Dow AgroSciences, Pesticide Registration No. PD220-97; 12.5% ​​Diniconazole WDG, produced by Beijing Ruipu Biotechnology Co., Ltd., Pesticide Registration No. LS20082872; 40% Isobacterium Fluazinam SC , produced by Jiangxi Spring Agrochemical Co., Ltd., pesticide registration number LS20140156; 30% benzopropiconazole EC, produced by Anhui Jixi Nonghua Biotechnology Co., Ltd., pesti...

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Abstract

The invention belongs to the technical field of pesticides and discloses a mixed medicament and application thereof to prevention and treatment of bipolaris maydis. The mixed medicament comprises active ingredients including propiconazole and iprodione in a weight ratio of 6:4. By mixing of bactericides with different function mechanisms, the novel medicament for prevention and treatment of bipolaris maydis is obtained and conducive to delaying of field drug resistance, is capable of improving prevention and treatment effects and reducing medicament consumption and utilization cost and has potential social, economic and ecological benefits.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a mixed agent and its application in preventing and treating corn spot disease. Background technique [0002] Corn is not only an important food crop, but also a raw material in industry and medicine and the main source of feed. In particular, fresh corn has been vigorously promoted as the main economic crop in many provinces and cities due to its high nutritional value, good economic benefits and huge market development potential. In the process of corn production, corn diseases are the main factors restricting the yield and quality of corn. Maize small spot caused by Bipolarismaydis (Nisikadoet Miyake) Shoem is a worldwide fungal disease of maize leaves. In recent years, with the development of the industrialization of fresh corn planting, the renewal of corn varieties and the transformation of the cultivation system, the occurrence of small spot of corn has be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/38A01N43/653A01P3/00
CPCA01N43/653A01N47/38A01N2300/00
Inventor 代玉立杨秀娟甘林陈福如阮宏椿石妞妞杜宜新
Owner INST OF PLANT PROTECTION FAAS
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