Application of prothioconazole/carbendazim compound bactericide in controlling gibberellic disease

A technology for compounding fungicides and prothioconazole, which is applied in the directions of fungicides, applications, biocides, etc., can solve the problems such as the prevention and control of scab on wheat crops that are not involved in the scope of use, and can solve the problem of drug resistance and inhibit pathogenic bacteria. Synthetic toxin, low residual effect

Inactive Publication Date: 2015-05-13
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Chinese patent with the application number "201310635170.2" and the title of the invention "a fungicidal composition containing prothioconazole" discloses a prothioconazole-containing and multibacterial compound that can be used to prevent and control powdery mildew, sheath blight and other diseases. However, although this composition involves a variety of food crop diseases, its scope of application does not involve the control of scab of wheat crops. Currently, the combination of prothioconazole and carbendazim is used for the prevention and treatment of wheat crops. The head blight of similar crops has not been reported yet

Method used

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  • Application of prothioconazole/carbendazim compound bactericide in controlling gibberellic disease
  • Application of prothioconazole/carbendazim compound bactericide in controlling gibberellic disease
  • Application of prothioconazole/carbendazim compound bactericide in controlling gibberellic disease

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Experimental program
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Effect test

Embodiment 1

[0010] Example 1 Indoor Screening

[0011] The carbendazim-sensitive standard strain (PH-1) and the resistant (R33) head blight strain (obtained from the isolation of susceptible wheat) used in the test were all provided by the Food Inspection Institute of Jiangsu Academy of Agricultural Sciences;

[0012] The toxicity and synergistic coefficient of the combination of different proportions of carbendazim and prothioconazole against the standard strain (PH-1) and resistant (R33) head blight were determined indoors.

[0013] Experimental procedure: Dissolve prothioconazole and carbendazim in hydrochloric acid and methanol respectively to make a single dose with a concentration of 10,000 μg / mL, and then mix the single dose of carbendazim and the single dose of prothioconazole at a ratio of 1:1, 1:3, 1:5, 1:7, 1:9, 3:1, 5:1, 7:1, 9:1 mass ratio mixed to make a mixture, the mixture was added to potato dextrose agar culture carbendazim-sensitive (PH-1) and resistant (R33) strains o...

Embodiment 2

[0022] The efficacy test of embodiment 2 field control wheat scab

[0023] Test site: Jiangsu Academy of Agricultural Sciences;

[0024] Test time: May 2014

[0025] Test material: Sumai 188

[0026] The test set up control plots and test plots. After mixing prothioconazole and carbendazim at a mass ratio of 2:5, they were sprayed evenly on the wheat at the flowering stage, and the investigation results were obtained 20 days after use. The field test results are shown in Table 2. Both carbendazim and prothioconazole have good effects in the control of wheat scab. After the two are compounded and sprayed, the control effect can reach about 80%. The morbidity rate and disease index are effectively reduced, the control effect is improved, the dosage of medicine is reduced, and the cost of pesticide application is reduced.

[0027] Table 2 Effects of prothioconazole and carbendazim single agent and their mixture on the control of wheat head blight

[0028]

[0029] After th...

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Abstract

The invention discloses an application of a prothioconazole / carbendazim compound bactericide in controlling a gibberellic disease. A mass ratio of prothioconazole to carbendazim in the compound bactericide is 1:(0.1-5). According to the application, two bactericides with different mechanisms of action are mixed for use; on the basis that a good effect of carbendazim on the gibberellic disease of wheat crops is kept, carbendazim is compounded with a novel demethylation inhibitor, namely prothioconazole, so that the dosage of the bactericide is reduced; a control effect is improved; and the compound bactericide has a significant synergistic action on the disease of the wheat crops, can greatly inhibit toxin synthesis of pathogenic bacteria, improves grain quality, solves the problem of resistance caused by single use of carbendazim at the same time, is efficient, and low in toxicity and residue, reduces the dosage of a single bactericide and saves cost.

Description

technical field [0001] The invention belongs to the field of pesticide compounding, in particular to the application of a prothioconazole / carbendazim compound fungicide in the prevention and treatment of head blight. Background technique [0002] Wheat head blight is the most important disease that harms wheat production. It affects the yield and quality of wheat in my country for a long time, causing economic losses. At the same time, there are many kinds of mycotoxins in the susceptible wheat grains. Among these toxins, DON, 3ADON, 15ADON and ZEN is the most common and poses a serious threat to human and animal health. [0003] The molecular formula of carbendazim is: C 9 h 9 N 3 o 2 , the chemical name is N-(2-benzimidazolyl)-methyl carbamate, low toxicity and high efficiency, effective for ascomycetes and half-knowledge fungi, with protective and therapeutic effects, and its mechanism of action is to disturb the spindle in the mitosis of pathogenic bacteria Formation...

Claims

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Application Information

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IPC IPC(8): A01N47/18A01P3/00A01N43/653
Inventor仇剑波殷宪超俞明正徐剑宏史建荣
OwnerJIANGSU ACADEMY OF AGRICULTURAL SCIENCES