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Osthole——Used In Insecticide Field
Aug 25, 2017

Osthole/ Cnidium is a plant-derived pesticides, with specific, natural characteristics, only a specific role in the biological, in nature of tested by osthole hplc can quickly break down. Fructus Cnidii Extract included the main ingredients osthol powder, osthol is widely used in insecticide. effects of osthol benefits have many sides, osthol fungicide is the main side in the agricultural field.


1. Function of Osthol:

1). Osthole present invention and the antibiotic complex formulations, obvious synergy, antimicrobial activity,for treatment of rice sheath blight, rice blast or wheat scab pesticide application;

Osthole and Jinggangmycin complex, for rice Rhizoctonia and Fusarium are better;

Osthole and Kasugamycin complex, better results for rice blast; osthole and streptomycin complex, the effect of the rice sheath blight Good.

Conclusion: a single dose of streptomycin sulfate poor control of rice sheath blight, pure osthole control Rhizoctonia solani effect is not ideal, but Jinggangmycin 100 lag / mL of anti-efficiency can reach 82.35%, osthole Two different proportions and streptomycin Mixture 90 pg / mL equivalent control effect 80.11-86.24%.

2). Osthole Regulates Inflammatory Mediator Expression through Modulating NF-KB, Mitogen-Activated Protein Kinases, Protein Kinase C, and Reactive Oxygen Species.

To sum up the four points that osthole, compared with the general high toxicity, high residual chemical pesticides, has a significant difference, is very green, environmentally friendly.


2. Application of Osthol:


a. Bacteriostasis

Agents, which include the active ingredient osthole and agricultural antibiotics in a weight ratio of 1~6: 1-8; said Jinggangmycin agricultural antibiotic kasugamycin or streptomycin. Wherein, preferably the weight ratio of 1 ~ 4: 1 to 6.

1.1.1, Osthole and Jinggangmycin complex: ( betterfor rice Rhizoctonia and Fusarium ) 

The ratio is preferably between osthole and Jinggangmycin is 6: l or 4 : 1.

1.1.2, Osthole and Kasugamycin complex: (better results for rice blast ) 

the ratio osthole and between Kasugamycin is 1 ~ 4: 1 to 4, preferably 4: 1.

1.1.3, osthole and streptomycin complex, (good for rice sheath blight ) osthole


The ratio of between osthole and streptomycin is 1 to 2: 1 to 8.

Among them, as EC formulations of the present invention and agricultural osthole antibiotic compound comprises the following ingredients and content:

Active ingredients: 2-18%

Emulsifier: 5-25%

Penetrant: 1-15%

Solvent: 40-92%.

Emulsifiers or Nongru Nongru 0203 # 500, penetrants as OT-99, or a silicone penetrant chlorthalidone (ethoxy-modified trisiloxane, etc); the solvent is NN, dimethylformamide, ethanol or methanol.

Preparation for the EC:

Formulated the first part of the solvent used to dissolve Jinggangmycin, stirring until completely dissolved after osthole added. Was stirred until completely dissolved. Then the emulsifier is added and stir, then add penetrant. Stirring was continued for l hour, depending how much the missing weight or volume dispensed with methanol made up to weight (or volume). Stirring was continued for l hour.

Osthole present invention and the antibiotic complex formulations for the preparation of prevention and treatment of rice sheath blight, rice blast or wheat scab pesticide application; wherein osthole and Jinggangmycin complex, for rice Rhizoctonia and Fusarium are better; osthole and Kasugamycin complex, better results for rice blast; osthole and streptomycin complex, the effect of the rice sheath blight.

Osthole present invention and the antibiotic complex formulation, obvious synergy, antimicrobial activity

Strong, relatively with less, for prevention and treatment of rice sheath blight, rice blast or wheat scab had a marked effect.

paddy rice sheath blight prevention test results shown in Table 8.

Table 8 osthole and streptomycin two control sheath blight Rice Field Tests compounded agents


Drug Administration Control Effect Concentration (%)

() Ig / mL) l Repeat Repeat 2 Repeat 3 Average

Osthol (A) 60 51.37 47.02 55.83 51.41

Streptomycin sulfate (B) 120 23.42 26.13 24.57 24.71

A: B = 2: 1 90 75.83 81.06 83.45 80.11

A: B = l: 2 90 85.67 82.93 90.12 86.24

Jinggangmycin 100 84.22 72.54 90.30 82.35

Conclusion: a single dose of streptomycin sulfate poor control of rice sheath blight, pure osthole control Rhizoctonia solani effect is not ideal, but Jinggangmycin 100 lag / mL of anti-efficiency can reach 82.35%, osthole Two different proportions and streptomycin Mixture 90 pg / mL equivalent control effect 80.11-86.24%.


b. Resistant to powdery mildew

Osthole Regulates Inflammatory Mediator Expression through Modulating NF-KB, Mitogen-Activated Protein Kinases, Protein Kinase C, and Reactive Oxygen Species


Where Are You Buying The High Quality Osthole?

Xi'an Natural Field Bio-Technique Co.,Ltd. as osthol powder seller and manufacture, which is the professional Manufacturer of Herbal Extract Since 2005. And attend the CPHI, Vitafoods and API Exhibition from 2008. Osthole is the one of strong products. If you need this products, please contact us and visit their website www.nfnutra.com or send an inquiry to info@natural-field.com at any time.