Plant-sourced pesticide for controlling tomato canker disease and preparation method thereof

Abstract

The invention provides a plant-sourced pesticide for controlling a tomato canker disease and a preparation method thereof. The preparation method comprises the following steps: taking matteuccia struthiopteris powder as a raw material, performing reflux extraction by utilizing ethanol, and concentrating an extraction solution into a matteuccia struthiopteris extract; mixing with ethanol, tween-80 and water, and packaging to obtain a finished product. After the matteuccia struthiopteris plant-sourced pesticide is used for spraying diseased plants, a relatively good control effect can be achieved. Results of performance measurement on the plant-sourced pesticide show that various indexes reach qualified standards; pharmacodynamic tests show that the matteuccia struthiopteris plant-sourced pesticide can effectively inhibit tomato canker bacteria and is non-toxic to tomatoes. The preparation method is simple in process; the plant-sourced pesticide is low in cost and good in product stability, does not pollute soil, underground water resources and agricultural products, and is an ideal novel plant-sourced pesticide.

Description

technical field [0001] The invention relates to a botanical pesticide, in particular to a botanical pesticide for preventing and treating tomato canker and a preparation method thereof. Background technique [0002] Tomato canker is a disease of the vascular system caused by Corynebacterium michiganii subspecies. Tomato canker is one of the most destructive diseases in tomato planting and growth, which has caused huge economic losses. When tomato plants are infected with tomato canker, the typical symptoms are wilting of leaves on one side of the diseased plants and "bird's eye spots" on the fruit. In the late stage of infection, streaks appear on the stems, become hollow, and the infected parts become thicker. Finally, the whole plant withers and dies. [0003] At present, copper preparations and streptomycin chemical pesticides are mainly used for drug control of tomato canker. However, due to the unreasonable use of chemical pesticides and the inherent shortcomings of ...

AI Technical Summary

Problems solved by technology

However, due to the unreasonable use of chemical pesticides and the inherent shortcomings of chemical fungicides, the use of chemical pesticides has caused problems such as environmental pollution, high toxicity, and easy to produce bacterial resistance.

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