Composition comprising polygonum cuspidatum extract

Abstract

The invention relates to a composition comprising a polygonum cuspidatum extract. The composition is an antibacterial yield-increasing composition with an active component A and an active component B. The active component A is the polygonum cuspidatum extract. The active component B is selected from any one compound selected from bacillus laterosporus and bacillus subtilis. The composition provided by the invention has relatively high activity against various diseases on various crops, and has a significant synergistic effect. With the composition, a bactericidal spectrum is expanded, and effective fertilizer absorption of the crops is improved. The composition assists in the growth of crop inferior parts, and assists in regulating crop water balance. Therefore, with the composition, crop metabolic system can be activated, crop cell growth can be promoted, and crop root activity can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and relates to the application of a composition containing Polygonum cuspidatum extract on crops. technical background [0002] Polygonum cuspidatum extract mainly contains emodin and emodin methyl ether, which is in a viscous state and is generally easy to make liquid preparations. However, liquid preparations usually contain organic solvents and are prone to phytotoxicity, so they can be used to prevent and control cucumber powdery mildew. [0003] Brevibacillus lateralsporosa: In the lag phase, the Bacillus brevis is Gram-negative, and the cells are slender and rod-shaped; in the logarithmic growth phase, it is Gram-positive, and the cells are short and thick rods shape; in the stationary phase, Gram staining turns negative again, the bacteria become elongated rod-shaped, oval-shaped spores can also be observed occasionally; do not produce gas from carbohydrates; do not hydrolyze starch; fa...

AI Technical Summary

Problems solved by technology

After research by the inventors, it was found that the combination of Polygonum cuspidatum extract, Brevibacillus lateralosporus and Bacillus subtilis has a good synergistic effect within a certain range, which can improve the disease-resistant immunity of crops and enhance The activity of the root system, so as to achieve the purpose of increasing production, and the compounding of the extract of Polygonum cuspidatum with Brevibacillus spp. and Bacillus subtilis has not been reported at home and abroad.

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