2 results about "Polygonum perfoliatum" patented technology

This invention discloses the application of *Polygonum aviculare* extract in the prevention and control of bacterial leaf spot in peach. The invention utilizes ultrasound-assisted extraction to extract the active components of *Polygonum aviculare*. Antibacterial experiments demonstrated that the extract exhibits good antibacterial activity against the pathogen of peach bacterial leaf spot (*Xanthomonas arboricola* pv. pruni, Xap), with a minimum inhibitory concentration (MIC) identical to that of the positive control drug oxytetracycline, both at 0.125 mg / mL. The antibacterial activity of *Polygonum aviculare* extract is comparable to that of oxytetracycline, making it a potential agent for the prevention and control of peach bacterial leaf spot.

This invention relates to the field of ecological slug control technology and discloses an adjustable-release rate vertical pokeweed extract ecological slug control module, including a support plate. A storage cylinder is fixedly connected to the top of the support plate. A trapezoidal lead screw is threadedly connected to the top of the storage cylinder. A rotating handle is fixedly connected to the top of the trapezoidal lead screw. A mounting block is fixedly connected to the bottom of the trapezoidal lead screw. A frustum-shaped block is fixedly connected to the bottom of the mounting block. A cylinder is fixedly connected to the top of the mounting block. A hollow shaft is rotatably connected to the top of the storage cylinder. The outer wall of the trapezoidal lead screw is disposed within the hollow shaft, and a groove is formed at the bottom of the hollow shaft. The outer wall of the cylinder is slidably connected within the groove. By rotating the rotating handle, the trapezoidal lead screw rotates, moving up and down along the top of the storage cylinder, causing the mounting block and the frustum-shaped block to move synchronously. The gap between the discharge pipe and the frustum-shaped block changes accordingly, thereby controlling the release rate of the vertical pokeweed extract and improving the slug control effect.