polygonatum black spot

Rhizoma Polygonatum (scientific name: Polygonatum sibiricum), also known as: chicken head Polygonatum, yellow chicken cabbage, pencil dish, claw ginseng, tiger ginger, chicken claw ginseng. It is a plant of the genus Polygonatum, the rhizome is transverse, cylindrical and nodules are dilated. Verticillate, sessile. Medicinal plants have the effect of tonifying spleen, moisturizing lung and promoting fluid.

Rhizoma Polygonatum has strong adaptability, can endure cold winter, can be planted in the south, likes shade and humidity, has strong cold tolerance, grows poorly in dry areas, grows well in humid and shady environment, has strong selectivity in growth environment, and is born in fertile soil, sufficient surface moisture, upper forest edge, grass or open areas under the forest, and should not be planted in areas with heavy clay, thin soil, drought, stagnant water, low-lying and many stones.

The seeds of Polygonatum polygonatum are bead-shaped, hard, navel is obvious, dark brown, and the weight of a thousand seeds is about 33g. The germination rate of seeds stored dry at room temperature is low, and the germination rate of seeds stored in low temperature sand storage and frozen sand storage is high, which is beneficial to seed embryo development, break seed dormancy, shorten germination time, and germinate neatly, and the suitable germination temperature is 25 mi 27 degrees Celsius. The germination rate of dry storage at room temperature is 62%, and the germination rate of wet sand mixed with wet sand is as high as 96%. Therefore, Polygonatum seeds must be treated before they can be used for sowing.

Polygonatum black spot

What is black spot?

Black spot is also called blackspot. Common diseases of aconite, Aster, cactus, emerald, elm, red lotus, cherry, yellow flower, holly, delphinium, wood resveratrol, orchid, primrose, raspberry, rose and sugar beet. It is caused by many kinds of fungi of Pseudomonas, Asterina, Asterinella, Asteroma, Diplotheca, Glomerella, Gnomonia, Microthyriella, Placosphaeria and Stigmea. Infection occurs in the wet season, with round or irregular black leaf spots, sometimes in petioles, stems and flowers.

Symptoms of Rhizoma Polygonatum black spot:

Yellow essence black spot disease is characterized by irregular yellow-brown spots on the leaves from the leaf tip, so that there is a purplish red edge at the junction of the healthy part, and then the disease spot spreads downward, and the leaves are withered and yellow.

Prevention and treatment of Rhizoma Polygonatum black spot:

Spray with 1000 times of methamphetamine, once every 7 to 10 days, for 2 times in a row.