Polygonatum odoratum seed latest prices and detailed planting methods

Polygonatum odoratum, also known as Di Guan Zi, Wei Shen, Ling Dang Cai, etc., is a perennial herb of the genus Polygonatum in the Liliaceae family. It is native to southwestern China, China, but is widely distributed in the wild. Its rhizome is used as medicine and has effects such as nourishing yin and moistening dryness, clearing heat and relieving cough, and can also be used as a premium tonic food, delicacy and beverage. It is worth planting for the broad masses of farmers. Now let us take a look together at the seed prices and planting methods of Polygonatum odoratum!

How much is one jin of Polygonatum odoratum seeds?

The price of Polygonatum odoratum seeds is about 80 to 110 yuan per jin, but it varies depending on seed quality, variety, place of origin and market, etc. Wild Polygonatum odoratum mostly grows in cool, moist mountain sparse forests or thickets without standing water. It is cold-tolerant and tolerant of shade and moisture, and avoids direct strong light and windy conditions. It prefers deep soil rich in sand and humus. In production, underground rhizomes are mostly used for propagation. Generally, 400 to 600 jin of seed rhizomes are used per mu, and the dry yield per mu is about 1200 to 1500 jin.

Sowing methods for Polygonatum odoratum

1. Site selection and land preparation: For planting Polygonatum odoratum, it is advisable to choose slightly acidic sandy loam with deep soil layers, good drainage and a sunny aspect. Deep plow more than 30 cm, and at the same time apply 3000 to 4000 kg of farmyard manure per mu as base fertilizer. Break up the soil finely and rake it level, then make raised beds 1.3 cm wide.

2. Selection of seed rhizomes: When harvesting in autumn, select plump, yellow-white root buds grown in the current year to keep as seed. Dig, select and plant as you go. If weather changes prevent planting, the root buds must be spread out in a wind-protected, cool indoor place.

3. Seed germination: Before germination treatment of Polygonatum odoratum, first soak the seeds in cold water for 24 hours. After removing them and draining off the water, fully mix the seeds with wet sand at a 1:3 volume ratio for germination. Turn the seeds once every 10 days. After 30 full days, take them out and sow them in the field.

4. Planting method: Plant Polygonatum odoratum from early October to late October. Open furrows 15 cm deep on the bed at a row spacing of 30 cm. Arrange the seed rhizomes flat in the furrows at a plant spacing of about 15 cm, then cover with decomposed manure, and then cover with a layer of fine soil until level with the bed surface.

Planting methods for Polygonatum odoratum

1. Pre-emergence management: After sowing Polygonatum odoratum and before emergence, frequently check the bed covering to keep the bed soil constantly moist. Remove the covering at emergence. Frequently check the soil moisture status of the bed, water promptly in case of drought, and do drainage work well before the rainy season.

2. Thinning and intertillage: When Polygonatum odoratum seedlings are 8 to 10 cm tall, appropriately thin them if they are too dense, and at the same time do weed control well. Pull weeds as soon as they are seen, and never use a hoe to avoid damaging the rhizomes. When the soil is dry, pull them by hand. After rain or when the soil is too wet, it is not suitable to pull weeds.

3. Reasonable topdressing: Topdressing for Polygonatum odoratum should be determined according to the number of seedling years. If seedlings are transplanted after one year of raising, no topdressing is needed when sufficient base fertilizer has been applied. If seedlings are transplanted after two years of raising, after the aboveground plants of the one-year-old plants wither, apply a layer of decomposed farmyard manure at 2000 kg per mu in late autumn or early winter after freezing.

4. Irrigation and drainage: During the seedling growth period of Polygonatum odoratum, the seedlings are small and the root system is shallow in the soil, so it is not tolerant of drought. Water promptly when drought occurs. However, Polygonatum odoratum also most avoids water accumulation. Before the rainy season arrives, dredge the bed furrows to facilitate drainage.

5. Winter protection against cold: After the one-year-old seedlings of Polygonatum odoratum wither and before freezing, apply cold protection materials, covering with leaves, grass or manure soil, to ensure the seedlings overwinter safely.

Pest and disease control of Polygonatum odoratum

1. Leaf spot disease

[Damage] It damages leaves. First, oval or irregular lesions appear from the leaf tip, with purple-red edges and brown centers. The lesions gradually spread downward, causing the leaves to become pale white and die. It mostly begins in summer and autumn, and is more serious in the rainy season.

[Control] After harvest, promptly clean the field sanitation, collect dead branches and diseased residues and burn them centrally to eliminate overwintering pathogens in the field. Before onset and in the early stage of onset, spray 1:1:120 Bordeaux mixture, or 50% Tuzet 1000-times solution, once every 10 days, for 2 to 3 consecutive times.

2. Root rot

[Damage] In the early stage of rhizome onset, light brown round lesions appear, after which the diseased part rots, the tissue separates and sinks. In severe cases, the lesions connect into large patches, affecting the yield and quality of Polygonatum odoratum. In old cultivation areas of Guangdong, China, there is a trend of worsening year by year.

[Control] Implement crop rotation and strictly avoid continuous cropping. In the early stage of onset, promptly apply chemicals by root drenching. You may choose 50% carbendazim 500-times solution, or 20% Shuangxiaoling aqueous solution 200-times, or 50% Tuzet 800-times solution.

3. Gray leaf spot

[Damage] It damages leaves. In the early stage of diseased plants, slightly round lesions with purple edges and gray centers form on the leaf surface. At the same time, strip-shaped spots can form along the leaf veins. In severe cases, the entire leaf dies. It mostly occurs in June to July.

[Control] In the early stage of onset, spray chlorothalonil 500-times solution, once every 5 to 7 days, for 2 to 3 consecutive times.

4. Purple ring disease

[Damage] It damages leaves. Lesions occur on both sides of the leaves, round to oval, initially red, with the central part gradually turning gray to gray-brown, on which small black dots form, namely the pathogen's pycnidia.

[Control] Do field sanitation well. After seedlings emerge fully, use 70% thiophanate-methyl 800 to 1000-times solution, 50% mancozeb 600-times solution, or 50% Tuzet 800-times solution and other agents for spraying, once every 10 days, for 3 consecutive sprays.

5. White grubs

[Damage] Adult white grubs appear in mid-May and are active in the evening. They like to lay eggs on undecomposed stable manure, and the eggs are scattered in relatively moist soil.

[Control] In winter, clear weeds, deep plow the land, and destroy overwintering sites. When making beds, apply 25 to 30 kg of lime per mu on the soil surface and then turn it in to kill larvae. You may also use 90% trichlorfon crystal 1000 to 1500-times solution to pour and irrigate the soil around the roots.