Efficient Cultivation Techniques for Golden Variegated Star Jasmine and Main Pest and Disease Control Methods
How do you propagate golden variegated star jasmine? How do you grow golden variegated star jasmine? Recently, many flower growers have asked about the cultivation techniques for golden variegated star jasmine, so below the Huinong Network editor has compiled the propagation methods and pest and disease control cultivation techniques for golden variegated star jasmine.
1 Cutting Orchard
1.1 Land Preparation and Soil Improvement
Choose loose-textured, fertile, slightly acidic, neutral and slightly alkaline soil. For clay soil and soil with insufficient fertility, soil improvement should be carried out, with sufficient base fertilizer applied, 3000 kg of decomposed organic fertilizer per mu, plus 50 kg of phosphate fertilizer. To prevent underground pests, 2 kg of the insecticide carbofuran can be applied per mu. The first ploughing uses deep ploughing, with a depth of more than 25 cm, then rake finely once; the second ploughing requires a level bed surface.
1.2 Ditching and Bed Making
The field is low in the center and high on both sides. Open a central ditch in the middle of the field, connected with the side ditches, 40-60 cm deep and 50-60 cm wide. Bed making: the bed surface is 110 cm wide, the soil clods on the bed surface are finely broken, and the middle of the bed surface is slightly higher with both sides slightly lower. Open a walkway between each seedbed, 25 cm deep and 40 cm wide, so that the ditches are connected and drainage flows smoothly.
1.3 Pruning and Transplanting
Before transplanting, prune the aboveground part, keeping a height of 15 cm, to promote new shoots from the base. The transplanting time is February to March, using half-gallon container seedlings for transplanting. Plant 3 plants across the seedbed, with a plant spacing of 35 cm and a row spacing of 40 cm, 3000 plants per mu. The transplanting depth should be moderate, slightly deeper than the original root-collar depth of the plant, then cover the base of the seedling with fine soil and press lightly to firm.
1.4 Post-Planting Management
On the day of transplanting, water thoroughly to settle the roots. If there are consecutive sunny days, water on the 4th day after transplanting, and thereafter water once every 10 days; if there is rain, drain promptly, and carry out full-light management to promote lignification. Begin fertilizing 15 days after transplanting; apply urea in April, and apply compound fertilizer from May to September, once every 15 days, at 15 kg per mu. No more topdressing after October. In December or January of the following year, apply decomposed organic fertilizer once, at 1500 kg per mu, by opening a shallow ditch between the plants and burying it. On sunny days after rain, loosen the soil and weed promptly together with fertilizing, to prevent the soil surface from crusting.
1.5 Disease Control
Brown spot disease often occurs from April to July, damaging leaves and causing lesions; the lesions have a gray mold layer. When there are many lesions on the leaves, they will drop prematurely by autumn. Control methods: remove diseased leaves and burn them in a centralized manner; apply more organic fertilizer to strengthen tree vigor, open ditches for drainage in time, and improve disease resistance; thin the seedlings appropriately to increase light penetration; at the early stage of the disease, spray 75% chlorothalonil wettable powder 600-700 times dilution, or 50% carbendazim wettable powder 500 times dilution, or 50% sulfur suspension concentrate 800 times dilution, once a week, for 2-3 consecutive sprays.
1.6 Stumping for Rejuvenation
With repeated cutting of spikes year after year, the mother plants age and the vigor of the spike shoots declines. To enhance the vigor of the spike shoots, mother plants over 6 years old must undergo heavy pruning. In February of that year, keep the mother plant height at 10 cm and carry out stumping. Then loosen the soil and earth up in time, and apply decomposed organic fertilizer once, at 2000 kg per mu, to promote adventitious buds from the roots and produce clustered plants, achieving the purpose of rejuvenation.
2 Propagation and Seedling Raising
2.1 Cutting Spike Shoots
In early June, cut current-year semi-lignified branches in the morning. Branch cutting and spike shoots need to be cut on the same day, and the length of the spike shoots is 3.5 cm.
2.2 Substrate Formula
Peat : vermiculite : perlite : yellow subsoil = 6 : 2 : 1 : 1 (volume ratio), dry bulk density 0.30, total porosity 54.89%, macroporosity 15.25%, microporosity 39.64%, maximum water-holding rate 1.82. pH 5.43, EC 0.51 mS/cm, total nitrogen 1.99%, total phosphorus 323.13 mg/kg, total potassium 8360.77 mg/kg, calcium 1548.18 mg/kg, magnesium 1659.28 mg/kg, copper 16.77 mg/kg, zinc 54.92 mg/kg, boron 180.88 mg/kg, iron 5256.12 mg/kg, manganese 170.39 mg/kg, molybdenum 3.39 mg/kg, aluminum 13633.50 mg/kg, lead 14.23 mg/kg, sodium 2266.71 mg/kg, nickel 26.87 mg/kg, sulfur 1358.16 mg/kg.
2.3 Disinfection and Plant Rooting Promoter
The substrate in the mesh bags or plug trays should be watered thoroughly one day in advance. Use mesh bag trays or 128-cell plug trays. The seedbed is 100 cm wide, with 3 plug trays placed lengthwise, 6 per square meter, 432 spike shoots. Lay ground cloth on the bed surface, disinfect with 600 times dilution of potassium permanganate, and cover with film for 24 hours. The plant rooting promoter used is naphthaleneacetic acid 5 + GA4 gibberellin 2 + ABT No. 6 rooting powder 3, at a concentration of 500 ppm, with a quick dip of 2 seconds. Insert 1 spike shoot into each mesh bag or each cell of the plug tray, with a cutting depth of 2 cm, inserting upright. After cutting is completed, water thoroughly, and after the leaf surface dries, spray the leaf surface with 1000 times dilution of carbendazim to prevent brown spot disease.
2.4 Post-Cutting Management
On the day of cutting, immediately water thoroughly after each seedbed is finished, and after the moisture on the leaf surface evaporates, immediately spray chemicals to disinfect and prevent disease, then build a small arch shed, cover it with film, and seal all around to keep the relative air humidity inside the shed above 95%. Set up shade netting above the seedbed in advance, covering 1 layer in June and 2 layers from July to August. Hang a rod-shaped thermometer inside the small arch shed. When the air temperature inside the small arch shed reaches above 38°C, take misting measures to cool it down, especially during high temperatures on sunny days, from 10 a.m. to 4 p.m., mist once every half hour to bring it below 38°C. Check the substrate moisture frequently, and water once every 7-10 days in the evening or early morning. After watering on the day of cutting, spray foliar fertilizer together with the chemical spray, using 1000 times dilution of Greenfenwei powder, or 0.2% urea spray.
2.5 Hardening Off
About 90% of the spike shoots rooting 30 days after cutting means hardening off can begin. In the evening, first remove the film at both ends for ventilation for 2 days, then remove it entirely. After removing the film, carry out full-light management. Water and spray foliar fertilizer in time, watering about once every 15 days, while spraying foliar fertilizer with 0.2% urea spray.
The above are the key cultivation techniques for golden variegated star jasmine. Friends who are interested in learning about golden variegated star jasmine cultivation techniques should quickly follow Huinong Network!
Cultivation Techniques for Star Jasmine
Star jasmine belongs to the Apocynaceae family, genus Trachelospermum, and is an evergreen woody vine. Aliases: Shilongteng, Wanzihua, Wanzi Jasmine. It is native to China, and is now cultivated in most areas of our country. Star jasmine grows in mountain wilds, beside streams, along roadsides, at forest edges or in mixed woods, often twining around trees or climbing on walls and rocks, and is also transplanted in gardens and nurseries. Star jasmine is evergreen all year round, with delicate and graceful flowers, simple and distinctive, like small pinwheels, with strong creeping and climbing ability. It is a good fragrant flower, mostly used as ground cover or potted ornamentals in gardens.
Star Jasmine
The stem of star jasmine is reddish brown, up to 10 m long, with aerial roots. Leaves are simple, opposite, leathery or nearly leathery, elliptic to ovate-elliptic or broadly obovate. Dichasial cymes are axillary or terminal, with many flowers forming a panicle-like shape, white and fragrant. Follicles are paired, divergent, hairless, linear-lanceolate, with many seeds, brown, linear, with white silky seed hairs at the apex. Flowering period March to July, fruiting period July to December. Star jasmine likes a semi-shaded and humid environment, is drought-tolerant and cold-tolerant, and grows well on well-drained sandy loam. The roots, stems, leaves and fruits of star jasmine can be used medicinally, with effects of dispelling wind and activating collaterals, benefiting the joints, stopping bleeding, relieving pain and reducing swelling, and clearing heat and detoxifying.
Cultivation Techniques for Star Jasmine
(1) Seedling technique: In July, cut vigorous young branches with aerial roots for layering propagation, with the layer buried 3 cm deep in the soil, then move to a semi-shaded place for care. The following year, the rooted layer can be dug up for transplanting.
(2) Planting technique: Choose well-drained sandy loam and transplant with a soil ball. Potted cultivation requires light soil. After planting, water to keep the soil moist, frequently spray water on the branches and leaves to increase humidity, and set up supports in time for it to climb on. During the growing period, apply fertilizer water 1-2 times per month, avoiding direct scorching sunlight. Prune appropriately to maintain a good plant shape.
Cultivation Techniques for Star Jasmine
China Landscape Network news on November 2: Star jasmine belongs to the Apocynaceae family, genus Trachelospermum, and is an evergreen woody vine. Aliases: Shilongteng, Wanzihua, Wanzi Jasmine. It is native to China, and is now cultivated in most areas of our country. Star jasmine grows in mountain wilds, beside streams, along roadsides, at forest edges or in mixed woods, often twining around trees or climbing on walls and rocks, and is also transplanted in gardens and nurseries. Star jasmine is evergreen all year round, with delicate and graceful flowers, simple and distinctive, like small pinwheels, with strong creeping and climbing ability. It is a good fragrant flower, mostly used as ground cover or potted ornamentals in gardens.
Star Jasmine
The stem of star jasmine is reddish brown, up to 10 m long, with aerial roots. Leaves are simple, opposite, leathery or nearly leathery, elliptic to ovate-elliptic or broadly obovate. Dichasial cymes are axillary or terminal, with many flowers forming a panicle-like shape, white and fragrant. Follicles are paired, divergent, hairless, linear-lanceolate, with many seeds, brown, linear, with white silky seed hairs at the apex. Flowering period March to July, fruiting period July to December. Star jasmine likes a semi-shaded and humid environment, is drought-tolerant and cold-tolerant, and grows well on well-drained sandy loam. The roots, stems, leaves and fruits of star jasmine can be used medicinally, with effects of dispelling wind and activating collaterals, benefiting the joints, stopping bleeding, relieving pain and reducing swelling, and clearing heat and detoxifying.
Cultivation Techniques for Star Jasmine
(1) Seedling technique: In July, cut vigorous young branches with aerial roots for layering propagation, with the layer buried 3 cm deep in the soil, then move to a semi-shaded place for care. The following year, the rooted layer can be dug up for transplanting.
(2) Planting technique: Choose well-drained sandy loam and transplant with a soil ball. Potted cultivation requires light soil. After planting, water to keep the soil moist, frequently spray water on the branches and leaves to increase humidity, and set up supports in time for it to climb on. During the growing period, apply fertilizer water 1-2 times per month, avoiding direct scorching sunlight. Prune appropriately to maintain a good plant shape.