Treat Pharyngeal Extract,Therapeutic Pharyngeal Extract,Red Beet Extract Betanin Powder,Plant Extract Licorice Root Powder Shaanxi Zhongyi Kangjian Biotechnology Co.,Ltd , https://www.zhongyiherbs.com
Cut flower eustoma breeding method
There are typically three common methods for growing seedlings for cut flowers: live seedlings, transplant seedlings, and nest nursery. Each has its own unique advantages and challenges.
Live seedlings offer better growth compared to transplanted ones, but they require a large number of seeds and more labor during the early stages for weeding and thinning. Transplant seedlings, on the other hand, use only about 20% of the seeds needed for live seedlings, making them ideal for rare F1 seeds. They also allow for larger seedlings to be produced, but the process involves longer soil disinfection periods after transplanting and requires significant manual effort. Nest nurseries, which avoid using traditional nursery beds, reduce the risk of root rot by using disease-free soil and isolating plants. This method allows direct sowing without transplanting, saving time, resources, and labor. It also helps prevent root issues when planting, promoting healthier growth.
For live seedlings, it's important to choose dry soil that is easy to water and free from underground pests. The ideal soil pH is between 5 and 5.5. Seeds should be stored at 0°C for over a month or treated with gibberellin to break dormancy. Using fresh seeds is recommended, and storing them in sealed containers with desiccants can maintain germination rates for up to two or three years.
Nursery beds should not be used continuously, as this increases the risk of disease. If continuous cropping is unavoidable, different pesticides should be used in spring and autumn. A bed width of 90–100 cm and a height of 15 cm is ideal, along with a fine spray system to aid germination. Base fertilizers should be organic, such as composted manure and a balanced seedbed fertilizer. Chemical fertilizers should be avoided, especially alkaline ones like lime.
Sowing should occur at intervals of 5–6 cm, with a seeding rate of 0.5–0.7 ml per square meter. Spring sowing is best between late March and early April. The cover soil should be light, such as peat moss or sawdust, and not too thick. After sowing, the temperature should not exceed 25°C during the day, and the soil must remain moist for the first 20 days. Thinning should begin once 2–3 pairs of true leaves appear, leaving 2–3 plants per spot.
Transplant seedlings should be sown about a month earlier than live seedlings, usually between mid-February and mid-March. Each box should contain 0.3–0.5 ml of seeds and be covered with 200 ml of peat moss. The soil should be acidic (pH 5–6) and sterilized. Watering should be done carefully before germination, and temperatures should be maintained above 10°C. Transplanting should occur when 2–3 pairs of true leaves are present, ideally when the average temperature is above 10°C.
Nest nursery methods involve sowing directly into small containers, often using specialized equipment. Manual methods, such as using chopsticks to place seeds into trays, are also common. The quality of the soil is crucial, and proper watering and temperature control are essential. Germination occurs best at 15–20°C, and care must be taken to avoid high humidity and heat, which can cause root rot. Seedlings should be thinned appropriately, and watering should be done every 10 days with diluted liquid fertilizer after 40 days.
Next Article
Cut flower eustoma breeding method
Prev Article
Preservation and disinfection of eggs