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onion
Allium cepa
Onions (Allium cepa) are perennial plants, but are generally cultivated as biennial crops. Growth Characteristics - Roots: They have a shallow and fine root system and prefer well-drained soil. - Leaves: Tubular leaves extend linearly. - Bulb: It takes the form of a scale bulb, which is generally the part we eat. - Growing Conditions: They prefer sunny locations and soil rich in humus. An ideal pH is 6.0 to 6.8. Propagation Methods Onions are primarily propagated by seeds or bulb division. - Seed Propagation: Seeds are sown directly or seedlings are grown and transplanted. - Bulb Division: This is mainly used in home gardens, where new bulbs are separated and planted. Cultivation Methods - Sowing Time: Generally, seeds are sown in both spring and autumn. Cool temperatures are suitable. 2. Spacing: Although it varies depending on the soil and variety, a spacing of approximately 10 to 15 cm between bulbs is generally appropriate. - Watering: Adequate moisture is necessary during the initial stages, but it is advisable to avoid overwatering during the harvest season. - Fertilizer: Regularly apply fertilizer containing a balanced mix of nitrogen, phosphorus, and potassium. Uses in the GardenOnions are widely used in cooking, making them suitable for home gardens. Additionally, planting them alongside other vegetables can help prevent pests and diseases. Important Pests and Control Methods - Diseases: - Black Spot: Create an environment with good drainage and ventilation. - Downy Mildew: This primarily occurs when there is excessive moisture; as a preventive measure, it is important to plant at appropriate intervals. - Pests: - Diptera pests: Can be controlled using various insecticides. - Nematodes: To prevent infestation, plant repellent plants or use nematode control agents. Comprehensive Pest Control Methods - If you prefer organic farming, you can manage pests and diseases through natural control methods (biopesticides). - You can reduce the occurrence of pests and diseases through crop rotation combined with periodic soil inspections. Growing onions is relatively easy and efficient, making it one of the most useful crops for home gardens. You can achieve good results by following proper cultivation methods while paying attention to pest and disease management.
Plant Type
Plant Family
Lily family
Height
50~100cm
Spread
Colors
white
Bloom Period
September
Water Needs
commonly
Exposure
Sunny
Freezing Resistance
-5°C
green onion
Allium fistulosum
Joseon garlic
Allium scorodorpasum var. multibillosum