- Nitrogen Fertilizers: These promote lush green foliage and establish a strong foundation for future bulbs. Popular choices include ammonium nitrate, urea, and ammonium sulfate.
- Potash Fertilizers: Particularly beneficial for early onion varieties, they include potassium salt, potassium sulfate, or ash.
- Phosphorus Fertilizers: Strengthen the onion’s immune system and reduce susceptibility to diseases. Superphosphate or double superphosphate are effective options.
- Moderation: Avoid over-fertilizing, as it can adversely affect the harvest.
- Ash Solution: Mix 200 g of ash with 10 liters of water. Let it steep for 2-3 days before watering the beds.
- Manganese Solution: Dissolve 3-4 crystals per liter of water. This solution not only nourishes the onions but also safeguards against diseases and pests.
- Yeast Solution: Combine 100 g of fresh yeast with 10 liters of warm water. Allow it to infuse for 2 hours before applying to the beds.
- Timing: Apply fertilizers for active growth during the first half of summer and for temperature resistance 2-3 weeks before harvesting.
- Avoid Fresh Manure: It can harm the onion’s roots. Instead, integrate feeding with watering for better absorption.
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