What Fertilizer to Apply to Garlic for High Yield? Detailed Guide to Planting and Fertilization Techniques
During land preparation, apply 3000-3500kg/mu of decomposed farmyard manure, 50kg/mu of ordinary calcium superphosphate, and 30kg/mu of garlic-specific compound fertilizer; the fertilizer and soil must be mixed evenly. The first application is at the mother-bulb depletion stage (4-5 leaves), mainly with N fertilizer, applying 15-20kg/mu of urea. The second application is at the bulb expansion stage (9-10 leaves), that is, when the garlic scapes are about to show their bracts, apply a heavy dose once, with 10-15kg/mu of urea and 30-40kg of potassium sulfate-type compound fertilizer (15:15:15). The third application is when about 50% of the scapes have been harvested, applying 15-20kg/mu of potassium sulfate-type compound fertilizer (15:15:15).
1. Garlic fertilization is mainly based on base fertilizer, supplemented by topdressing, mainly with high-quality organic fertilizer, supplemented by chemical fertilizer.
2. Garlic base fertilizer: during land preparation, apply 3000-3500kg/mu of decomposed farmyard manure, 50kg/mu of ordinary calcium superphosphate, and 30kg/mu of garlic-specific compound fertilizer; the fertilizer and soil must be mixed evenly.
3. Garlic topdressing: throughout the entire growth period, according to the fertilizer requirements and growth conditions of garlic, garlic grown for bulbs and scapes as the target products generally needs 2-3 topdressings.
4. The first application is at the mother-bulb depletion stage (4-5 leaves), mainly with N fertilizer, applying 15-20kg/mu of urea.
5. The second application is at the bulb expansion stage (9-10 leaves), that is, when the garlic scapes are about to show their bracts, apply a heavy dose once, with 10-15kg/mu of urea and 30-40kg of potassium sulfate-type compound fertilizer (15:15:15).
6. The third application is when about 50% of the scapes have been harvested, applying 15-20kg/mu of potassium sulfate-type compound fertilizer (15:15:15). Garlic grown for garlic sprouts as the target product only receives the mother-bulb depletion fertilizer, and topdressing is prohibited within 30 days before harvesting the green garlic sprouts. Each fertilization should be combined with irrigation.
7. In addition, in early April of the second year of garlic planting, combined with watering to strengthen the seedlings, apply 10kg of quick-acting urea fertilizer per 667 square meters. In mid-April, dissolve 0.5kg of potassium dihydrogen phosphate in 50kg of water and spray it per 667 square meters.