pHλ 0μμ 14κΉμ§μ μ²λλ‘ μ©μ‘μ μ°μ± λλ μ칼리μ±μ μΈ‘μ νλ©°, 7μ΄ μ€μ±μ λλ€. μκ²½ μ¬λ°°μ ν μ μ¬λ°°μμ pHλ μ΄λ€ μμμκ° μλ¬Ό λΏλ¦¬μ ννμ μΌλ‘ μ΄μ© κ°λ₯νμ§λ₯Ό μ§μ μ μ΄ν©λλ€. λλΆλΆμ μλ¬Όμ μκ²½ μμ€ν μμ pH 5.5β6.5μμ κ°μ₯ μ μλλλ€.
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- Scale runs 0β14: below 7 is acidic, above 7 is alkaline, 7 is neutral
- Hydroponic target range: 5.5β6.5 (slightly acidic) for most crops
- Soil target range: 6.0β7.0 depending on crop
- Out-of-range pH causes nutrient lockout β plants cannot absorb minerals even if present
- pH drifts over time as plants absorb nutrients and water evaporates
- Adjust with pH Up (potassium hydroxide) or pH Down (phosphoric acid)