ν¬λ μ΄νΈ μ² μ μμμ‘μμ μ©ν΄μ±μ μ μ§νκ³ μλ¬Όμ΄ μ΄μ©ν μ μλλ‘ μ κΈ° λΆμ(ν¬λ μ΄νΈ)μ ννμ μΌλ‘ κ²°ν©λ μ² (Fe)μ λλ€. λΉν¬λ μ΄νΈ μ² μ μ μμ μΈ μμ₯ pH μμ€μμ λΉ λ₯΄κ² μ°νλμ΄ μ©μ‘μμ μΉ¨μ λμ΄ μλ¬Ό λΏλ¦¬κ° μ κ·Όν μ μκ² λ©λλ€. κ°μ₯ μΌλ°μ μΈ ν¬λ μ΄νΈμ λ EDTA(pH 6.0κΉμ§ μμ ), DTPA(pH 6.5κΉμ§ μμ ) λ° EDDHA(pH 9.0κΉμ§ μμ )μ λλ€.
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- Unchelated iron precipitates above pH 6.5 and becomes unavailable to plants
- EDTA chelate: effective at pH 4.0β6.0 β suitable for most hydroponic systems
- DTPA chelate: effective up to pH 6.5 β better for slightly higher pH ranges
- EDDHA chelate: stable up to pH 9.0 β used in soil and high-alkalinity water
- Iron deficiency causes interveinal chlorosis on new leaves (yellowing between green veins)
- Most complete hydroponic nutrients contain EDTA or DTPA chelated iron