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  1. en.wikipedia.org › wiki › HydroponicsHydroponics - Wikipedia

    Há 14 horas · KNO 3, K 2 SO 4, KCl, KOH, K 2 CO 3, K 2 HPO 4, and K 2 SiO 3: High concentrations interfere with the function of Fe, Mn, and Zn. Zinc deficiencies often are the most apparent. Phosphorus: Essential macronutrient: PO 3− 4: 30: 100: K 2 HPO 4, KH 2 PO 4, NH 4 H 2 PO 4, H 3 PO 4, and Ca(H 2 PO 4) 2: Excess NO − 3 tends to inhibit PO 3− 4 ...