Treatments

N (1 L 25 mM NH₄Cl)

N + P + K + S (1 L 25 mM NH₄Cl, 20 mM Na₃PO₄, 4 mM KCl, plus 50 mM Na₂SO₄)

K (1 L 4 mM KCl)

S (1 L 50 mM Na₂SO₄)

P + S (1 L 20 mM Na₃PO₄, plus 50 mM Na₂SO₄)

P (1 L 20 mM Na₃PO₄)

N + S (1 L 25 mM NH₄Cl plus 50 mM Na₂SO₄)

N + P + K (1 L 25 mM NH₄Cl, 20 mM Na₃PO₄, plus 4 mM KCl)

P + K (1 L 20 mM Na₃PO₄, plus 4 mM KCl)

Control (untreated)

0.1% N-Carboxymethyl Chitosan solution.