Table 3 Comparison of garden pot plant available nutrients (PAN) between control groups (S1-Trial I, S2-Trial II) with 100% Einheitserde substrate (+ commercial dried starter fertiliser) irrigated with commercial liquid fertiliser (Control + S1, S2), and pots filled with 100% Einheitserde (E, Trial I), and pots filled with 15% Humicacid Fiber-Substrate (HFS, Trial II), both irrigated with extensive (EAU) and intensive (IAU) aquaculture process water effluents.
Parameters | Control + S1 | Extensive (E + EAU) | Intensive (E + IAU) |
|---|---|---|---|
Trial I: PAN standard growth media substrate (“Einheitserde”) | |||
Dry matter (%) | 27.5 | 34.1 | 31.6 |
pH | 5.9 | 7.1 | 7.1 |
P (mg/100 g) | 61.3 | 31.2 | 15.0 |
K (mg/100 g) | 457.0 | 47.0 | 11.0 |
Ca (mg/100 g) | 1,118.8 | 976.0 | 1,235.2 |
B (mg/kg) | 2.4 | 0.6 | 0.5 |
Zn (mg/kg) | 9.6 | 3.0 | 2.9 |
Mo (mg/kg) | 0.5 | 0.2 | 0.1 |
Organic substance (%) | 46.0 | 23.2 | 36.6 |
NH4–N (mg/100 g) | 1.0 | 0.6 | 0.7 |
NO3–N (mg/100 g) | 40.3 | 1.0 | 39.9 |
Fe–EDTA (mg/kg) | 1448.9 | 464.9 | 575.9 |
Trial II: PAN Humicacid Fiber-Substrate | |||
|---|---|---|---|
Control + S2 | Extensive (HFS + EAU) | Intensive (HFS + IAU) | |
Dry matter (%) | 26.2 | 30.5 | 32.2 |
pH | 5.7 | 7.0 | 7.2 |
P (mg/100 g) | 71.4 | 23.3 | 15.0 |
K (mg/100 g) | 452.0 | 12.0 | 11.0 |
Ca (mg/100 g) | 1,178.3 | 858.6 | 1,149.3 |
B (mg/kg) | 2.5 | 0.5 | 0.5 |
Zn (mg/kg) | 10.7 | 6.2 | 5.4 |
Mo (mg/kg) | 0.4 | 0.1 | 0.1 |
Organic substance (%) | 31.3 | 26.6 | 33.8 |
NH4–N (mg/100 g) | 0.7 | 0.8 | 1.2 |
NO3–N (mg/100 g) | 49.5 | 0.8 | 30.7 |
Fe–EDTA (mg/kg) | 1,623.9 | 977.9 | 807.9 |
