Table 5.
Chemistry at planting and harvest of soil treated with a seaweed extract from Durvillaea potatorum and Ascophyllum nodosum (SE) in a strawberry trial (cv. Albion) in the nursery sector at Toolangi, Victoria, Australia
| Parameter | Planting | Harvest | ||||
|---|---|---|---|---|---|---|
| Untreated | SE | LSD (p = 0.05) | Untreated | SE | LSD (p = 0.05) | |
| pH (1:5 water) | 6.0 a | 6.0 a | 0.2 | 5.7 a | 5.9 a | 0.4 |
| EC (dS m−1) | 0.20 a | 0.19 a | 0.03 | 0.25 a | 0.22 a | 0.05 |
| Cl (mg kg−1) | 10 a | 10 a | 1 | 16 a | 14 a | 4 |
| Organic carbon (%) | 4.1 a | 4.5 a | 0.7 | 4.4 a | 4.8 a | 0.6 |
| CEC (cmol(+) kg−1) | 10.2 a | 9.7 a | 1.9 | 12.6 a | 10.2 a | 2.7 |
| Ca (cmol(+) kg−1) | 7.3 a | 7.9 a | 0.8 | 9.9 a | 9.7 a | 0.9 |
| Mg (cmol(+) kg−1) | 0.9 a | 0.8 a | 0.2 | 1.0 a | 1.1 a | 0.3 |
| Na (cmol(+) kg−1) | 0.03 a | 0.03 a | 0.01 | 0.07 a | 0.11 a | 0.08 |
| K (cmol(+) kg−1) | 1.1 a | 1.1 a | 0.2 | 1.7 a | 1.4 a | 0.5 |
| Ammonium-N (mg kg−1) | 1.4 a | 1.6 a | 0.4 | 2.3 a | 2.7 a | 0.6 |
| Nitrate-N (mg kg−1) | 20 a | 21 a | 3 | 59 a | 63 a | 6 |
| Phosphorus (Colwell) (mg kg−1) | 130 a | 140 a | 22 | 210 a | 250 a | 51 |
| Available K (mg kg−1) | 440 a | 440 a | 19 | 530 a | 550 a | 76 |
| Sulphate-S (mg kg−1) | 65 a | 61 a | 6 | 86 a | 90 a | 7 |
| Aluminium (mg kg−1) | 0.24 a | 0.17 a | 0.11 | 0.28 a | 0.28 a | 0.10 |
| Zn (mg kg−1) | 0.5 a | 0.6 a | 0.3 | 0.8 a | 1.1 a | 0.5 |
| Cu (mg kg−1) | 0.20 a | 0.25 a | 0.09 | 0.35 a | 0.43 a | 0.26 |
| Fe (mg kg−1) | 24 a | 30 a | 9 | 51 a | 52 a | 9 |
| Mn (mg kg−1) | 0.8 a | 0.9 a | 0.3 | 1.6 a | 1.3 a | 0.6 |
Values followed by different letters in each row and each sampling time are significantly different, where p ≤ 0.05