Table 3.
Nutrient levels into the recovery NS calculated in function of the real needs of the crop.
| DAT | Phenological phases | N | K+ | P | Ca2+ | Mg2+ | Na+ | EC* |
|---|---|---|---|---|---|---|---|---|
|
(mM) |
dS m-1 | |||||||
| 28 | Beginning of flowering of first truss | 8.0 | 4.4 | 1.0 | 1.9 | 1.2 | 0.3 | 1.2 |
| 47 | Beginning of flowering of second truss | 11.0 | 6.4 | 1.4 | 2.8 | 1.4 | 0.9 | 1.7 |
| 61 | Beginning of flowering of fourth truss | 10.5 | 4.1 | 1.0 | 2.1 | 0.9 | 1.0 | 1.3 |
| 84 | Beginning of flowering of sixth – seventh truss + fruits | 9.1 | 4.2 | 0.9 | 2.2 | 1.1 | 1.4 | 1.3 |
| 105 | Beginning of flowering of 9th – 10th truss + fruits | 7.5 | 3.4 | 0.8 | 1.6 | 1.0 | 1.0 | 1.1 |
| 117 | First harvest | 6.9 | 3.0 | 0.8 | 1.1 | 0.8 | 0.8 | 0.9 |
| 131 | Second harvest | 5.8 | 2.9 | 0.7 | 0.9 | 0.6 | 0.7 | 0.8 |
| 146 | Sixth harvest | 4.9 | 2.3 | 0.7 | 1.0 | 0.6 | 0.7 | 0.8 |
| 167 | 10th harvest | 3.4 | 2.0 | 0.6 | 0.9 | 0.6 | 0.6 | 0.7 |
DAT, days after transplant. *Theoretical EC calculated using the formula proposed by Sonneveld and de Kreij (1999): EC = 0.095 + 0.19 Ct, where Ct is the total concentration of anions or cations present in the NS (in meq⋅L-1).