Table 2.
Mean values of SPAD (Soil Plant Analysis Development) index and colour components of perennial wall rocket as affected by crop cycle and biostimulant.
| Source of Variance | SPAD | L* | a* | b* | |
|---|---|---|---|---|---|
| Crop cycle | |||||
| Winter | 36.9 | 39.0 | −12.9 | 18.9 | |
| Winter–Spring | 38.8 | 40.3 | −14.3 | 21.1 | |
| n.s. | n.s. | * | * | ||
| Biostimulant | |||||
| Non-treated | 35.8 | b | 38.6 | −13.4 | 19.7 |
| Tropical plant extract (PE) | 38.4 | a | 40.0 | −13.6 | 20.1 |
| Legume-derived protein hydrolysate (PH) | 39.3 | a | 40.3 | −13.7 | 20.3 |
| n.s. | n.s. | n.s. |
Within each column: n.s., no statistically significant difference; * significant difference at p ≤ 0.05; means followed by different letters are significantly different according to the Duncan test at p ≤ 0.05.