Table 3.
Mean values of perennial wall rocket leaf quality indicators as affected by crop cycle and biostimulant.
| Source of Variance | Dry Matter | Organic Acids | ||||||
|---|---|---|---|---|---|---|---|---|
| Malic | Oxalic | Citric | Isocitric | |||||
| % | g·kg−1 d.w. | |||||||
| Crop cycle | ||||||||
| Winter | 9.25 | 26.4 | 0.88 | 21.0 | 0.64 | |||
| Winter–Spring | 8.84 | 25.9 | 0.80 | 21.4 | 0.58 | |||
| n.s. | n.s. | * | n.s. | * | ||||
| Biostimulant | ||||||||
| Non-treated | 8.54 | b | 25.5 | 0.78 | b | 19.7 | b | 0.60 |
| Tropical plant extract (PE) | 9.37 | a | 26.6 | 0.88 | a | 21.8 | a | 0.63 |
| Legume-derived protein hydrolysate (PH) | 9.23 | a | 26.3 | 0.87 | a | 22.1 | a | 0.61 |
| n.s. | n.s. | |||||||
d.w., dry weight. 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.