Figure 1.

Figure 2.

Figure 3.

Figure 4.
![Values of colours of strawberry fruits [(A): L, (B): C and (C): h].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/6471d13c215d2f6c89db1c80/j_fhort-2023-0017_fig_004.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251209%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251209T031738Z&X-Amz-Expires=3600&X-Amz-Signature=88879e092ca0833b97398e84e5e81fb1dd316f92d0f55c432f1577bb3ced591e&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 5.

Figure 6.

Figure 7.

Figure 8.

Soil properties of the study area_
| Parameter | Value | Comment |
|---|---|---|
| pH | 7.86 | Alkali |
| Lime | 16.36% | High chalky |
| Organic matter | 1.82% | Poor |
| Structure | 64.90% | Clay loam |
| Salinity | 0.051% | Without salt |
| P2O5 (phosphorus) | 10.72 ppm | Medium |
| K2O (potassium) | 179.79 ppm | High |
| Ca (calcium) | 43.50 ppm | Rich |
| Mg (magnesium) | 406.50 ppm | Rich |
| Fe (iron) | 1.72 ppm | Little |
| Zn (zinc) | 1.16 ppm | Very high |
| Mn (manganese) | 0.78 ppm | Insufficient |
| Cu (copper) | 2.54 ppm | Sufficient |
Mean comparison of the effect of different planting dates on the SSC/TA ratio (ripening index) of different cultivars of strawberry_
| Planting time | Strawberry cultivars | SSC/TA |
|---|---|---|
| 05.04.19 | Albion | 15.8 a |
| Portola | 12.61 d | |
| San Andreas | 14.8 b | |
| 20.04.19 | Albion | 13.06 c |
| Portola | 12.6 d | |
| San Andreas | 14.58 b |