Table 3. Basic pedo-climatic features of the five PRP locations.
Features include geographic coordinates, altitude, average annual minimum and maximum temperatures, and cumulative annual precipitation (data series 1999–2018). Chilling accumulation was calculated according to the Chilling Hours (CH) model as the sum of hourly temperatures between 0°C and 7.2°C during the dormant season. S.O.M., Soil organic matter content.
| Site | Geographic Coordinates | Altitude | Climate | Soil | ||||
|---|---|---|---|---|---|---|---|---|
| Average Annual Temperature (Minimum/Maximum) | Cumulative Precipitation | Chilling Accumulation | Texture | pH | S.O.M. | |||
| m | °C | mm | CH | % | ||||
| CREA, Rome (Italy) | 41°47′ N/12°33′ E | 79 | 11.2/18.9 | 731 ± 155 | 1,171 ± 224 | Sandy, loam | 7.7 | 1.9 |
| CRPV, Imola (Italy) | 44°20′ N/11°45′ E | 53 | 9.5/17.9 | 964 ± 218 | 1,753 ± 195 | Silty, loam | 7.2 | 1.5 |
| IMIDA, Mula (Spain) | 38°3 N/1°25′ O | 278 | 12.0/24.5 | 336 ± 75 | 693 ± 159 | Clay | 7.8 | 2.6 |
| IPB&GR, Naoussa (Greece) | 40°37′ N/22°06′ E | 119 | 8.1/17.2 | 818 ± 160 | 1,762 ± 124 | Sandy, loam | 6.8 | 2.5 |
| IRTA, Gimenells (Spain) | 41°39′ N/0°23′ E | 259 | 9.1/18.9 | 361 ± 95 | 1,637 ± 133 | Sandy, loam | 7.7 | 2.6 |