Fruits & Nuts
Chill Hour and Chill Portion Comparison in Peaches
1 min read
The tables below make a general comparison between chill hours and chill portions in peaches. Keep in mind that currently, no actual conversion can be made from chill hours to chill portions or vice versa. The tables are based on field observations, which were related to accumulated chill hour and chill portions. Observations will continue over the years so a clearer picture of the relationship between chill portions to chill hours can be developed.
Chill Hours and Corresponding Chill Portions Required by February 15
| Chill Hours Needed | Chill Portions |
|---|---|
| 650 | ~30-35 |
| 750 | ~35-40 |
| 800 | ~40-45 |
| 850 | ~45-50 |
| 950 | ~50-55 |
| 1,050 | ~55-60 |
Estimated Chill Portion and Chill Hour Requirements by Variety
| Variety | Season | Chill Portion | Chill Hour |
|---|---|---|---|
| June Gold | Early | 30 - 35 | 650 |
| June Prince | Early | 30 - 35 | 650 |
| Clemson Pride | Mid | 30 - 35 | 700 |
| Desiree | Early | 30 - 35 | 700 |
| Dubois | Mid | 30 - 35 | 700 |
| Flavor Rich | Early | 30 - 35 | 700 |
| Harvester | Mid | 35 - 40 | 750 |
| Bounty | Mid | 35 - 40 | 800 |
| Loring | Mid | 35 - 40 | 800 |
| O'Henry | Late | 35 - 40 | 800 |
| Blaze Prince | Late | 40 - 45 | 850 |
| Caro Tiger | Late | 40 - 45 | 850 |
| Challenger | Mid | 40 - 45 | 850 |
| Elberta | Late | 40 - 45 | 850 |
| Fire Prince | Mid | 40 - 45 | 850 |
| Flame Prince | Late | 40 - 45 | 850 |
| July Prince | Mid | 40 - 45 | 850 |
| Parade | Late | 40 - 45 | 850 |
| Ruby Prince | Early | 40 - 45 | 850 |
| Scarlet Prince | Late | 40 - 45 | 850 |
| Winblo | Mid | 40 - 45 | 850 |
| PF Lucky 13 | Mid | 40 - 45 | 900 |
| Scarlet Rose | Mid | 40 - 45 | 900 |
| Red Haven | Mid | 45 - 50 | 950 |
| Big Red | Late | 45 - 50 | 1,000 |
| Fairtime | Late | 45 - 50 | 1,000 |
| Intrepid | Mid | 45 - 50 | 1,000 |
| July Rose | Mid | 55 - 60 | 1,000 |
| Big George | Late | 55 - 60 | 1,050 |
| Contender | Mid | 55 - 60 | 1,050 |