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https://homeguides.sfgate.com/chill-requirements-apricot-trees-57693.html
Winter Chill Requirements. After apricot trees drop their leaves and enter dormancy, they must accumulate hours throughout the winter months where temperatures are 32 to 45 degrees Fahrenheit.
https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=26823
Apr 16, 2018 · Tables and charts have been developed for different chilling requirements of fruit trees. The number of hours needed at or below 45°F varies with the type of tree: Peach: 400 to 1050 hours. Apple: 800 to 1100 hours. Cherry: 1000+ hours. But in coastal Southern California, those hours are …
https://crfg.org/wiki/fruit/apricot-low-chill/
Propagation: Varieties may be grafted on peach, apricot or myrobalan plum rootstocks. Seedling apricots are slow to produce fruit and quality is unpredictable. Harvest: Please see notes in “Cultivars” section below. Commercial Potential: This fruit is currently a commercial crop in areas of adequate chill hours…
https://www.sciencedirect.com/science/article/pii/S0098847207000883
Dec 01, 2007 · The scarce data available for the apricot species, which is the least-studied temperate fruit with regard to chilling requirements, show that the range of chilling requirements in most apricot cultivars is from 800 to 1200 chill units, with extreme values of 500 and above 1400 (Guerriero et al., 2002, García et al., 1999, Tabuenca, 1964 ...Cited by: 246
https://harvesttotable.com/fruit-tree-chill-hours/
If the temperature stays cold chill hours accumulate. If the weather vacillates between cold and warm, chill hours will not accumulate. Check the chill hours of the fruit tree you want to grow. For example, ‘Desert Gold’ peach tree needs 300 chill hours each year; ‘Red Haven’ peach tree needs 950 chill hours each year.Estimated Reading Time: 6 mins
https://askthegreengenie.com/fruit-trees/low-chill-apricots/
Some sources say the chill hours required range between 200-300. Our 2019 crop is on Citation root stock and is growing very robustly, and this following a very mild winter. 'Katy' is a large, flavorful, free-stone apricot with a semi-sweet, low-acid flavor. It's been an …Estimated Reading Time: 2 mins
https://gardenerspath.com/plants/fruit-trees/best-cold-hardy-apricot-trees/
Jan 15, 2020 · This is referred to as chill requirement or chill hours. Varieties of apricot trees bred for long winters will have higher chill numbers (over 800), while those bred for short winters will have lower numbers (300, for instance). The chill requirement for any given variety is …Estimated Reading Time: 7 mins
https://www.gardenia.net/plant/prunus-armeniaca-goldcot
Apricot trees are fairly precocious, and begin fruiting in their second year, but substantial harvest does not begin until 3-5 years. This apricot tree has a chill hours requirement of 800 (hours of temperatures below 45ºF (7ºC) in the winter for their buds to open in the spring). This variety is self pollinating.Hardiness: 5-8What's My Zone?
https://www.groworganic.com/blogs/articles/chill-hours-what-are-they-how-do-i-count-them-and-why-do-my-fruit-trees-car
How to Count Chill Hours Here's the best way to count chill hours: get someone else to do it! Luckily, there are institutions already tracking this information. Farmers and gardeners in most California counties have access to official data on chill hours through the Pomology Weather Service at the UC Davis Fruit & Nut Research Information Center. This service records chill hours -- so you don ...
https://www.davewilson.com/home-garden/fruit-variety-recommendations/toms-picks-winners-low-chill-southwest/
For Southern California, we consider “low chill” to be 500 hours or less. Chill hours in the late fall and early winter contribute more toward satisfying a fruit tree’s chilling requirement than do hours in mid-to-late winter when the trees are beginning to push and break dormancy.
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