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https://www.groworganic.com/blogs/articles/chill-hours-what-are-they-how-do-i-count-them-and-why-do-my-fruit-trees-car#:~:text=The%20traditional%20definition%20of%20a%20chill%20hour%20is,if%20the%20temperature%20is%20between%2045%C2%B0F%20and%2034%C2%B0F.
https://www.groworganic.com/blogs/articles/chill-hours-what-are-they-how-do-i-count-them-and-why-do-my-fruit-trees-car
The traditional definition of a chill hour is any hour under 45°F. But wait, there's more. But wait, there's more. Academics have competing theories on what "chill" means.
https://www.cultivatetoplate.com/what-are-chilling-hours-and-why-are-they-important/
Chill hours are the total number of hours below 45 degrees F that a plant is exposed to during their dormant period to produce properly developed fruit. Some …
https://etweather.tamu.edu/chill/
Chilling hours are calculated as a tool for fruit producers to gauge whether their crop has been exposed to cold temperatures for a long enough time period. This table shows chilling hours as recorded at the Overton Center and should provide you with an estimate of chilling hours if you live in northeast Texas.
https://myperfectplants.com/blogs/blog/chill-out-chill-hour-requirements-and-what-they-mean-for-your-plants
Sep 21, 2021. If you’ve done some shopping (window or otherwise) for fruit or nut trees, you might have noticed the phrases “chill hours” or “chill zones” in the plant’s description. Though there’s some debate on the topic, it’s generally acknowledged that chill hours are the average number of hours plants are subjected to temperatures between 32 degrees and 45 degrees during the dormant period …
https://www.plantmegreen.com/pages/plant-hardiness-zones-and-chill-hours
Chill Hours (sometimes called Chill Units) are an approximation of how many hours of weather between 32 degrees and 45 degrees (F) a plant requires to properly go dormant so it can wake up and blossom and/or set fruit. Notice, it is not the amount of time the temperature is below freezing.
https://davesgarden.com/guides/terms/go/167/
Definition as written by JaxFlaGardener: A standard definition of chilling requirement (or chilling hours) is the number of hours that the temperature is within the range less than or equal to 45 degrees F and greater than or equal to 32 degrees F. Other definitions simply consider the …
https://ugaurbanag.com/blueberry-chill-hours-what-are-they/
Chill hours are the number of hours of winter temperatures 45 degrees F and below. If blueberry plants do not receive the adequate amount of chilling, bloom and leaf development can be late and erratic. This can result in a lackluster harvest. To sum it …
https://www.houzz.com/discussions/1749701/chill-hours
Once the chilling requirement is met, soil temperatures need only rise above about 45* F, for as short a time as 3-4 days to initiate growth. Some temperate plants, if deprived of a dormant period, will still break bud in spring, usually very late.
https://pickyourown.org/peachvarieties-chilling-hours.php
Chilling hours are the minimum number of hours that a peach tree needs to get, specifically, nighttime temperatures between 32 and 45 degrees Fahrenheit, in order to produce a good crop of peaches.. If the hours are not met (say in a warm winter), the blossoms mostly just fall off the trees and do not set fruit. Of course... temperatures can also be TOO cold!
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