- Growing season
In
agriculture , the growing season is the period of eachyear when crops can be grown. It is usually determined byclimate and crop selection. Depending on the location,temperature , daylight hours (photoperiod ), andrainfall , may all be critical environmental factors.In the northern U.S. and
Canada , the growing season usually means theday s between last and firstfrost , or approximately the last and first occurrence of 0° C (freezing ) overnight low temperature. This is roughly May to October.In much of
Europe , the growing season is defined as the average number of days a year with a 24-hour average temperature of at least 5 °C (6 °C is sometimes used). This is typically from April until October or November, although this varies considerably withlatitude andaltitude .In the
United Kingdom , the growing season is defined as starting when the temperature on five consecutive days exceeds 5 °C, and ends after five consecutive days of temperatures below 5 °C. The 1961 to 1990 average season length was 252 days (8.4 months).cite web | last = | first = | authorlink = | coauthors = | year = 2002 | url = http://www.defra.gov.uk/environment/statistics/globatmos/kf/gakf19.htm | title = Length of thermal growing season | format = | work = | publisher = Department for Environment Food and Rural Affairs | accessdate = 2007-07-10]In some warm climates (like in the subtropical
Savanna ), the growing season is limited by the availability of water, with little growth in the dry season.ee also
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Growing degree day
*Season References
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