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Growing degrees (GDs) is defined as the number of temperature degrees above a certain threshold base temperature, which varies among crop species. The base temperature is that temperature below which plant growth is zero. GDs are calculated each day as maximum temperature plus the minimum temperature divided by 2, minus the base temperature.
Find out the answers to these questions and more with the region-by-region breakdown of AccuWeather's 2024 spring forecast: ... growing season goes, this is actually going to be good for planting ...
Winters in Missouri can be long with temperatures ranging from mildly to bitterly cold. Kansas City's January daily mean temperature is 26 °F (−3 °C) and St. Louis's is 29 °F (−2 °C). The coldest temperature ever recorded in Missouri was −40 °F (−40 °C), set at Warsaw on 13 February 1905.
These potatoes also have coloured skin, but many varieties with pink or red skin have white or yellow flesh, as do the vast majority of cultivated potatoes. The yellow colour, more or less marked, is due to the presence of carotenoids. Varieties with coloured flesh are common among native Andean potatoes, but relatively rare among modern varieties.
It has been adapted by and to other countries (such as Canada) in various forms. A plant may be described as "hardy to zone 10": this means that the plant can withstand a minimum temperature of 30 to 40 °F (−1.1 to 4.4 °C). Unless otherwise specified, in American contexts "hardiness zone" or simply "zone" usually refers to the USDA scale.
Potatoes grow best under temperate conditions. [93] Temperatures above 30 °C (86 °F) have negative effects on potato crops, from physiological damage such as brown spots on tubers, to slower growth, premature sprouting, and lower starch content. [94] These effects reduce crop yield, affecting both the number and the weight of tubers.
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The plants often grow together in crowded colonies and spread by runners at or just under the soil surface. In late summer the plants produce tubers that are twice as long as wide, [9] each typically measuring 0.5 to 5 cm (1 ⁄ 4 to 2 in) in diameter. [8] The plant produces rosettes of leaves and an inflorescence on a long rigid scape.