Boroll

Boroll

[′bȯ‚rȯl]
(geology)
A suborder of the soil order Mollisol, characterized by a mean annual soil temperature of less than 8°C and by never being dry for 60 consecutive days during the 90-day period following the summer solstice.
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References in periodicals archive ?
The soil at Winnipeg was clay (Riverdale series, Entisol, Cumulic Regosol) with gradual release of water and slow development of stress, while the soil at Carman was sandy clay loam (Denham and Eigenhof series, Udic Boroll, Orthic Black Chernozem) with characteristic quick release of water and rapid development of stress.