Udoll

Udoll

[′üd‚ȯl]
(geology)
A suborder of the Mollisol soil order; found in humid, temperate, and warm regions where maximum rainfall comes during growing season; has thick, very dark A horizons, brown B horizons, and paler C horizons.
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References in periodicals archive ?
19] quienes afirman que la aplicacion a largo plazo de fertilizantes quimicos sobre un suelo Udoll no induce cambios significativos sobre la biomasa y la diversidad microbiana.
6 for USA Udoll (43% clay) (Larson and Padilla 1990) and Brazil Humic Ferralsol (a Ferralsol is the FAO equivalent of an Oxisol) (82% clay) (van den Berg et al.
The soil climate is classified as mesic passing from Udoll to Ustoll (Van Wanbecke and Scoppa, 1980).
The first class was defined using the following soil suborders as indicators of wetland presence, since they are related to hydromorphic processes: Alfisols of Suborders Aqualfs, Entisols Aquents and Fluvents, Inceptisols Aquepts, Mollisols Aquic and Aquolls and Histosols Saprists and polygons corresponding to Mollisols of Suborders Udolls and Ustolls corresponding to subgroup Aquic (Table 2).
In the United States the dominant suborders of Mollisols appear as sequential bands across the country reflecting the moisture regimes in which each Mollisol developed: Albolls, Aquolls, Cryolls, Rendolls, Udolls, Ustolls, and Xerolls (Table 3-5; Figure 3-13).
Potentillo rigoanae-Brachypodietum genuensis soils are to be included in theMollisols order, suborder Udolls, great group Hapludolls, subgroup entic Hapludolls (brown rendzina).
Los Mollisoles de Costa Rica ocupan una extension relativamente pequena (1,4% del territorio cartografiado del pais) y en su mayoria dentro del regimen de humedad ustico del Pacifico Norte y Central, por lo que clasifican como Udolls y Ustolls, algunos con caracteristicas verticas (Bertsch et al.
Soils in this MLRA are mainly Udolls and were generally formed on loess that ranges in thickness from approximately 25 m (82 ft) on the ridges to [less than] 5 m (16 ft) in the valleys.
Soils in the region are mainly Udolls and Orthents that are generally deep and range from medium to moderately fine-textured.