Udult

Udult

[′üd‚əlt]
(geology)
A suborder of the soil order Ultisol; organic-carbon content is low, argillic horizons are reddish or yellowish; formed in a udic moisture regime.
References in periodicals archive ?
Soils are classified in the Ultisol order and Udult suborder according to the USDA soil classification system [20].
Soils at Misiones are typified as Rhodudults and the one from Corrientes as an Udult.
This soil is a sandstone-derived sandy haplic acrisol (or udult ultisol, see Davies and Becker 1996), with a high sand content, and is generally nutrient poor (Baillie et al.
The low-mountain forestland (LF) is now covered with secondary shallow-rooted coniferous forests (altitude <800m a.s.1.), such as Cunninghamia lanceolata, Pinns massoniana, Cupressus funebris, and Pinns armandii (Xie and Chen 1998), and the local soils are classified as Udults (Soil Survey Staff 1992).
Con base en el mapa de recategorizacion de las zonas de vida de Guatemala (IARNA-URL 2015), se determino que el area de estudio se encuentra en la zona de vida bosque muy humedo tropical (bmh-T), sobre suelos de orden Ultisol con sub ordenes Humults y Udults los ultimos caracterizados por sus niveles de productividad muy bajos (Tobias 2010).
The soil used in these experiments was an ultisols sub-order udults (NRCS, 2013).
1) and its Ultisol Udults soils possess a low base saturation, which requires farmers to abandon fields after a few years of production (Soil Survey Staff, 1999).
The dominant suborders of Ultisols are Aquults, Humults, Udults, Ustults, and Xerults (Table 3-5).
En el lomerio, la distribucion de los suelos tiende a un predominio de Ultisoles (Kandiudults, figura 9, mas que Paleudults y Hapludults) y Oxisoles (con abundancia de Hapludox, Haploperox, Figura 9, y escasos Haplaquox), mientras que en las altiplanicies y superficies de aplanamiento los Oxisoles (Hapludox y Haploperox) predominan sobre los Ultisoles (Udults).
Characters of three udults and their relevance to the composition and structure of virgin rain forest of Amazonian Ecuador.
Soils are primarily well drained, clayey Udults formed in residuum of granite, gneiss, schist, or Carolina Slate.