Learning objectives: soil types Flashcards
What is loam?
Typically 40% sand, 40% silt, 20% clay.
Loam soils generally contain more nutrients, moisture, and humus than sandy soils, have better drainage and infiltration of water and air than silt- and clay-rich soils, and are easier to till than clay soils.
(Image credit: By cmglee, Mikenorton, United States Department of Agriculture - SoilTexture USDA.pngand http://nrcs.usda.gov/Internet/FSE_MEDIA/nrcs142p2_050242.jpg, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=88418567)
What is marl?
An earthy material rich in carbonate minerals, clays, and silt.
Soils in:
Galicia
Coast: granite-based. Sandy, shallow, slightly acidic.
Inland along terraced river valleys: granite with clay.
Further inland: shallow slate, shale, granitic sand.
(Granite is ideal in the wet - porous and well drained.)
Soils in:
DO Rías Baixas in Galicia
Shallow, sandy soils, some granite. Some alluvial soil along Miño river.
Soils in:
DO Ribeira Sacra in Galicia
Miño river: slate
Sil and Bibei rivers: granite
Soils in:
DO Ribeiro in Galicia
~70% granite, rich in organic matter.
~20% schist
~10% sedimentary
Soils in:
DO Valdeorras in Galicia
Mainly shallow slate topsoil atop quartzite and schist bedrock
Soils in:
Asturias
Limestone mountains give way to well-drained slate soils.
VC Cangas: mostly shale with sandstone
Soils in:
Cantabria
Limestone mountains, more shale and sandstone in the valley floors. Very fertile and better for apple trees and sidra (cider) production.
Soils in:
País Vasco
Guipúzcoa (E): sandy topsoil, alluvial clay subsoil.
Vizcaya (W): shallow, slightly acidic clay-loam topsoil, limestone subsoil.
Álava (S): alluvial, gravelly clay.
Soils in:
DO Arabako Txakolina in País Vasco
Limestone with stone and clay. All DOs are rich in organic matter.
Soils in:
DO Bizkaiko Txakolina in País Vasco
Clay-loam, limestone and marl. All DOs are rich in organic matter.
Soils in:
DO Getariako Txakolina in País Vasco
Sandy topsoil with alluvial clay subsoil. All DOs are rich in organic matter.
Soils in:
Castilla y León
Diverse.
River valleys: clay, alluvium; or sandy-stony with some limestone. Mineral-laden. Only water retentive if clay is present.
Plains: brown limestone, clay loam and sand.
Some slate, quartz, granite. Some sandy and phylloxera-resistant.
Soils in:
DO Bierzo in Castilla y León
Granite, limestone, quartzite, slate
Soils in:
DO Cigales in Castilla y León
Sand and limestone topsoil, clay and loam subsoil.
Soils in:
DO Ribeira del Duero in Castilla y León
32 different soil types.
Mainly sandy limestone and clay.
Soils in:
DO Rueda in Castilla y León
Gravel and stone, sandy limestone, limestone.
Soils in:
DO Toro in Castilla y León
Sand and clay with limestone
Soils in:
Rioja
Calcareous (chalky) clay: 30%, N of Ebro in all of Rioja Alavesa and some of Rioja Alta, poor soil, difficult to cultivate and irrigate.
Ferrous clay: 25%, S of Ebro on low mountains, also lower hillsides in Rioja Alta and Rioja Oriental, compact, vine roots slow to penetrate, slopes hard to cultivate and irrigate.
Alluvium, 45%: 1m thick over limestone hardpan, Rioja Alta and Rioja Oriental along banks of Ebro and tributaries, shallow soil prone to drought and waterlogging. Flat, mechanised.
Soils in:
Rioja Alavesa
Calcareous (chalky) clay, high limestone content: poor soil, difficult to cultivate and irrigate.
Soils in:
Rioja Alta
The most diverse. The bit north of the Ebro is calcareous clay. The rest is alluvium and ferrous clay.
Soils in:
Rioja Oriental
Alluvium and ferrous clay.
Soils in:
Ebro River Basin
Throughout: sedimentary loams, marls and sands.
N (numerous rivers): more alluvium.
S (nearer Sierra de la Demanda): more limestone.
Along Ebro: more clay.
Soils in:
DO Navarra in Ebro River Basin, and its subzones
Mainly marl, loam, sand. Some limestone in south. Clay along Ebro.
Differences from marl, loam, sand:
Tierra Estella (NW): clay, gravel.
Valdizarbe (NC): alluvium, less sand.
Baja Montaña (NE): limestone, gravel.
Ribera Alta (C): more clay, limestone (on high terraces).
Ribera Baja (S): limestone.
Soils in:
Aragón in Ebro River Basin
Diverse wine regions but similar soils. Limestone and clay, with surface scree of pebbles, stones and rocks. Pockets of slate, granite.
Soils in:
DO Calatayud in Aragón
Grey and red slate, clay, sand
Soils in:
DO Campo de Borja in Aragón
Brownish-grey limestone, clay
Soils in:
DO Cariñena in Aragón
Reddish-brown limestone, slate, clay
Soils in:
DO Somontano in Aragón
Brown limestone, clay
Soils in:
Cataluña
From Mediterranean Sea to Cordillera Litoral: sedimentary: alluvium, limestone, clay. Pockets of granite, slate.
From Cordillera Litoral to Cordillera Prelitoral: more metamorphic and igneous: slate, granite with limestone and calcareous clay. Some llicorella (decomposed slate/shale)
All low in organic content. Drainage varies.
Soils in:
DO Cava in Cataluña
Calcareous, clay, high limestone.
Soils in:
DO Empordà in Cataluña
Plains: alluvium.
Mountains: slate, granite.
Soils in:
DO Montsant in Cataluña
Panal: silty-loam.
Sauló: limey clay with granitic sand.
Llicorella: decomposed slate/shale.
Soils in:
DO Penedès in Cataluña
Limestone, loamy-clay
Soils in:
DOQ Priorat in Cataluña
Llicorella (exclusively): quartz-rich slate
Soils in:
DO Terra Alta in Cataluña
Loamy-clay with high limestone content
Soils in:
Valencia
Diverse.
Coast: marl, clay, sandstone.
Inland: limestone, loamy-sand.
Soils in:
DO Alicante in Valencia
La Marina (NE coast): clay.
Vinalopó (the rest of the coast and inland): limestone.
Soils in:
DO Utiel-Requena in Valencia
Limestone with reddish-brown topsoil
Soils in:
Murcia
Vineyards on Altiplano de Jumilla-Yecla: limestone. Some topsoils of clay, sand. Topsoil must often be mechanically broken before planting.
Soils in:
DO Bullas in Murcia
Limestone, chalk, alluvium
Soils in:
DO Jumilla in Murcia/Castilla-La Mancha
Reddish-brown limestone, sandy-clay
Soils in:
DO Yecla in Murcia
Limestone
Soils in:
Castilla-La Mancha
Homogenous with pockets of water-retentive clay, sandy-clay.
C,E: Quality wine regions: well-drained limestone, often limestone hardpan beneath topsoil that must be broken up.
W,NW: clay, sandy-clay.
NE: clay, alluvium, granite.
Soils in:
DO La Mancha in Castilla-La Mancha
Limestone, chalk with sandy-clay topsoil
Soils in:
DO Manchuela in Castilla-La Mancha
Limestone, clay topsoil
Soils in:
DO Valdepeñas in Castilla-La Mancha
Limestone, sandy-loam, clay
Soils in:
VP Finca Élez in SE DO La Mancha
Sandy-clay, limestone
Soils in:
VP Dominio de Valdepusa in NW Castilla-La Mancha
Clay over limestone subsoil
Soils in:
Communidad de Madrid
N: granite
SW: granite
SC/SE: alluvium, limestone, loamy-clay
Soils in:
DO Vinos de Madrid by subzone
Arganda (SE): alluvium, limestone, loamy-clay.
Navalcarnero (SW): alluvium, loamy-sand.
San Martín de Valdeglesias (W): granite, alluvium.
El Molar (N): granite.
Soils in:
Extremadura
E near Montes de Toledo: granite, slate, sand
S near Sierra Morena: limestone.
SC near Guadiana river: sand, clay.
W near Portugal: limestone, sand.
Soils in:
DO Ribera del Guadiana in Extremadura
Clay, limestone
Soils in:
Andalucía
Large diverse area.
N near Sierra Morena: shallow limestone, clay.
E near Sistema Bético: deep slate, clay, limestone.
Marco de Jerez / DO Montilla-Moriles: albariza/albero.
Soils in:
DO Jerez-Xérès-Sherry and DO Manzanilla-Sanlúcar de Barrameda
Albariza: chalk, limestone, clay, sand.
Barros: clay.
Arenas: sand.
Soils in:
DO Málaga in Andalucía
Limestone, clay, decomposed slate
Soils in:
DO Montilla-Moriles in Andalucía
Albero (albariza): chalk.
Ruedos: sand over clay.
Soils in:
Las Islas Baleares, by island
Generally: topsoils nutrient-poor, calcareous. Subsoils of limestone high in calcium and magnesium carbonate.
Areas of Mallorca have limestone hardpan which must be broken. Pockets of loamy-clay. DO Pla i Llevant: call vermell, free-draining reddish clay, limestone gravels.
Menorca: marl over limestone, sandstone.
Ibiza: clay-loam over limestone.
Formentera: limestone, sand.
Soils in:
DO Binissalem, NC Mallorca
Limestone, large limestone gravel
Soils in:
DO Pla i Llevant, Mallorca
Call vermell: limestone, red clay topsoil
Soils in:
Las Islas Canarias
Nutrient rich, water-retentive. Volcanic, especially up to 800m. Above that: clay, sand, volcanic.
Lanzarote, La Palma: lapilli/picón, small volcanic pebbles over topsoil.
Soils in:
DO Lanzarote, Las Islas Canarias
Lapilli/picón over sand/clay
Soils in:
DO Tacoronte-Acentejo, NE Tenerife
Volcanic
Soils in:
DO Valle de la Orotava, NC Tenerife
Volcanic, sandy clay
Soils in:
DO Ycoden-Daute-Isora, NW Tenerife
Volcanic, sandy clay