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Soil Taxonomy Crossword

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Across
1
Horizon similar to Argillic but with kaolinite clay
3
Most brittle of three pan types
7
Least developed soil order
9
Human made high humus horizon
12
Relatively acidic soil order, found in the Argillic horizon
14
Human made horizon with high phosphorous content
16
Soil order with few diagnostic features, occur over wide range of parent material and climatic conditions
18
Soil order high in organic material, includes peat lands and bogs
20
Illuvial horizon of accumulated collodial organic matter and aluminum oxide
21
Soil order similar to Ultisols, found in similar regions, moderately leached
22
Horizon similar to Mollic but with base saturation lower than 50%
24
Soil order found in humid areas, often acidic and forested by coniferous trees
27
Highly weathered soil order, found in tropical regions
28
Mineral horizon dark in color due to high organic matter. "Fluffy" for a mineral soil
29
Soil order dominated by volcanic ash
30
Horizon rich in calcium carbonate, not cemented
Down
2
Dense, strongly silica-cemented horizon layer
4
Light colored eluvial horizon, low in clay and oxides of iron and aluminum
5
Infrequently flooded, organic horizon
6
Horizon with clay coating or accumulation often trans-located from upper horizons
8
Horizon formed in wet areas with thick layer of organic material
10
As the name implies, dry soil order, often contain accumulation of salt or gypsum
11
Swelling and cracking clay soil order that developes wedge structures in sub soil horizons
13
Soil order with dark surface horizon, grassland and prairie soils
15
Horizon with high exchangeable sodium in clay, found in arid regions
17
Mineral horizon too thin, too light in color or too low in organic matter to be Umbric or Mollic
19
Soil order containing permafrost
23
Dark horizon with high organic matter and base saturation greater than 50%
25
Highly weathered horizon, high in iron and aluminium
26
Pan horizon cemented by iron and manganese