12 Questions
In which type of soil do we find a year-round plant growth resulting in a thick horizon?
Latosols
What is a common feature of Zonal Soils - Podzols that makes arable farming difficult?
Acidity and lack of nutrients
What is the main reason why forestry is common in Zonal Soils - Podzols?
Trees grow well despite high acidity
Why do Latosols have poor agricultural potential despite being located in tropical rainforests?
Leaching of silicate minerals but less soluble iron compounds remain
What is the characteristic of the A horizon in Zonal Soils - Latosols as a result of decomposed leaf litter?
High nutrient content
What is the primary reason why waterlogging occurs in Zonal Soils - Podzols?
'Hard pan' preventing water drainage
What is the primary reason for waterlogging in soil?
Pore spaces in the soil filled with water
Which erosion type involves the formation of mini streams on soil?
Rill erosion
What strategy is recommended to prevent wind erosion?
Contour ploughing
How does salinization occur in soil?
Rising water table drawing water to the surface
What is the main problem associated with structural deterioration of soil?
Clumping of clay particles due to salt content
Which soil issue is caused by water flow from low salinity areas to high salinity areas?
Salinization
Study Notes
Soil Characteristics
- Year-round plant growth resulting in a thick horizon is found in Andosols.
- Zonal Soils - Podzols have a common feature of acidic and nutrient-poor soil, making arable farming difficult.
- Forestry is common in Zonal Soils - Podzols due to the soils' ability to support coniferous trees.
- Latosols have poor agricultural potential despite being located in tropical rainforests because they are heavily leached and have low nutrient availability.
- The A horizon in Zonal Soils - Latosols is characterized by a thick layer of decomposed leaf litter, referred to as "humus-rich".
- Waterlogging occurs in Zonal Soils - Podzols primarily due to the soils' low permeability.
- The primary reason for waterlogging in soil is poor drainage.
- Rill erosion involves the formation of mini streams on soil.
- To prevent wind erosion, the recommended strategy is to maintain a vegetative cover, reduce tillage, and use windbreaks.
- Salinization occurs in soil when irrigation water containing high salt concentrations is used, leading to salt accumulation.
- The main problem associated with structural deterioration of soil is reduced soil fertility and lower crop yields.
- Salinization of soil is also caused by water flow from low salinity areas to high salinity areas.
Learn about the differences between zonal and azonal soils, including their characteristics, formation processes, and typical environments. Explore the distinct profiles of zonal soils like Podzols in temperate climates, and the immature features of azonal soils.
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