Flashcards in Soils Deck (9)
A soil with 60% sand and 30% silt has what texture?
Could a soil with a Munsell Colour of 10YR 6/3 could change to a Munsell Colour of 10YR 3/3 by adding organic matter?
What does soil pH affect?
Microbial and faunal communities
Cycling of nutrients
Yield of crops
Iron gives soil its red colour. What would a change from Iron (III) [Fe3+] to Iron (II) [Fe2+] indicate?
The soil is anaerobic and greyer in colour.
What is the simplest definition of soil?
Must contain living matter.
When a soil has a pH of lower than 5, what two elects increase to toxic levels?
Aluminium and Manganese.
Organic matter breaks down in soil to form what?
Why are soil maps used?
To identify soils and their properties, determine the land drainage capabilities of an area and determine the suitability of soils for particular crop.