Biology Forums - Study Force

You are seeking a soil with high clay content but one that is not sticky when wet nor hard and cloddy when dry. In which of the following suborders would you most likely find this soil?
 
  A) Udert B) Ustox C) Cambids D) Aquands E) Ustalfs

Question 2

In which soil orders would recent alluvium most likely be a common parent material?
 
  A) Entisols B) Aridisols C) Alfisols D) Ultisols E) Andisols

Question 3

Which of the following categories of Soil Taxonomy provides the greatest specificity of soil properties?
 
  A) great group B) order C) family D) series E) suborder

Question 4

Ammonium fixation occurs to the greatest extent in the O and A horizons.
 
  Indicate whether the statement is true or false

Question 5

Which of the following would occur when lime is added to the surface of a soil at pH 6.0?
 
  A) The release of H+ ions from the exchange complex would help reduce the soil pH
  B) Aluminum toxicity would increase in the vicinity of the limestone.
  C) CO2 from root and microbial respiration would quickly solubilize the CaCO3 and increase its rate of downward movement
  D) Conservation tillage would increase the pH of the subsoil
  E) Earthworms would help move the limestone down into the soil profile.

Question 6

The primary means to avoid non-point source nitrogen and phosphorus pollution in agricultural watersheds is to avoid applications that bring the available supply of these nutrients in soils to amounts higher that can be used by crop plants.
 
  Indicate whether the statement is true or false

Content hidden