Some irrigation systems have stimulated the formation of saline and saline-sodic soils. Which of the following contributes to this process?
A) high Ca and Mg contents in the irrigation water
B) high contents of sulfates and chlorides in the irrigation water
C) low pH of the irrigation water
D) the low sodium adsorption ratio in the irrigation water
E) inadequate drainage systems to remove soluble salts
Question 2The final cover on any type of landfill should consist of soil material with rapid permeability and a high rate of infiltration.
Indicate whether the statement is true or false
Question 3The radionuclide Cesium-137 behaves in soils much like the element potassium.
Indicate whether the statement is true or false
Question 4A homeowner in New Mexico attempted to grow azaleas in a well-drained soil (pH 7.5), but the plants were stunted and the leaves were yellow. What is the most likely cause of this constraint?
A) Na toxicity B) Mn toxicity C) Ca toxicity D) Fe deficiency E) P deficiency
Question 5Draining a chromium-contaminated wetland would be likely to immobilize the metal so that environmental chromium toxicity problems would be minimized.
Indicate whether the statement is true or false
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