How does the amount of lime needed to neutralize the residual acidity in a clay loam soil compare to that needed to neutralize the active acidity in that soil?
A) residual requires about the same
B) residual requires 5,000 times greater
C) residual requires 10 times greater
D) residual requires considerably less
E) residual requires about double
Question 2
The drainage of certain wetlands has resulted in extreme soil acidity. This is due primarily to which of the following processes that take place when the soil is drained?
A) reduction of iron to low valent states that stimulate acidity
B) oxidation of organic materials to produce organic acids
C) release of nitric acid due to oxidation of nitrogen compounds
D) high redox potential characteristic of aerated soils
E) oxidation of sulfur-bearing minerals that produces sulfuric acid
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