Boron is commonly deficient in acid soils because chemical reactions under acid conditions make it less available for plant uptake.
Indicate whether the statement is true or false
Question 2
You are using pure limestone (CaCO3 ) to provide the calcium needed to exchange with acid cations in a soil with a maximum potential cation exchange capacity of 20 cmolc/kg. How many kg of this limestone would you need to add to a hectare furrow slice (2.0 106 kg) to reduce the percentage acid saturation from 40 to 10, assuming that all the calcium added exchanged with aluminum or hydrogen ions?
A) 12,000 B) 50,000 C) 20,000 D) 8,000 E) 6,000
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