You want to grow a plant that prefers neutral pH in a limestone soil. What should you add to the soil to improve plant growth?
A) aluminum hydroxide [AlOH)3 + 2H+ -AlOH)2+ + 2H2O]
B) potassium nitrate KNO3 -K+ + NO3- )
C) sulfur S + H2O + 3/2 O2 -2 H+ + SO42- )
D) calcium carbonate CaCO3 + H2O -HCO3- + Ca2+ + OH- )