HORTICULTURE SCIENCE
FLORICULTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Correcting high pH can be achieved by ____
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using high-ammonium fertilizer combined with low alkalinity
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using a low-ammonium fertilizer combined with high alkalinity
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applying potassium bicarbonate
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drenching soil with flow-able lime
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Explanation:
Detailed explanation-1: -Applying certain fertilizers, such as ammonium-containing nitrogen fertilizers like ammonium sulfate, urea or ammonium sulfate, can help maintain acid soil conditions, but these fertilizers will probably not be effective in significantly reducing soil pH.
Detailed explanation-2: -Nitrate-based fertilizers have no acidification potential and actually can increase soil pH as one H⁺ ion is absorbed by the plant (or OH⁻ excreted) in the uptake of nitrate. In high pH soils (pH >7.2), dissociation of H+ ion from the H₂PO₄⁻ molecule will generate some acidity.
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