FFA Floriculture Practice Test

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Study for the FFA Floriculture Test. Access flashcards and multiple-choice questions for thorough preparation. Each question includes hints and explanations. Prepare to excel in your exam!

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To lower the pH of soil, which material should be used?

Compost
Quicklime
Sulfur
Gypsum

The correct answer is: Sulfur

To lower the pH of soil, sulfur is the most effective material to use. When sulfur is added to soil, bacteria in the soil convert it into sulfuric acid through a process of oxidation. This acidification process leads to a decrease in soil pH, making the soil more acidic. Many plants, particularly acid-loving species like blueberries and azaleas, thrive in such conditions. Compost typically helps to improve soil structure and nutrient content rather than significantly affecting pH. Quicklime, which contains calcium oxide, actually raises soil pH by adding calcium, making it more alkaline. Gypsum is used to improve soil structure and drainage but does not significantly alter pH levels. Therefore, sulfur is the preferred choice for effectively lowering soil pH.