What soil pH range is generally optimal for clover growth?

• A. Below 5.5.
• B. Above 7.5.
• C. About 6.0 to 7.0.
• D. About 5.0 to 6.0.

Answer: (C)

Clover grows best when the soil is near neutral, around 6.0 to 7.0. This pH range supports strong root development, optimal nutrient availability, and effective nitrogen fixation by the rhizobia in clover nodules. When the pH is too low (below about 5.5), aluminum and manganese can become toxic, nutrient uptake suffers, and nodulation drops off. If the pH is too high (above about 7.5), essential micronutrients like iron and manganese become less available, leading to deficiencies and weaker growth. While clover can tolerate mildly acidic conditions, the range of 6.0 to 7.0 is generally the most favorable for consistent, robust growth.