Which of the following is a sign of an imbalanced soil nutrient profile?

An imbalanced soil nutrient profile can significantly affect plant health and development. Poor plant growth accompanied by yellowing leaves is a classic indicator of nutrient deficiency or toxicity. When soil lacks essential nutrients like nitrogen, for instance, it can lead to chlorosis, where leaves turn yellow due to insufficient chlorophyll production. This condition often arises from imbalance, particularly if there's an excess of other nutrients that may inhibit the uptake of crucial ones.

In contrast, vibrant green leaves typically signify sufficient nutrient availability, consistent flowering patterns indicate a balanced nutrient environment conducive to reproductive success, and sturdy root development reflects healthy nutrient absorption and uptake. Therefore, the presence of poor growth and yellowing leaves stands out as a clear sign of an issue related to the soil's nutrient profile.