Which condition is likely to occur in poorly aerated soil?

In poorly aerated soil, root suffocation is the most likely condition to occur. This situation arises because roots require oxygen for respiration, which is vital for energy production and overall plant health. When the soil is poorly aerated—typically due to compaction or excessive water saturation—the available oxygen is limited. This can lead to a condition known as hypoxia, where the roots cannot obtain enough oxygen. As a result, the plant's ability to take up nutrients and water is severely impeded, leading to stress and potential death.

The other options, while they may relate to soil conditions, do not accurately describe the primary issue with poorly aerated soil. For instance, increased plant growth often requires good aeration and sufficient access to nutrients, which is compromised in poorly aerated conditions. High nutrient absorption is also unlikely in such soils because root systems are hindered by a lack of oxygen, which can disrupt physiological processes. Low pH levels, while potentially resulting from specific soil types or conditions, are not a direct consequence of poor aeration itself. Therefore, root suffocation stands out as the primary issue in poorly aerated soils.