Which soil condition is most likely to inhibit root growth?

Soil compaction is a condition that significantly limits root growth due to the increased density and reduced porosity of the soil. When soil particles are packed closely together, the space between them, which normally allows for air and water movement, diminishes. This results in restricted root expansion and limits the ability of roots to access necessary oxygen and moisture.

Roots require certain amounts of air and space to grow and function properly. In compacted soils, roots may struggle to penetrate the ground, and their growth may be stunted, leading to poor plant health and reduced nutrient uptake. Therefore, addressing soil compaction through practices such as tilling or aeration can greatly improve root development and overall crop performance.