Certified Crop Advisor Practice Exam 2025 – Complete Study Resource

Question: 1 / 400

Good structure in the subsoil improves _____________?

nutrient uptake

root elongation

Good structure in the subsoil primarily enhances root elongation. When the subsoil has a well-structured composition, it creates a conducive environment for roots to penetrate deeper into the soil layer. This improved structure typically signifies that the subsoil is crumbly and stable, offering less resistance to root growth. Roots need a balanced mix of air and moisture in the soil for optimal growth, and a well-structured subsoil allows for better exploration of nutrients and moisture at greater depths, facilitating healthier plant development.

While good structure in the subsoil can have positive effects on nutrient uptake and moisture retention, and can also improve aspects of soil aeration, these benefits are largely dependent on the ability of the roots to access those resources. Therefore, root elongation stands out as the most directly impacted factor, making it the most appropriate answer in this context.

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moisture retention

soil aeration

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