What total AWHC value results from 10 inches of medium soil and 26 inches of fine soil?

Prepare for the Pennsylvania Envirothon Soil Test with multiple choice questions and detailed explanations. Boost your soil science knowledge and ace your test!

In determining the total Available Water Holding Capacity (AWHC) from medium and fine soils, it is important to understand how AWHC is influenced by soil texture. Medium soils typically have a moderate capacity to hold water, whereas fine soils tend to have a higher capacity due to their smaller particle size, which allows greater retention of moisture.

When calculating AWHC, one generally combines the capacities of the different types of soils. Medium soils generally have an AWHC value in the moderate range—neither too high nor too low. Fine soils typically exhibit a higher AWHC value. When you combine 10 inches of medium soil with 26 inches of fine soil, you achieve a comparatively higher total AWHC overall because of the greater depth of fine soil.

Therefore, the result from the combination of these soil types leans toward a higher total AWHC value due to the presence of a more substantial amount of fine soil, which contributes significantly to moisture retention. The choice of "Medium" reflects an understanding of how AWHC works in this context, as it likely summarizes the results of the total recorded capacity, balancing the characteristics of both medium and fine soils. This interpretation helps clarify the outcome when dealing with soil water retention

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