What is the range of water content at which a soil is considered to be at field capacity?

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50% to 75%

25% to 50%

0% to 25%

75% to 100%

answer is D.

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Detailed Solution

The range of water content at which a soil is considered to be at field capacity varies depending on the soil texture and structure.

However, generally speaking, the soil is considered to be at field capacity when it has reached its maximum water-holding capacity after excess water has drained away. At this point, the soil is fully saturated with water and plant roots can extract water from it easily.

For sandy soils, field capacity is typically around 25% to 30% water content by volume. For loam soils, field capacity is typically around 50% water content by volume. For clay soils, field capacity can be as high as 60% to 70% water content by volume.

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