Soil water that is available for root absorption at field capacity is

Assessment: WAEC SSCE - Agricultural Science - 2011 (Objective) Subject: Agricultural Science

Question 1 Report

Soil water that is available for root absorption at field capacity is
Answer Details
The soil water that is available for root absorption at field capacity is capillary water. Capillary water is held in the soil pores by capillary forces and is available for plant roots to absorb. At field capacity, the soil is filled with water and excess water has drained away, leaving capillary water in the soil pores. Hygroscopic water is bound too tightly to the soil particles to be available to plants, gravitational water drains quickly out of the soil, and superfluous water is water that exceeds the soil's holding capacity and can lead to waterlogging.
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