Question

what is hygroscopic water

Answer 1

hygroscopic water Water absorbed from the atmosphere and held very tightly by the soil particles, so that it is unavailable to plants in amounts sufficient for them to survive. Compare CAPILLARY MOISTURE. "hygroscopic water."

Answer 2

hygroscopic water forms very thin films around soil particles and is not available to the plant. The water is held so tightly by the soil that it can not be taken up by roots.