usable field capacity of soil (KLZ Soil Estimation)

Usable field capacity of the soil up to 100 cm profile depth is the amount of soil water in volume % or mm of water column that it can bind at a defined suction voltage between pF = 1.8 and pF = 4.2 or in pores with an equivalent diameter between 50 µm and 0.2 µm. The classification is carried out according to KA5, p. 349, tab 74. For soils where skeletons or solid rocks are at a lower depth, the data refer to the thickness of the soluum: Classification: very low < 6 vol.- %, low 6 to < 14 % vol.-%, average 14 to < 22 % vol., high 22 to < 30 % vol., very high >= 30 vol.-% (this range of values is not occupied on map).