Hysteresis effect of water retention curves for different aggregates of mineral [Haplic Luvisol] and organic [Gleyic Phaeozem] soils

• Autorzy: Witkowska-Walczak B
• Języki publikacji: EN

Abstrakty

EN

The results of studies on the hysteresis effect of water retention curves of mineral and organic soils showed that Gleyic Phaeozem aggregates are characterized with a greater ability to retain water than are Haplic Luvisol aggregates. The highest values of moisture differences were noticed for 0.5-1 mm Gleyic Phaeozem aggregates at low soil water potential. The effect of hysteresis was small for aggregates of 3-5 and 5-10 mm in the whole range of the soil water potential and for pF higher than 1 for aggregates bigger than 0.5 mm. The maximum surfaces of the hysteresis loop were noticed for 0.5-1 and 0.25-0.5 mm aggregates of Gleyic Phaeozem and these were about 2.5 times higher than those for the aggregates of Haplic Luvisol.

PL

Słowa kluczowe

EN

moisture; soil structure; plant development; control; Haplic Luvisol; plant growth; water capacity; mineral soil; soil density; soil water; organic soil; hysteresis effect; water retention; aggregate; water content

• Wydawca: -
• Czasopismo: Polish Journal of Soil Science
• Rocznik: 2003
• Tom: 36
• Numer: 1
• Opis fizyczny: p.13-19,fig.,ref.

Twórcy

autor

Witkowska-Walczak B

• Polish Academy of Sciences, Doswiadczalna 4, P.O.Box 201, 20-290 Lublin, Poland