Temat: field water capacity - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Spatial characteristic of hydro-physical properties in arable mineral soils in Poland as illustrated by field water capacity [FWC]
Autorzy:: Walczak, R.
Ostrowski, J.
Witkowska-Walczak, B.
Slawinski, C.
Powiązania:: https://bibliotekanauki.pl/articles/26253.pdf
Data publikacji:: 2002
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: mineral soil
field water capacity
Polska
hydrophysical property
soil
Źródło:: International Agrophysics; 2002, 16, 2
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Impact of marble powder amendment on hydraulic properties of a sandy soil
Autorzy:: Farhadi-Machekposhti, M.
Valdes-Abellan, J.
Pla, C.
Benavente, D.
Pachepsky, Y.
Powiązania:: https://bibliotekanauki.pl/articles/2082885.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: saturated hydraulic conductivity
soil water
retention curve
field capacity
plant available water
pore size
distribution
Opis:: Marble powder is one of carbonate rock amendments that is used to improve soil reaction. We hypothesized that the powdered marble addition can cause favorable changes in hydraulic properties of sandy soils. Six levels of marble powder addition to an aridisol soil (0%; M0; 5%; M5; 10%; M10; 15%; M15; 20%; M20 and 25%, M25; by bulk volume) were analyzed in triplicate. The saturated hydraulic conductivity and soil water retention curves were obtained. Pore space properties were investigated using soil water retention curves, mercury intrusion porosimetry and scanning electron microscopy. The saturated hydraulic conductivity significantly decreased (between 83 and 97% for M5 and M25 respectively) and parameters α and n of the van Genuchten model significantly decreased in marble-amended soils. Both field capacity and permanent wilting point increased with the addition of marble powder. Plant-available water, increased significantly until 10% of marble powder application; higher percentages of application did not provide additional significant changes in the plant-available water. Pore space distributions from soil water retention curves parameters showed an increase in the pore size range and a decrease in the average pore size; pore space distribution from the scanning electron microscopy also showed the presence of a new family of dominant pore sizes which was not detected by the soil water retention curves parameters approach. It was concluded that the addition of marble powder can improve the ability of soil to store water providing an advantage for irrigation water management in water scarce environments. Further research will have to address the impact of marble powder amendment under field semi-arid conditions.
Źródło:: International Agrophysics; 2020, 34, 2; 223-232
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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