Nauka Przyroda Technologie

2014 volume 8 issue 1 #4

Michał Kozłowski, Jolanta Komisarek

Deficiencies of readily plant available water in selected Albeluvisols in central Wielkopolska

Summary.

This study presents the results of research on the deficiencies of water content in the Albeluvisols within central Wielkopolska during 2009-2011. The objective was to determine the soil water deficiencies in relation to the lower limit of plant available water (LLPAW) calculated at a matric potential of –31 kPa (LLPAW31), –49 kPa (LLPAW49), –59 kPa (LLPAW59) and –88 kPa (LLPAW88). The research results indicate that crop water deficiency and the depth of soil drying up were mainly determined by the rainfall. During periods of vegetation the strongest and deepest drying up was observed in 2011. In this year, in the Stagnic Albeluvisols at a depth of about 70 cm the soil matric potential of –59 kPa was observed, while in Gleyic Albeluvisols, a depth of 60 cm was also observed. The highest soil water deficiencies were observed from the third decade in May to the second decade in July. These deficiencies in 100 cm thickness were 7 mm, 19 mm, 25 mm and 40 mm, in relation to LLPAW88, LLPAW59, LLPAW49 and LLPAW31 respectively. Considering the 30 cm soil thickness, the water deficiencies were noted from the third decade in April to the second decade in July. In the analysed Albeluvisols, the calculated average soil matric potential depth equal to the field capacity was about 65-70 cm in 2011, whereas in 2009 and 2010 it was 50-55 cm.

Key words: Albeluvisols, soil water deficiencies, soil water matric potential

Full text available in English in Adobe Acrobat format:
https://www.npt.up-poznan.net/pub/art_8_4.pdf

Streszczenie w języku polskim:
https://www.npt.up-poznan.net/tom8/zeszyt1/streszczenie-4.html

Corresponding address:
Michał Kozłowski
Katedra Gleboznawstwa i Rekultywacji
Uniwersytet Przyrodniczy w Poznaniu
ul. Piątkowska 94
60-649 Poznań
Poland
e-mail: mkozl@up.poznan.pl

Accepted for print: 29.11.2013