Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(6), 129-134 | DOI: 10.11118/actaun201260060129
Cellulose and cutisin decomposition in soil of Alopecuretum meadow
- Katedra pícninářství a trávníkářství, Česká zemědělská univerzita v Praze, Kamýcká 129, 165 21 Praha 6 - Suchdol, Česká republika
Plant litter decomposition is a fundamental process to ecosystem functioning regulated by both abiotic and biotic factors. The aim of this study was to determine the decomposition of cellulose and protein (cutisin) substrates on permanent Alopecuretum meadow under different methods of management. The treatments were following: 2 × cut, 2 × cut + NPK, 2 × mulch, 1 × cut, 1 × mulch (frequency of mowing per year) and no-treated plots. Cutting or mulching was carried out in October, under the 2 × cut management also in May. In 2007-2009, cellulose and cutisin in mesh bags were placed in the soil and kept from April to October. Total mean ratios of decomposed cellulose and cutisin were 83 % and 40 % of primal substrate weight, respectively. The cellulose decomposition was affected by weather conditions, but not by applied management. The highest mean ratio of decomposed cellulose was found in 2009 (with increased amount of precipitation in May and July), the lowest in 2007. Coefficients of variation within a year and over the years were up to 22 % and 20 %, respectively. The cutisin decomposition was significantly affected by applied management in all three years. Higher rates of decomposition were noted in two times mowed treatments compared to one or not mowed treatments. Significant differences were found between years in 2× cut and 2 × cut + NPK treatments. Coefficients of variation within the year and over the years were both higher by cutisin than by cellulose samples (up to 50 and 42 %, respectively).
Keywords: permanent grassland, protein decomposition, management, fertilization, mulching, frequency of mowing
Grants and funding:
This research was supported by S grant of the Ministry of Education, Youth and Sport of the Czech Republic and by project No. MSM 6046070901.
Received: July 16, 2012; Published: July 20, 2013 Show citation
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