References
- Jodaugiene , D. , Motuzas , A. , Stancevičius , A. and Raudonius , S. 2001 . Different soil tillage and humus quality, clay fraction content and its organic and mineral composition in Endohypogleic–Eutric Planasols . Agr. Sci. , 4 : 3 – 11 . (in Lithuanian with English summary)
- Slepetiene , A. and Slepetys , J. 2005 . Status of humus in soil under various long-term tillage systems . Geoderma , 127 : 207 – 215 .
- Reicosky , D. C. 1994 . “ Crop residue management: soil, crop, climate interaction ” . In Crop Residue Management , Edited by: Hatfield , J. L. and Stewart , B. A. Boca Raton, FL : Lewis Publisher .
- Schlesinger , W. H. 1999 . Carbon sequestration in soils . Science , 284 : 2095
- Rojkov , V. , Konjushkov , D. and Kogut , B. 2002 . Distribution of the reserves of organic matter in the soil cover of Russia Thailand 17th WCSS Symposium
- Ellerbrock , R. H. , Höhn , A. and Rogasik , J. 1997 . “ Influence of management practice on soil organic matter composition ” . In The Role of Humic Substances in the Ecosystems and in Environmental Protection , Edited by: Drozd , J. , Gonet , S. S. , Senesi , N. and Weber , J. 233 – 238 . Wroclaw, , Poland : IHSS – Polish Society of Humic Substances . Zaklad Poligraficzny Abedik
- Ellerbrock , R. H. , Höhn , A. and Rogasik , J. 1999 . Functional analysis of soil organic matter as affected by long-term manurial treatment . Eur. J. Soil Sci. , 50 : 65 – 71 .
- Evans , J. L. , Fernandez , I. J. , Rustad , L. E. and Norton , S. A. 2001 . Methods for evaluating carbon fractions in forest soils: a review . Maine AES Tech. Bull. , 178 : 3 – 27 .
- West , T. O. and Post , W. M. 2002 . Soil organic carbon sequestration rates by tillage and crop rotation. A global data analysis . Soil Sci. Soc. Am. J. , 66 : 1930 – 1946 .
- Michnovskaja , A. D. , Kiritchenko , T. P. and Suleimanova , D. G. 1986 . Effect of soil tillage methods on the microbiological processes, content and quality of organic matter in Chernozems Lesostepi of Ukraine . Res. Works AAS Leningrad , (in Russian)
- Angers , D. A. 1998 . Water-stable aggregation of Québec silty clay soils: some factors controlling its dynamics . Soil Till. Res. , 47 ( 1–2 ) : 91 – 96 .
- Martens , D. A. 2000 . Plant residue biochemistry regulates soil carbon cycling and carbon sequestration . Soil Biol. Biochem. , 32 : 361 – 369 .
- Arshad , M. A. , Schnitzer , M. , Angers , D. A. and Ripmeester , J. A. 1990 . Effect of till vs no-till on the quality of soil organic matter . Soil Biol. Biochem. , 22 : 595 – 599 .
- Novitskii , M. V. and Ilyushchenko , V. A. 1997 . The content and composition of labile humus in the soddy-podzolic loamy sands as dependent on the degree of agricultural development . Agr. Chem. (Agrokhimiya) , 1 ( 2 ) : 165 – 169 .
- Jankauskas , B. , Jankauskienė , G. , Fullen , M. A. , Booth , C. A. and Slepetiene , A. 2009 . Soil organic matter changes in Lithuanian soils: experiences and results . Zemdirbyste-Agriculture , 96 ( 1 ) : 85 – 97 .
- Poulton , P. R. 1996 . The Rothamsted long-term experiments: are they still relevant? . Can. J. Plant Sci. , 6 : 559 – 571 .
- Orlov , D. S. 1990 . Humus Acids of Soils and General Humification Theory , Moscow : Moscow University Press . (in Russian)
- Orlov , D. S. and Grishina , L. A. 1981 . Practical Manual of Humus Chemistry , Moscow : Moscow University Press . (in Russian)
- Olk , D. C. 2006 . A chemical fractionation for structure–function relations of soil organic matter in nutrient cycling . Soil Sci. Soc. Am. J. , 70 : 1013 – 1022 .
- Mahieu , N. , Olk , D. C. and Randall , E. W. 2002 . Multinuclear magnetic resonance analysis of two humic acid fractions from lowland rice soils . J. Environ. Qual. , 31 : 421 – 430 .
- Slepetiene , A. and Simanskaite , D. 2005 . The relationship between the components of humic substances in the soil and crops grown , 59 – 60 . Riga : University of Latvia . 10th Nordic IHSS Symposium on ‘Character of natural organic matter and its role in the environment,’
- Arlauskienė , A. and Maikštėnienė , S. 2001 . Biological value of leguminous plants as preceding crops in the agocenosis . Agr. Sci. , 1 : 22 – 30 . (in Lithuanian with summary in English)
- Andrzejewska , J. and Ignaczak , S. 2001 . Effectiveness of symbiosis between fodder galega (Galega orientalis Lam.) and Rhizobium galegae on fallow land . Electron. J. Pol. Agr. Uni. , 4 ( 2 ) : 1 – 23 .
- Álvaro-Fuentes , J. , López , M. V. , Cantero-Martinez , C. and Arrúe , J. L. 2008 . Tillage effects on soil organic carbon fractions in Mediterranean dryland agroecosystems . Soil Sci. Am. J. , 72 : 541 – 547 .
- von Lützow , M. , Leifeld , J. , Kainz , M. , Kögel-Knabner , I. and Munch , J. C. 2002 . Indication for soil organic matter quality in soils under different management . Geoderma , 105 ( 3–4 ) : 243 – 258 .
- Parr , J. F. and Papendick , R. I. 1978 . “ Factors affecting the decomposition of crop residues by microorganisms ” . In Crop Residue Management Systems , Edited by: Oschwald , W. R. 101 – 129 . Madison, WI : American Society of Agronmy .
- Smith , P. 2004 . Carbon sequestration in cropland: the potential in Europe and the global context . Eur. J. Agron. , 20 ( 3 ) : 229 – 236 .
- FAO/UNESCO . 1997 . Soil map of the world revised legend with corrections and updates 1 – 140 . Technical Paper 20. ISRIC Wageningen
- Egner , H. , Riem , H. and Domingo , W. R. 1960 . Untersuchungen über die chemische Bodenanalyse als Grundlage für Beurteilung der Nährzustandes der Böden . Ann. R. Agr. College Sweden , 26 : 199 – 215 .
- Nikitin , B. A. 1999 . Methods for soil humus determination . Agr. Chem. (Agrokhimiya) , 3 ( 2 ) : 156 – 158 .
- Olk , D. C. , Brunetti , G. and Senesi , N. 2000 . Decrease in humification of organic matter with intensified lowland rice cropping: a wet chemical and spectroscopic investigation . Soil Sci. Soc. Am. J. , 64 : 1337 – 1347 .
- Olk , D. C. , Brunetti , G. and Senesi , N. 1999 . Organic matter in double-cropped lowland rice soils: chemical and spectroscopic properties . Soil Sci. , 164 : 633 – 649 .
- Ponomareva , V. V. and Plotnikova , T. A. 1980 . Humus and Soil Formation , Nauka : Leningrad . (in Russian)
- Schulz , E. and Körschens , M. 1998 . Characterization of the decomposable part of soil organic matter and transformation processes by hot water extraction . Eurasian Soil Sci. , 31 : 809 – 813 .
- Krasiukov , V. N. and Lapin , I. A. 1998 . Method of humic substances determination in natural waters Description of invention SU 1385041, (in Russian)
- OMNIC v7.3 Release Notes. Thermo electron. Updated for service Pack 1 . Available at: www.mmrc.caltech.edu/FTIR/Nicolet Software/Nicolet/ReleaseNotes/OMNIC Release Notes.pdf (accessed 1 June 2010)
- Velykis , A. , Satkus , A. and Slepetiene , A. 2005 . Effect of biologization of agriculture and means of sustainability on soil organic matter changes . Latvijas Universitatis Raksti (Acta Universitatis Latviensis) , 692 : 165 – 174 .
- Slepetys , J. 2007 . Long term swards for ecological farming. Scientific report . Akademija , : 1 – 39 .
- Chefetz , B. , Ilani , T. , Schulz , E. and Chorover , J. 2006 . Wastewater dissolved organic matter: characteristics and sorptive capabilities . Water Sci. Technol. , 53 ( 7 ) : 51 – 57 .
- Persson , H. 1978 . Root dynamics in a young Scot's pine in Central Sweden . Oikos, , 630 : 508 – 519 .