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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Aplinkos inžinerija / Environmental engineering (T004)
Author(s): Bakšienė, Eugenija;Ciūnys, Antanas
Title: Dredging of lake and application of sapropel for improvement of light soil properties
Other Title: Ežero valymas ir sapropelio naudojimas dirvožemio savybėms gerinti
Is part of: Journal of environmental engineering and landscape management. Vilnius : Technika., Vol. 20, No. 2(2012)
Extent: p. 97-103
Date: 2012
Keywords: Žemsiurbė;Sapropelis;Transportavimas;Dirvožemis;Cheminės savybės;Fizikinės savybės;Dredge;Sapropel;Transportation;Soil;Chemical properties;Physical properties
Abstract: Approx. 1.5 billion m3 of sapropel are accumulated in silty Lithuanian lakes. Sapropel is a valuable organic and limy matter, which can be used for fertilisation and soil improvement. Silted lakes usually require mechanical cleaning, i.e. removal of lake sapropel. Such cleaning was carried out in one of the lakes of Lithuanian – Lake Ilgutis: using a dredge, sapropel was extracted, dried in sediment bowls to 80–85% of humidity, carried to a field and insert into the soil. Summarised results of the long-term experiment showed that calcareous sapropel can reduce soil acidity and increase the amount of exchangeable bases (Ca+Mg). Under the influence of sapropel, the contents of organic carbon and total nitrogen increased as well. The results of investigations demonstrated that by the end of the second (after 12 years), third (after 18 years) and fourth (after 24 years) rotation, the effect of sapropel on soil chemical properties was positive. Compared with limestone, calcareous sapropel improved physical characteristics of the soil to a greater extent
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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