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Effect of liming on the dynamics of water-stable aggregates and organic carbon in moraine loam soil  [2015]

Karcauskiene, D., Lithuanian Research Centre for Agriculture and Forestry, Vezaiciai, Klaipeda distr. (Lithuania). Vezaiciai Branch; Jokubauskaite, I., Lithuanian Research Centre for Agriculture and Forestry, Vezaiciai, Klaipeda distr. (Lithuania). Vezaiciai Branch; Repsiene, R., Lithuanian Research Centre for Agriculture and Forestry, Vezaiciai, Klaipeda distr. (Lithuania). Vezaiciai Branch; Ambrazaitiene, D., Lithuanian Research Centre for Agriculture and Forestry, Vezaiciai, Klaipeda distr. (Lithuania). Vezaiciai Branch; et al.

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The paper summarises the data of field and laboratory trials made in Lithuania (Vezaiciai Branch of Lithuanian Research Centre for Agriculture and Forestry) during the period of 1996-2013. The effect of liming with different intensity (at a rate 0.5 every 7 years and 2.0 every 3-4 years) was investigated in the topsoil of acid moraine loam Bathygleyic Dystric Glossic Retisol on the dynamics of water-stable aggregates and organic carbon. Data showed that systematic liming over 56 years (1949-2005) affected the structure of moraine loam soil. The largest amount (68.4-72.1%) of water stable aggregates (is greater than 0.25mm) was determined in the relatively most intensively limed soil when perennial grasses and winter wheat were grown in 2002-2003. During the study period the decrease of water-stable aggregates was appointed in both soil backgrounds: acid (from 57% to 25%) and limed (from 72% to 29%) soil. These data suggest that the climatic conditions (swelling clay under warm and wet conditions in autumn-winter periods and drying and rewetting cycles in spring/summer periods) have a substantial negative effect on the aggregates formation. The effect of systematic soil liming on the distribution of soil organic carbon and its fractional composition was evaluated. Study showed that periodical liming decreased the amount of organic carbon in the soil. Soil organic carbon amount was approximately by 0.11-0.18 percentage points lower compared to the unlimed pl
ots (1.44%). Periodical liming significantly decrease the content of humic and fulvic acids and dissolved organic carbon content, as one of labile fractions of soil organic carbon. Fulvic acids was dominated in the soil in all treatments, that could be associated with a slow humification processes in the soil.

Información bibliográfica

Idioma:
English
Tipo:
Conference
En AGRIS desde:
2016
Página inicial:
195
Página final:
200
Editorial:
NJF Latvia
ISBN:
978-9934-14-548-3
Todos los títulos:
"Effect of liming on the dynamics of water-stable aggregates and organic carbon in moraine loam soil"@eng
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Información bibliográfica

Idioma:
English
Tipo:
Conference
En AGRIS desde:
2016
Página inicial:
195
Página final:
200
Editorial:
NJF Latvia
ISBN:
978-9934-14-548-3
Todos los títulos:
"Effect of liming on the dynamics of water-stable aggregates and organic carbon in moraine loam soil"@eng