Water stability of soil aggregates in different systems of tillage

Jaroslava Bartlová, Barbora Badalíková, Lubica Pospíšilová, Eduard Pokorný and Bořivoj Šarapatka
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Jaroslava Bartlová: Agricultural Research, Ltd., Troubsko, Czech Republic
Barbora Badalíková: Agricultural Research, Ltd., Troubsko, Czech Republic
Lubica Pospíšilová: Mendel University in Brno, Brno, Czech Republic
Eduard Pokorný: Mendel University in Brno, Brno, Czech Republic
Bořivoj Šarapatka: Palacky University Olomouc, Olomouc, Czech Republic

Soil and Water Research, 2015, vol. 10, issue 3, 147-154

Abstract: The influence of various agrotechnical measures on macrostructural changes in topsoil and subsoil was studied in the course of a four-year experiment. Macrostructure was evaluated according to the ability of soil aggregate to resist degradation. Three variants of soil tillage were established: ploughing to a depth of 0.22 m, reduced tillage (subsoiling to 0.35-0.40 m, and shallow disking of soil to a depth of 0.15 m). For observation, three locations were chosen in various production areas of the Czech Republic with differing soil and climatic conditions. In these locations crops were grown under the same crop rotation: rapeseed (Brassica napus L.), wheat (Triticum aestivum L.), maize (Zea mays), wheat (Triticum aestivum L.), and barley (Hordeum vulgare). After four years of different tillage, a change in the water stability of soil aggregates (WSA) was evident. It was found out that reduced tillage of soil positively influenced both the WSA and the yield of the crops grown. A relationship of positive dependence between WSA, the content of humus substances, and cation exchange capacity of soil was also found. According to the obtained results, for agricultural practice a classification scale of structural quality was proposed on the basis of statistics of one variable (average, its mean error and distribution normality).

Keywords: conventional tillage; shallow disking; soil structure; subsoiling; water-stable aggregates; yield (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlswr:v:10:y:2015:i:3:id:132-2014-swr

DOI: 10.17221/132/2014-SWR

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