Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/86263
Type of publication: research article
Type of publication (PDB): Straipsnis kitose duomenų bazėse / Article in other databases (S4)
Field of Science: Mechanikos inžinerija / Mechanical Engineering (T009)
Author(s): Šarauskis, Egidijus;Masilionytė, Laura;Kriaučiūnienė, Zita;Romaneckas, Kęstutis
Title: Influence of combined drill coulters on seedbed compaction under conservation tillage technologies
Is part of: World Academy of Science, Engineering and Technology. , Iss. 78 (2013)
Extent: p. 1499-1502
Date: 2013
Keywords: Coulters design;Seedbed;Soil hardness;Combined coulters;Soil compaction
Abstract: All over the world, including the Middle and East European countries, sustainable tillage and sowing technologies are applied increasingly broadly with a view to optimizing soil resources, mitigating soil degradation processes, saving energy resources, preserving biological diversity, etc. As a result, altered conditions of tillage and sowing technological processes are faced inevitably. The purpose of this study is to determine the seedbed topsoil hardness when using a combined sowing coulter in different sustainable tillage technologies. The research involved a combined coulter consisting of two dissected blade discs and a shoe coulter. In order to determine soil hardness at the seedbed area, a multipenetrometer was used. It was found by experimental studies that in loosened soil, a combined sowing coulter equally suppresses the furrow bottom, walls and soil near the furrow; therefore, here, soil hardness was similar at all researched depths and no significant differences were established. In loosened and compacted (double-rolled) soil, the impact of a combined coulter on the hardness of seedbed soil surface was more considerable at a depth of 2mm. Soil hardness at the furrow bottom and walls to a distance of up to 26mm was 1.1MPa. At a depth of 10mm, the greatest hardness was established at the furrow bottom. In loosened and heavily compacted (rolled for 6 times) soil, at a depth of 2 and 10mm a combined coulter most of all compacted the furrow bottom, which has a hardness of 1.8MPa. At a depth of 20mm, soil hardness within the whole investigated area varied insignificantly and fluctuated by around 2.0MPa. The hardness of furrow walls and soil near the furrow was by approximately 1.0MPa lower than that at the furrow bottom
Internet: https://hdl.handle.net/20.500.12259/86263
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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