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Featured researches published by Åsa Myrbeck.


Acta Agriculturae Scandinavica Section B-soil and Plant Science | 2014

Effect of time of autumn primary tillage on soil structure, grain yield and risk of nitrogen leaching in two Swedish clay soils

Åsa Myrbeck; Johan Arvidsson; Thomas Keller

Delaying tillage and incorporation of arable crop residues in autumn may limit accumulation of soil mineral nitrogen (SMN) and reduce nitrogen (N) leaching. However, on clay soils, high water content during late tillage can impair soil structure and fertility. This study investigated the effects of tillage timing on SMN (0–90 cm depth), soil physical properties in the topsoil and yield in two Swedish clay soils differing in clay content. SMN generally increased during autumn and also with earlier tillage. On a heavy clay soil (Ultuna; ∼60% clay), SMN increased throughout winter until spring and the amount of N leached was probably small. In contrast, on a clay loam soil in southernmost Sweden (Rydsgård; ∼35% clay), SMN decreased during winter by up to 26 kg ha−1. In general, measured soil water content (w) was lower than 0.9 × plastic limit (PL) at the time of early tillage (mouldboard ploughing or stubble cultivation), while it exceeded 0.9 PL at the time of normal and late tillage. The proportion of small aggregates produced by tillage was negatively correlated to relative soil water content at the time of tillage (w/PL). Conventional methods to determine soil physical qualities (bulk density, saturated hydraulic conductivity, aggregate tensile strength) did not show any clear differences between treatments. However, plant emergence and yield were significantly reduced after late compared with early tillage at Ultuna, a trend that has persisted from 2000 until the present. These results suggest that the suitability of delayed autumn tillage as a means to reduce SMN accumulation and N leaching varies between Swedish clay soils. A reduction in N leaching can be achieved on lighter clay soils in warmer and moister areas, whereas the effects may be small on heavier clay soils in central Sweden, where repeated late tillage carries a risk of yield reduction.


Soil Use and Management | 2002

A review of farm‐scale nutrient budgets for organic farms as a tool for management of soil fertility

C.A. Watson; H. Bengtsson; M. Ebbesvik; A.K. Loes; Åsa Myrbeck; E. Salomon; J.J. Schröder; E.A. Stockdale


Soil & Tillage Research | 2002

A review of research on seedbed preparation for small grains in Sweden

Inge Håkansson; Åsa Myrbeck; Ararso Etana


Geoderma Regional | 2015

Effect of perennial ryegrass cover crop on soil organic carbon stocks in southern Sweden

Christopher Poeplau; Helena Aronsson; Åsa Myrbeck; Thomas Kätterer


European Journal of Agronomy | 2012

Effects of autumn tillage of clay soil on mineral N content, spring cereal yield and soil structure over time

Åsa Myrbeck; Maria Stenberg; Johan Arvidsson; Tomas Rydberg


Soil & Tillage Research | 2012

Establishment of winter wheat—Strategies for reducing the risk of nitrogen leaching in a cool-temperate region

Åsa Myrbeck; Maria Stenberg; Tomas Rydberg


Soil Use and Management | 2014

Changes in N leaching and crop production as a result of measures to reduce N losses to water in a 6-yr crop rotation

Åsa Myrbeck; Maria Stenberg


Archive | 2005

Inverkan av tidig och sen jordbearbetning under hösten på kvävemineraliseringen under vinterhalvåret och på utlakningsrisken på en lerjord

Maria Stenberg; Åsa Myrbeck; Börje Lindén; Tomas Rydberg


Archive | 2012

29 Ploughless Tillage in Long- and Short-term Experiments

Johan Arvidsson; Ararso Etana; Åsa Myrbeck; Tomas Rydberg


Archive | 2003

Plöjningstidpunktens inverkan på markstruktur, växtproduktion och kväveutlakning på lerjord

Åsa Myrbeck; Johan Arvidsson; Thomas Keller

Collaboration


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Maria Stenberg

Swedish University of Agricultural Sciences

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Tomas Rydberg

Swedish University of Agricultural Sciences

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Johan Arvidsson

Swedish University of Agricultural Sciences

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Ararso Etana

Swedish University of Agricultural Sciences

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Börje Lindén

Swedish University of Agricultural Sciences

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Helena Aronsson

Swedish University of Agricultural Sciences

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Johanna Wetterlind

Swedish University of Agricultural Sciences

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Thomas Keller

Swedish University of Agricultural Sciences

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Christopher Poeplau

Swedish University of Agricultural Sciences

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Göran Bergkvist

Swedish University of Agricultural Sciences

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