Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Johan Arvidsson"'
Autor:
Karina Maria Vieira Cavalieri, Álvaro Pires da Silva, Johan Arvidsson, Cássio Antonio Tormena
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 33, Iss 3, Pp 477-485 (2009)
O objetivo deste estudo foi avaliar os efeitos de diferentes cargas mecânicas de máquinas sobre as propriedades físicas de um Cambissolo Háplico classe textural franco-arenoso/franco-argilo-arenoso. A distribuição das pressões (kPa) no solo fo
Externí odkaz:
https://doaj.org/article/ea1560e452204ce5b0ea3cf2c69a6e69
Autor:
Thomas Keller, Johan Arvidsson
Publikováno v:
Soil and Tillage Research. 155:116-123
Rubber-tracked vehicles are becoming increasingly popular in agriculture. Rubber-tracked undercarriage systems are typically fitted instead of tyres on heavy agricultural vehicles, with the aim of e.g. decreasing soil stress and soil compaction risks
Publikováno v:
Acta Agriculturae Scandinavica, Section B — Soil & Plant Science. 66:247-258
Average yield of maize (Zea mays L.) in Mozambique is low, mainly due to low use of inputs in agriculture, high seasonal rainfall variability and inadequate soil preparation. A study conducted in t...
Autor:
Johan Arvidsson, Karina Maria Vieira Cavalieri, Matthias Stettler, Thomas Keller, Cássio Antonio Tormena, A. P. da Silva, Neyde Fabíola Balarezo Giarola
Publikováno v:
Soil Use and Management. 31:321-329
Soil compaction impacts growing conditions for plants: it increases the mechanical resistance to root growth and modifies the soil pore system and consequently the supply of water and oxygen to the roots. The least limiting water range (LLWR) defines
Publikováno v:
Journal of Plant Nutrition and Soil Science. 178:189-198
Several previous field studies in temperate regions have shown decreased soil respiration after conventional tillage compared with reduced or no-tillage treatments. Whether this decrease is due to differences in plant residue distribution or changes
Autor:
Siul Ruiz, Mathieu Lamandé, Thomas Keller, Johan Arvidsson, Markus Berli, A.P.S. Selvadurai, Per Schjønning
Publikováno v:
Keller, T, Berli, M, Ruiz, S, Lamandé, M, Arvidsson, J, Schjønning, P & Selvadurai, A P S 2014, ' Transmission of vertical soil stress under agricultural tyres : Comparing measurements with simulations ', Soil & Tillage Research, vol. 140, pp. 106-117 . https://doi.org/10.1016/j.still.2014.03.001
The transmission of stress induced by agricultural machinery within an agricultural soil is typically modelled on the basis of the theory of stress transmission in elastic media, usually in the semi-empirical form that includes the “concentration f
Autor:
Johan Arvidsson, Inge Håkansson
Publikováno v:
Soil and Tillage Research. 138:56-63
Soil compaction is generally regarded as negative for crop growth, although many studies show a curvilinear relationship between bulk density and crop yield. In the literature, there are few systematic studies of differences between crop species in t
Publikováno v:
Acta Agriculturae Scandinavica, Section B — Soil & Plant Science. 64:33-44
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
Publikováno v:
European Journal of Agronomy. 52:307-315
Crop yield data from 918 experimental years with shallow (5–10 cm) non-inversion tillage and 226 experimental years with no-tillage conducted in the period 1983–2012 were analysed, especially regarding effects of crop, preceding crop, soil type a
Publikováno v:
Acta Agriculturae Scandinavica, Section B - Soil & Plant Science. 63:554-563
The effects of seedbed properties on emergence of various crops were studied in a series of experiments. Results for crops with seeds weighing 6% plant-available water and covered by soil dominated by aggregates