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Articles by Holger Kirchmann
Total Records ( 1 ) for Holger Kirchmann
  Holger Kirchmann and Johannes Eskilsson
  A range of locally available liming materials of different geological origin, particle size, and application rate were investigated in 15 field sites over a period of 8 years. At 5 sites, lime addition to soils caused average yield losses of 7%. Concentrations of Mn and Cu but not of boron and zinc in grains declined in limed plots. Decline in concentrations of Mn and Cu were significantly correlated with increasing soil pH-values. Crop data indicated that concentrations of Mn and Cu in grains reached low, critical levels. Yields declined at threshold values amounting to 15 mg Mn kg-1 for wheat and barley, 25 mg Mn kg-1 for rye, 30 mg Mn kg-1 for oat, and 3 mg Cu kg-1 for the four cereals.
 
 
 
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