Bioavailable copper and other heavy metal contents in organically and conventionally managed German vineyard and hop soils.

Part 3: Determination of plant available contents of copper and other heavy metals by NH<sub>4</sub>NO<sub>3</sub>-extraction

Authors

  • Anna Steindl Julius Kühn-Institut – Bundesforschungsinstitut für Kulturpflanzen, Institut für ökologische Chemie, Pflanzenanalytik und Vorratsschutz, Berlin
  • Thomas Strumpf Julius Kühn-Institut – Bundesforschungsinstitut für Kulturpflanzen, Institut für ökologische Chemie, Pflanzenanalytik und Vorratsschutz, Berlin
  • Frank Riepert Julius Kühn-Institut – Bundesforschungsinstitut für Kulturpflanzen, Institut für ökologische Chemie, Pflanzenanalytik und Vorratsschutz, Berlin

DOI:

https://doi.org/10.5073/JfK.2011.05.03

Keywords:

Copper, bioavailability, vine, hop, Plasmopara viticola, Pseudoperonospora humuli, load distribution, risk assessment, selection of monitoring areas

Abstract

Objective of the examinations is to indentify relations between plant available copper contents in vineyard and hop soils and management or natural factors.

2522 single soil samples were collected on 85 vineyard and 13 hop areas. Samples were taken on cultivated, fallow and uncultivated soils and plant-available copper contents were analyzed in NH4NO3 extract (DIN, 1997). Additionally soil parameters as pH-value, C/N ratio, soil type etc. were analyzed (VDLUFA, 1991).

A strict relation between plant-available and total copper contents could not be verified. It is considered that the availability of copper being related to a specific goal of protection may depend on a variety of pedological, ecological and cultivation related influences not allowing an exposure assessment for groups of soil organisms rele­vant for a sustainable culture by using a specific extraction method like e.g. ammonium nitrate. It will be up to additional specific investigations to identify the main factors (e.g. soil management or culturing techniques) respon­sible for the extent of bioavailability, and to quantify their impact.

 

 

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Published

2011-05-01

Issue

Vol. 63 No. 5 (2011): Special issue copper

Section

Original Article

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