Plant and Soil

, 313:227 | Cite as

Characterisation of hemp (Cannabis sativa L.) roots under different growing conditions

  • Stefano AmaducciEmail author
  • Alessandro Zatta
  • Marco Raffanini
  • Gianpietro Venturi
Regular Article


Hemp (Cannabis sativa L.) is mainly grown for its fibre and is considered a desirable crop for sustainable production systems. In a field trial carried out over two years in Northern Italy the root system of a hemp crop, cultivated at contrasting plant densities, was sampled and analysed with an image analysis software. Root length density (RLD) was highest in the first 10 cm of soil, almost 5 cm cm−3; it decreased progressively until the depth of 130 cm, a part from a peak at 90–100 cm in response to a perched water table. Roots were found to 130 cm of depth in one year and to 200 cm in the other. Root diameter was finer (190 μm) in the upper soil layer, it increased with depth until 100 cm, and remained constant at 300 μm thereafter. Following the same trend of RLD, root biomass was highest in the first soil layer; 50% of the root biomass was found in the first 20 cm or 50 cm when taproot biomass was considered or not. Total root biomass was 3.21 t ha−1 and 2.41 t ha−1 in the two years of trial, but the ratio between aboveground and below ground biomass was constant at 5.46. None of the root parameters were significantly affected by plant population, which seems to confirm the plastic behaviour that hemp shows for aboveground development. The high root biomass production measured in this study, especially in deeper soil layers, provides additional evidence of the positive role that hemp can play in sustainable cropping systems.


Hemp Image analysis Root growth Soil texture 



Research described in this paper was financed by the European Commission in the frame of the project HEMP SYS (Design, Development and Up-Scaling of a Sustainable Production System for HEMP Textiles: An Integrated Quality SYStems Approach) contact number QLK5-CT-2002-01363.


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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Stefano Amaducci
    • 1
    Email author
  • Alessandro Zatta
    • 2
  • Marco Raffanini
    • 2
  • Gianpietro Venturi
    • 2
  1. 1.Istituto di Agronomia Generale e Coltivazioni ErbaceeUniversità Cattolica del Sacro Cuore sede di PiacenzaPiacenzaItaly
  2. 2.DiSTA (Dipartimento di Scienze e Tecnologie AgroambientaliUniversità degli studi di BolognaBolognaItaly

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