Skip to main content

Long-term management effects on plant N uptake and topsoil carbon levels in Swedish long-term field experiments: cereals and ley, crop residue treatment and fertilizer N application

Buy Article:

$63.00 plus tax (Refund Policy)

Abstract:

Estimates of soil N mineralization capacity and the factors that control the rates are necessary for optimal N management. Long-term field experiments can be used to measure how different management options affect the amount and quality of soil organic matter (SOM) – the substrate for N mineralization. Net N mineralization was estimated in a pot experiment as N uptake by ryegrass (Lolium perenne) grown in pots with soils from 30 Swedish long-term field fertility experimental treatments (16–40 years). The long-term management effects of cereal and ley rotations, crop residue removal and return and inorganic N application on ryegrass N uptake were investigated and related to soil organic carbon (SOC) content. Total plant N uptake during three months varied between 9 and 27 mg N kg -1 (23–67 kg N ha -1 ) and increased with SOC concentration and previous application levels of inorganic N. Soil from crop rotations with ley mineralized about 50% more N than soil from crop rotations with only cereals. Plant N uptake and SOC were not significantly affected by crop residue return.

Keywords: Crop residue treatment; SOM; crop rotations; pot experiment; soil fertility

Document Type: Research Article

DOI: https://doi.org/10.1080/09064710510008739

Affiliations: Department of Soil Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden

Publication date: 2005-03-01

More about this publication?
  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more