Affordable Access

Access to the full text

Plant species and growing season weather influence the efficiency of selenium biofortification

Authors
  • Ebrahimi, Nashmin1
  • Stoddard, Frederick L.2
  • Hartikainen, Helinä3
  • Seppänen, Mervi M.1
  • 1 University of Helsinki, Department of Agricultural Sciences, Latokartanonkaari 5-7, Helsinki, 00014, Finland , Helsinki (Finland)
  • 2 University of Helsinki, Department of Agricultural Sciences, Viikki Plant Science Centre and Helsinki Sustainability Centre, Latokartanonkaari 5-7, Helsinki, 00014, Finland , Helsinki (Finland)
  • 3 University of Helsinki, Department of Food and Environmental Sciences, Latokartanonkaari 11, Helsinki, 00014, Finland , Helsinki (Finland)
Type
Published Article
Journal
Nutrient Cycling in Agroecosystems
Publisher
Springer Netherlands
Publication Date
Apr 06, 2019
Volume
114
Issue
2
Pages
111–124
Identifiers
DOI: 10.1007/s10705-019-09994-z
Source
Springer Nature
Keywords
License
Green

Abstract

Se deficiency is widespread in agricultural soils; hence, agronomic Se biofortification is an important strategy to overcome its deficiency in humans and animals. In Finland, fertilizers have been amended with inorganic Se for over 20 years to reverse the negative effects of low Se content in feed and food. Plant species, climatic conditions, other nutrients and soil properties affect the efficiency of Se biofortification. The present two years’ study compared the ability of oilseed rape, wheat and forage grasses to uptake fertilizer Se applied as sodium selenate in a sub-boreal environment. The effect of foliar N application on Se uptake was tested in the second year. Se concentration was determined in plant parts and in soil samples taken at the end of growth season in both years as well as from another plot where Se fertilizer had been used for 20 years. Se fertilizer recovery in harvested wheat and oilseed rape was 1–16%, and in forage grasses was 52–64% in the first harvest and 15–19% in the second harvest. Foliar N application improved Se uptake only at the higher Se fertilizer level. The efficiency of biofortification depended on weather conditions, with forage grasses being the most reliable crop. Oilseed rape as a Se semi-accumulator had no advantage in Se biofortification in field conditions due to low translocation to seeds.

Report this publication

Statistics

Seen <100 times