Root growth and N-uptake activity of oilseed rape (Brassica napus L.) cultivars differing in nitrogen efficiency


KAMH M., WIESLER F., ULAŞ A., HORST W. J.

JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE, vol.168, no.1, pp.130-137, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 168 Issue: 1
  • Publication Date: 2005
  • Doi Number: 10.1002/jpln.200421453
  • Journal Name: JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.130-137
  • Keywords: oilseed rape, cultivars, nitrogen efficiency, root methods, root production, root activity, nitrate-N uptake, ZEA-MAYS L, NITRATE CONCENTRATION, MAIZE CULTIVARS, SOIL-CONDITIONS, SYSTEM, DENITRIFICATION, FERTILIZATION, CARBON, WHEAT, CORN
  • Erciyes University Affiliated: Yes

Abstract

Nitrate-N uptake from soil depends on root growth and uptake activity. However, under field conditions N-uptake activity is difficult to estimate from soil-N depletion due to different loss pathways. We modified the current mesh-bag method to estimate nitrate-N-uptake activity and root growth of two oilseed-rape cultivars differing in N-uptake efficiency. N-efficient cultivar (cv.) 'Apex' and N-inefficient cv. 'Capitol' were grown in a field experiment on a silty clayey gleyic fluvisol near Gottingen, northern Germany, and fertilized with 0 (N(0)) and 227 (N(227)) kg N ha(-1).