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, cilt.168, sa.1, ss.130-137, 2005 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 168 Konu: 1
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1002/jpln.200421453
  • Dergi Adı: JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
  • Sayfa Sayıları: ss.130-137

Özet

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).