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-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 168 Sayı: 1
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1002/jpln.200421453
  • Dergi Adı: JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.130-137
  • Anahtar Kelimeler: 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 Üniversitesi Adresli: Hayır

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).