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- Title
Effects of Nitrogen Fertilization and Soil Inoculation of Sulfur-Oxidizing or Nitrogen-Fixing Bacteria on Onion Plant Growth and Yield.
- Authors
Awad, Nemat M.; El-Kader, A. A. Abd; Attia, M.; Alva, A. K.
- Abstract
A field experiment was conducted in a newly reclaimed soil at El-Saff region, El-Giza Governorate, Egypt to study the effects of different rates of nitrogen (N:62 to 248 kg ha-1) with or without soil inoculation of sulfur- (S-) oxidizing bacteria (SoxB) and combined inoculation of SoxB and N-fixing bacteria (NFxB) on yield, quality and nutritional status of onion (Allium cepa L., "Giza 20"). Elemental S at 620 kg ha-1 was applied to all treatments. Application of N at 62, 124, and 248 kg ha-1 rates increased onion yield, plant height, and N uptake by 28 to 76%, 32 to 53%, and 61 to 145%, as compared to those of the plants that received no N. Inoculation of SoxB at various N rates increased onion yields by 47 to 69% and N uptake by 76 to 93%, as compared to those of the plants which received the respective rates of N but no SoxB inoculation. Inoculation with SoxB and NFxB increased onion yield by 221%, plant height by 62%, and N uptake by 629%, as compared to those of the plants grown without inoculation and no N applied.
- Subjects
EXPERIMENTAL agriculture; SOIL management; CROPPING systems; NITROGEN in soils; CROP yields; CULTIVARS; PLANT nutrition; EFFECT of nitrogen on bacteria
- Publication
International Journal of Agronomy, 2011, Vol 2011, p1
- ISSN
1687-8159
- Publication type
Article
- DOI
10.1155/2011/316856