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Asian Journal of Crop Science
  Year: 2013 | Volume: 5 | Issue: 4 | Page No.: 416-425
DOI: 10.3923/ajcs.2013.416.425
Impact of Nitrogen Sources on Growth of Zizyphus spina-christi (L.) Willd. and Acacia tortilis subsp. tortilis (Forssk.) Hayne Seedlings Grown under Salinity Stress
I.M. Aref and N.D. Shetta

Abstract:
The present study was conducted in laboratory and greenhouse of Range and Forestry Applied Research Unit in experimental station of Food and Agriculture Collage, King Saud University, at Dirab Valley, South of Riyadh City, during two successive seasons. The objective was to investigate the impact of two nitrogen sources (Ammonium sulphate and Calcium nitrate) on growth of two economical trees (Zizyphus spaina-chrsity (L.)) Desf. and Acacia tortilis subsp tortilis (Forssk.) under saline stress by using the mixed salts of Sodium and Calcium chloride (1:1 v/v) at concentrations of 1000-5000 ppm. The results indicated that, Acacia tortillis subsp. tortillis was the most response to the nitrogen source and more tolerant to salinity stress than the Zizyphus spina-christi under the field condition. The two nitrogen sources significantly increased the growth properties of the tree species growing under the salinity stress as compared to control treatment (water only). The fertilizers effect has the same effect on the growth of the tree species. The salt concentrations were affecting significantly of the growth of the trees and the most harmed concentration was 5000 ppm as compared with the other concentrations and the control treatment. So, the present study suggested using either the Ammonium sulphate or Calcium nitrate as the nitrogen source can improve the growth and the biomass of Acacia tortillis subsp. tortillis and Zizyphus spina-christi seedlings moreover, increased the salinity tolerant found in the nursery soil at Riyadh City as well as the hazed conditions in the field.
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How to cite this article:

I.M. Aref and N.D. Shetta, 2013. Impact of Nitrogen Sources on Growth of Zizyphus spina-christi (L.) Willd. and Acacia tortilis subsp. tortilis (Forssk.) Hayne Seedlings Grown under Salinity Stress. Asian Journal of Crop Science, 5: 416-425.

DOI: 10.3923/ajcs.2013.416.425

URL: https://scialert.net/abstract/?doi=ajcs.2013.416.425

 
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