Improvement of the efficiency of Acacia and Prosopis for controlling shifting sand using bio and mineral nitrogen fertilization [electronic resource].

Includes references.

Field experiment was carried out in Toshka region 300 tun south Aswan city during two successive years of 2003 and 2004 to study the efficiency of bio and mineral nitrogen fertilization on growth performance improvement ofAcacia sa/igna and Prosopis julijlora trees cultivated as shelterbelt for sand encroachment control in the area. Obtained results showed that the growth characters of Acacia sa/igna and Prosopis julijlora trees were significantJy higher in biofertilized and nitrogen fertilization compared to control treatment. Regarding the nutrients content in leaves, results indicated that the highest values of N, P and K were observed in the treatment of biofertilization combined with nitrogen application at a rate of ISO kg N/fed. Also, obtained results revealed that the biofertilization treatments gave higher values of organic matter content of soil rather than nitrogen fertilization one .Nutrients content of soil (N,P,K,Fe,Cu,Mn and Zn)was significantJy higher in the treatment of biofertilization combined with nitrogen application at a rate of lookg N/fed .

Summary in Arabic.

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