الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
, the possibility of supplying bio and chemical fertilizers to onion plants under sandy soil conditions of is undoubtedly of great important to reduced the amount of added mineral fertilizer alone to onion plants.
therefore, the purpose of the present work is to study the possibility of eliminating and / or decreasing the amount of major mineral fertilizers (N,P and K) by using biofertilizers in the production of onion plants under sandy soil conditions.