الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The objectives of the present study were to maximize the rice crop as follows :
1-Studying the effect of land levelling with different planting methods on growth, yield and yield components of rice, in addition to their effects on some physical properties.
2-Estimating water requirements and consumptive use of rice crop as well as use efficiencies and the effect of irrigation head on rice yield.
3-Assessment the effect of some non-traditional N fertilizers comparing with N-mineral fertilizer for creating new safe and healthy fertilizers to prevent more pollution assurance as well as saving a large amounts of mineral nitrogen fertilizers (optimizing fertilizer use), which could be realized using blue green algae mixed a moderate amount of mineral nitrogen fertilizer as a non traditional fertilizers for rice crop.