Effect of Bio-Fertilization Along With Different Levels of Nitrogen Fertilizer Application on the Growth and Grain Yield of Hassawi Rice (Oryza Sativa L.)

(Ahmed Abdel Rahman Naim and a friend)

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Abstract

A field experiment was conducted at the Agricultural and Veterinary Training and Research Station of King Faisal University, Al-Hassa, Kingdom of Saudi Arabia during 2000 and 2001 seasons to study the influence of bio-fertilization (Control, cyanobacteria, Azospirillum and Azotobacter isolated from Hassawi rice fields in Al-Hassa) and different levels of nitrogen fertilizers (90, 135 and 180 kgN/ha) on growth, grain yield and its components of Hassawi rice (Oryza sativa L.). A split plot design with five replicates was used. Nitrogen fertilizer levels represented the main plots and bio-fertilization represented the sub-plots.
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