الفهرس 
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Abstract
A field investigation was carried out in the two winter successive seasons of 1990 and 1991 to evaluate the effects of NPK fertilizer levels on the growth yield and its components of cabbage plants cv. ”Balady mohassan”. The present study was conducted at the experimental farm, faculty of agriculture EL- minia university. Treatments were arranged in a split- split- plots system in complete randomized blocks design. Nitrogen fertilizer was used at the rate of 40, 80 and 120kg N/fed. And randomly distributed in the main plots. Phosphours at the rate of 15.5, 31.0and 46.5kg p2 o5 /fed. And potassium at the rate of 50 and 100kg k2o/fed. Were distributed at random in the sub- plots and sub-sub- plots respectively.