This investigation was carried out during 2007 and 2008 growing seasons on six years old Arabi-pomegranate trees, grown in sandy clay loamy soil in a private farm located at Alexandria-Matrouh road, to study the effect of different fertilizers i.e., minerals (Ammonium Sulphate, Potassium Sulphate and Calcium Super Phosphate) at rate of 100% or 50% of the recommended dose or organic (humic acid or compost solely) or their combinations on growth, fruit set, yield, fruit quality and leaf minerals

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... ontent during both seasons of study. The obtained results showed that, vegetative growth, fruit set, yield as weight or number of fruits /tree as well as fruit quality (average fruit weight, diameter, length, TSS and anthocyanine) and leaf N content were, generally, improved under all treatments as compared with control in both seasons. While, slight effect on leaf P and K content were noticed. The studied treatments decreased juice acidity and did not significantly affect V.C. and tannins content in both seasons. The striking treatments 50% of the recommended rate of NPK + organic matter (compost or humic acid) were most effective in improving all parameters when compared with other treatments. It is worthy to note that, using 50% of the recommended rate of NPK + organic matter (compost at 25Kg/ tree or humic acid at 12.5 or 25g /tree) had a similar effect to the treatment 100% of the recommended rate of NPK solely. Hence, it could be concluded that fertilizing pomegranate trees with 50% of the recommended rate of NPK + humic acid at higher rate 25g/ tree is the promising treatment under the same condition of our study. Moreover, it reduced half the amount of the recommended mineral fertilizers as well as soil pollution.