ater culture. The eıperimeni was carried out in laboratory conditions for a period of 55 days. The test planı was harvested just beforeflowering In general, the vegetative growth berter when plants were grown in solution containing both NO3 and NH4. With increasıng NH4 in nutrient solution, total -N increased, where as K, Ca, Mg and Na contents of ali parts analysed decreased with increasing NH4 in solution increased P content ofstems and leaves, were as decreased P in roots. The micronutrients determined in tops and roots have not shown a clear tende ney depending on the N-Source in nutrient solution. As a result it can be concluded that NO3-N alone or NO3 in combînation with NH4 in growth media, have increased plant growth more than NH4 alone."> ater culture. The eıperimeni was carried out in laboratory conditions for a period of 55 days. The test planı was harvested just beforeflowering In general, the vegetative growth berter when plants were grown in solution containing both NO3 and NH4. With increasıng NH4 in nutrient solution, total -N increased, where as K, Ca, Mg and Na contents of ali parts analysed decreased with increasing NH4 in solution increased P content ofstems and leaves, were as decreased P in roots. The micronutrients determined in tops and roots have not shown a clear tende ney depending on the N-Source in nutrient solution. As a result it can be concluded that NO3-N alone or NO3 in combînation with NH4 in growth media, have increased plant growth more than NH4 alone." > NH4 VE N 0 3 BESLENMESİNİN SU KÜLTÜRÜNDE YETİŞTİRİLEN DOMATES BİTKİSİNİN GELİŞME VE MİNERAL İÇERİĞİNE ETKİSİ / EFFECT OF NH4 and N03 NUTRITION ON THE GROVVTH AND MİNERAL COMPOSITION OF TOMATO PLANTS GROVVN IN VVATER CULTURE