Two field trials were carried out dlM'ing two successive winter seasons of
200212003 and 2003/2004 at the farm of El·Nubaria Hart. Research Station to study
the response of cabbage plants (cv. Brunswick) to nitrogen fertilizer levels, plant
density and zinc foliar nutrition on growth. yteld and chemical composition of cabbage
plants. The main results obtained from this investigation could be summarized as
follows:- Effect of nitrogen levels: Increasing nitrogen rates from 40 to 80 kg/fed caused
significant Increase in all studied traits, except Fe and Zn content of leaves,
which was decreased by increasing N levels, P% was not affected by N levels. Plant spacing: The highest values were obtained from lower density (SO em),
except yield (ton/fed) and Fe and Zn content were significantly Increased with
closest spacing (30 cm). Zn foliar spray: Foliar application with chelated Zn (12% Zn) at 1 gIL Zn gave the
highest values of outer leaves I plant, plant fresh weight, head weight, yield
(ton/fed), length and diameter of heads and significantly increased leaf content
of Mg and Zn (ppm). Leal content of N, P and Fe, Mn were significantly
decreased with foliar application with Zn compared with untreated treatment
(without Zn).         ~.      Effect of Interaction: The traits under study were insignificantly affected by the
interaction between N levets, plant spacing and foliar application with Zn. The study concluded that the highest yield was obtained from:               i.        Fertilization with 80 kg N/fed.              ii.       The ideat spacing for cabbage plants under Nubaria location Is 30 cm.