THE PRODUCTIVITY OF GARLIC PLANT AS AFFECTED BY THE ADDITION OF NITROGEN FERTILIZER IN THE FORM OF ORGANIC AND I OR INORGANIC

Two field experiments were carried out during the two seasons of 2001 and
2002 at the Experimental Station farm of National Research Centre at Shalakan "
Kalioubia Governorate" to study the response of garlic plant to nitrogen fertilizers, i. e.
3 organic sources (cattle, chicken and town refuse) and 3 chemical rates (the
recommended rate RR, Y2 RR and Yo RR). The important results are as following:
         1-    The best plant growth parameters (length of plant, number of leaves and fresh
and dry weight of whole plant and its different organs, all of them were associated
with addition organic nitrogen at rate 60 kg Nt fed. in the form of chicken. Also the
heaviest bulbs yield and the gloves tissues content of minerals were correlated
with chicken manure addition.
        2-     Addition of the recommended rate (RR) of chemical nitrogen (60 kg Nt fed.)
resulted the tallest and the heaviest fresh and dry weight of garlic plant. Also the
heaviest garlic bulb yield and its nutritional values, i. e. N, P, K, Fe, Mn, Zn and
Cu were correlated with the addition (RR).
        3-     The interaction treatments showed that using chicken manure with the RR of
chemical nitrogen resulted the superiority in plant growth characters as well as
the best garlic bulb yield and its content cf N, P, K, Fe, Mn, Zn and Cu.