الفهرس 
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Abstract
A field study was conducted in the t\VO successiye seasons of 1990/1991 and 1991/1992 to investigate the etTects of foliar sprays with three nlicro-nutrients,i.e. Fe,Mn and Zn as \vell as their interactions on the gro\\rth, yield and yield conlponents or onion cv. ”Giza6 Mohassan” grown in the ne\v reclaulled soil. The present study \vas carried out at a private field of the ne\v reclainled soils at West Salnalout , El-Minia Govenl0rate. Treatnlents were spraying onion plants \\rith Fe at t\VO rates, i.e. 100 or 200 ppln; three ratesofeachofMnorZnatO.O, 100 or 200 ppln. Plants were sprayed t\\rice, i.e.~ 30 and 50 days after transplanting. Treatn1ents were arranged in a split- split-plots systenl in conlplete randonlized blocks design. Iron treatInents, were randOInly distributed in the 111ain plots. Meanwhile, Mn and Zn treatInents \vere randonlly distributed in the sub-plots and sub-sub-plots, respectively. Data on the plant growth, yield and its conlponents were recorded.
The obtained results lnay be slumnarized as follov :_
I.Percentages of doubled and bolting bulbs significantly reduced as Fe and Zn rates \vere increased. Mem1\vhile, Mn applications, significantly reduced percentage of bolting bulbs, but increased doubled bulbs.
2.1ron, Mn and Zn sprays significantly affected plant height, \vhere lnean values increased as the concentration of each Il1icronut.rient \vas increased.
3.Nulnber of lea yes / plant was significantly affect.ed by Fe, Mn and Zn applications, and nlllnbers increased \vith increasing applications rates.