الفهرس 
INTRODUCTION…Only 14 pages are availabe for public view
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Abstract
A field experiment was carried out during summer seasons of 2007
and 2008 at The Experimental Research Station of The Agriculture
Research Center, El-Arish, North Sinai. The main object of this research
was to study two organic, (chicken manure”ChM”, compost ”CoM”),
two antioxidants (ascorbic acid ”AA”, citric acid ”CA”), and natural
yeast on growth and yield of tomato plants (GS 12). The highest total
early yield was recorded with application of chicken manure with yeast.
The highest records for total yield (ton/fed) was recorded with
application of chicken manure or compost combined with and
application of yeast followed by ascorbic acid.