الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Includes Bibliographic References.1- Number of days from sowing till harvest
The application of ascorbic acid (0.1gm/L) recorded the shortest
period till full heading in both growing seasons which were 109.72
and 111.30 days followed by salicylic acid (0.1gm/L) which
recorded 110.77 and 112.68 days in both seasons while foliar
spraying on plants with citric acid (0.2gm/L) recorded the longest
period till full heading in both seasons
foliar application of zinc sulphate decreased significantly period till
full heading in both seasons compared with untreated plants
(control) in the two successive seasons of 2005/2006 and 2006/2007.
Addition of zinc sulphate decreased period till full heading in both
seasons over control by 7.18 and 7.97 days in the first and second
season respectively.