الفهرس 
REVIEW OF LITERATUREOnly 14 pages are availabe for public view
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Abstract
This work aims to maximize the yield of potato plants by using different concentrations of gibberellin, cycocyl and pyrogallic acid and to investigate the effect of these growth regulators on the growth of potato plants during development under Egyptian conditions. The experiments are carried out using experimental blots, each of which is 1/200 feddan (21m2). Treatments are arranged in complete randomized blocks design in four replicates. Potato varieties (Claudia, Kerpondy) are cultivated in two dates and carried out in both summer and Nile cropping seasons.