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Abstract
This investigation was carried out during the two
successive seasons of 2001 and 2002 to study the effect of
fertigation with NPK and irrigation regime on growth, leaf
mineral content, blooming and fruiting and fruit quality of
Manfalouty pomegranate at EL- Magara Experimental Station
North Sinai Governorate. The trees received 150 ppm N, 50
ppm P and 75 ppm K during the vegetative growth while they
received 75 ppm N, 50 ppm P and 150 ppm K during setting
and developing fruit stage. The nitrogen sources were nitric acid
(13.3% N) and ammonium nitrate (33% N) as well as
diarnmonium phosphate while phosphor sources were
phosphoric acid (57.9% p) and also diammonium phosphate
(53.7% p) Moreover, potassium sources were potassium
hydroxide (83.9%) and potassium carbonate (68.2%). from the
results obtained, the treatment of extended irrigation interval x
nitric acid x phosphoric acidx potassium carbonate was more
effective in vegetative growth, yield, fruit weight and fruit size.
In addition it significantly decreased rrui,t split.