This study was carried out at the Experimental Station. Pararnoon Station,
Mansoura Horticulture Institute during the two successive seasons of 1 ~9 and 2000.
The objective or this sludy was to study the effect of different plant density and
pla;;~ing dates on vegetative growth and chemical composition of peas (Pisum
sstivum, L.) cv. Master B. I· Vegetative growth: Planting growing peas at 151!! October significantly increased plant height (ern),
plant fresh weighl (g.), plant dry weight (g.), No. of leaves per plant, tern diameter
(em) and leaf area per plant (cm²) in both seasons. The amount of seeds 50 kg/fed the lowest plant density (50 Kglfed). Data showed
increased for plant height (ern), fresh weight F,r plant (g.). dry weight er plant (g.),
stem diameter (cm) and leaf area per plant (cm ) in both seasons. The medium plant density exerted a medium effect on all growth arameters in
bolh seasons except for No. of leaves per plant in lhe second seasc s only which
was slmilar to Ihal of the lowest plant density. Growing peas on 15!!! October with 50 kg/fed increased plant fresh wei9ht (g.).
plant dry weight (g.). number of leaves per plant, number of branches p r plant. stem
diameter (cm) and lear area per plant (cm²) than the other treatments in both
seasons. An exception in this treatment is that plant height decreased than other
treatments. II is also clear that at the same planting date (October! 1SI!!) with 75
kg/fed. II· Chemical composition or leaves: Sowing peas on the October 1S!!l increased leaf content o( total nitrogen (N).
phosphorus (P20S) and potassium (K20) in both seasons. Planting growing peas during October 15t!! gave the highest contents in Ihe leaves of
chlorophyll a, b and total chlorophyll with a significant differences Ihan November 15!!l
and December 1Sl!! in both seasons. Growing peas at 50 kg/fed increased nitrogen, phosphorus, potassium. chlorophyll a,
band lolal chlorophyJl in leaves than growing at 60 kgffed in both seasons.