The research was conducted in village Habbet in Hafa (Lattakia region) 300 meters above
sea level during the period of 2016-2017 the plant material of the research is red cabbage
Ruby King F1 hybrid in order to study the effect of planting date on
growth and
productivity of red cabbage. The study consisted of five different planting dates during the
med of May, June, July, August and ,September months The completely randomized block
design was used with four replications and twenty plants in replication . The study contains
indicators: )leaf surface area, shape, volume, solidity and weight of cabbage heads, inner
stem length, total and marketable yield, percentage of marketable yield and content of
vitamin C)
The results showed that planting treatment during August and September gave the superior
results with significant difference in vegetative and productive indicators: leaf surface area,
solidity and weight of cabbage heads, total yield )3394.8، 3654( kg/d respectively,
marketable yield and percentage of marketable yield.
While The planting during May, June, July was superior on content of vitamin C which
was respectively (99.58, 98.68, 97.82 ( ml/100g with significant difference.
