2012-04-22

The experiment was conducted in a plastic house (500m2) at the vegetable research field Department of Horticulture, College of Agriculture, University of Dohuk, Iraq, to study the effect of foliar application of seaweed extracts (seaforce and seamino) with concentrations (0.0, 1.5ml/L) for both extracts and exposure to low temperature (7±1)οC for three durations (0, 5 and 10) days on the vegetative growth, flowering and yield of two cucumber (Cucumis sativus L.) cultivars Karol and Reem cultivars. The extracts were sprayed three times with seven days intervals. The first spray was done on April 25th, 2011. Seeds were sown on February 22th, 2011 in plates, two seeds per pod inside the plastic house. The seedlings were exposed to low temperature after emergence of four true leaves by putting them inside cooling room. Then the seedlings were transplanted in plastic house field on March 12th, 2011 along eight perforated lines each seedling at a hole with a distance of 30 cm between each two plants. The experiment was arranged in a factorial experiment within split-split plot in a randomized complete block design with four replicates. means Comparison was done by using Duncan’s multiple range tests at 0.05% level. the results revealed that seaweed extracts, low temperature significantly improved most vegetative traits as well as flowering and yield characters.