The current research consists of two field trials carried out during 2014/2015 and 2015/2016 seasons at the El- Maghara Research Station-DesertResearch Center., to study the effect of sowing dates and spacing on the growth, and productivity of Dutch fennel under Sinai condition.The experiment was designed in a split-plot design of six treatments with three replications for each treatment, as the sowing space in the main plot with three sown spacing at 30, 50 and 70 cm, and the number of plants/hills came in the subplots in two levels as one or two plants/hill.The results showed that, application sown spacing at 50 cm between plants with planting density one plant per hill recorded the highest values of fresh and dry weights/plant, number of umbels/plant, fruit yield /plant, oil yield/plant and also chemical constituents including chlorophyll a, b, total chlorophyll, carotenoids, N, P, K and total carbohydrates percentage in both seasons. Meantime. The highest values of plant height, the weight of 1000 fruits and essential oil percentage were obtained with sown spacing at 30 cm between plants with planting density one plant/hill for both seasons. While the sown spacing at 30 cm between plants with planting density two plants/hill for both seasons recorded the highest of fruit yield /feddan (ton) and oil yield/feddan.
Foeniculum vulgare; spacing, density; growth; yield