الفهرس 
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Abstract
ABSTRACT This study was carried out in 2017/2018 and 2018/2019 seasons, at Baloza Agricultural Experimental Station, Desert Research Center, Baloza Region, North Sinai, Egypt. The study aims to evaluate the effect of bio-fertilizers (Azotobacter chroococcum, Bacillus megaterium var. phosphaticum and Saccharomyces cerevisiae) and chemical fertilization (NPK) on vegetative growth measurements (plant height, branches number/plant, herb fresh weight/plant and herb dry weight/plant); yield parameters (umbels number/plant, 1000-seed weight, seed yield per plant and seed yield per fed.); oil parameters (oil %, oil yield/plant, oil yield/feddan and oil constituents), chlorophyll a, chlorophyll b, carotenoids, total chlorophyll and chemical constituents of herb (NPK percentage plus total carbohydrates percentage) of Dutch fennel (Foeniculum vulgare Mill. spp. vulgare) and caraway (Carum carvi L.) plants.Treatments were five levels of fertilization (full recommended dose of NPK only, 75, 50, 25% of the recommended NPK dose plus bio-fertilizers and bio-fertilizers only). The experiment was arranged in a randomized complete block design (RCBD) with three replicates.