A field experiment was conducted at the experimental farm of the Horticulture
Research station, South EI-Tahrir province during the two successive seasons to study
the influence 0 f mineral, organic and bio-fertilizer on some growth characters, dry
matter, yield, fruit oil content and nutrients content of Fennel plants. Mineral fertilizers were applied to the soil either alone or together with the
studied organic fertilizer (FYM) and bio-fertilizer N2-fixers. Nitrogen fertilizer was added
at arate of 0,150,300 kg fed" and FYM was added at a rate of 15, 30 m³/fed. Fennel plants height and number of branch affected by applied fertilizer. The
maximum fennel plant height was occurred by the addition of half dose of mineral N +         30 m³/fedden FYM and inoculation the seeds by            N2 - fixers. Seed index (weight of 100 fruits) and fruit yield per feddan was significantly
affected by applied mineral, organic and bio-fertilizer. The maximum seed index and
fruit yield for fennel was achieved during the 2^nd season by application of 112 dose of N
+ 30 m³ FYM/fed. and seed inoculation with N2-fixers. Dry matter yield at age of 40 days of fennel plant was considerably affected
by application of bio-fertilizers. The maximum dry matter was achieved by addition of
half dose of mineral Nand ful dose FYM and seeds inoculated with N2-fixers. The obtained data showed that application of mineral, organic and
bio-fertilizers markedly increased NPK concentration and uptake of fennel plants. Oil percentage was markedly affected by mineral N, organic matter and
bio-fertilizer. The maximum fennel oil percentages were recorded by addition of half
dose of mineral N, full doses of FYM and N2-fixers.