Effect of Plant Spacting and Growth Regulators on Growth .Seed Yield and Volatile Oil of Fennel Plant

The aim of this investigation is to throw more light on this promising plant through studying the effect of different plant spacing combined with different concentrations of three growth regulators i.e. gibberellin, cycocel and kinetin to reveal the optimum levels of these growth factors with induce h ighest production of fennel seeds and essential oil yield.