الفهرس 
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Abstract
The present investigation was conducted during the two successive seasons of 2014/ 2015 and 2015/ 2016 in the Experimental Nursery, Floriculture Division, Hort. Dept. Fac. of Agric., Minia Univ. Such experiment aimed to study the effect of four compost levels and five NPK/ Minia azotein treatments, as well as , their interaction on vegetative growth , yield and yield components, essential oil and chemical constituents of Ammi visnaga, L. plants grown in sandy soil.
from the environmental and economical point of view, it is recommended, for the first experiment, to supply fennel plants with 50%compost (3.75 ton/ fed.)+ 50%NPK, 100 Kg/fed. ammonium nitrate (33.5%N), 75 Kg/fed. calcium superphosphate (15.5%P2O5) and 50 Kg/fed potassium sulphate (48.5% K2O) in combination with the dual biofertilization treatment (Minia Azotein+ phosphorein) in order to maximize the fruit and essential oil productivity.