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Abstract
This investigation included two main parts, the first part represent two experiments were done for studing the effect of bio and chemical nitrogen nutrition and their interaction on the growth, yield as well as chemical composition of ammi visnaga L. plants.otherwise, the second part of this study was dealing with studing the effect of watering, salinity and their combination on the growth, yield and chemical constituents of mentha spicata var longifalia L. plant.