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Abstract
The present work proved the efficiency of using tap water; of E.C. 1.24 ds/m , total soluble salts 793.6 ppm and containing 8.09 ppm sodium , in preparing Hogland solution for growing tuberose plants (Polianthes tuberosa L) until flowering in nutrient film technique (NFT). Hogland solution containing ammonium and nitrate as nitrogen forms proved to be better than that containing nitrate form only. Deduced prepared commercial fertilizer formula solution was nearly similar to Hogland solution and resulted in significant enhancing effect than Hogland solution for the vegetative and flowering characters. Using tap water and the commercial fertilizers formula decreased the costs of production , taking in consideration that this technique produced high yields (about 100 spikes/nr’). The main conclusion of this work indicate that I sand : 1 rice straw or 1 sand : 1 saw dust media are available and cheap media for producing tuperose plant in pots and they must fertilize with (8.4 gm ammonium nitrate, 12 gm super phosphate and 6 gm potassium sulfate) to produce good flower stalks. Also NFT technique with the deduced commercial fertilizer formula prepared with tap water was a promising technique but the productivity and the costs of each system will be the judge as the productivity of the cheap solid media will be 36 spikes/ m2 against 100 spikes/m for NFT technique.