References
- Ahmed , K.A. 1996 . Effect of fertilization on the growth, yield and chemical content of some medicinal umbellifereae plants , Cairo, , Egypt : Al‐Azhar University . M.Sc. Thesis
- Bernath , J. , Foldesi , D. and Lassanyi , Zs. 1973 . Effects of nutrition supply and soil type on Valeriana officinalis L. sp. Collina (Wallr). Changes in root organization, growth and dry yield of the plant . Herba Hungarica , 12 (1) : 45
- Boulus , L. 1995 . Flora of Egypt, Checklist , Cairo, , Egypt : Al Hadara Publishing .
- Boyle , T.H. , Craker , L.E. and Simon , J.E. 1991 . Growing medium and fertilization regime influence growth and essential oil content of rosemary . HortScience , 26 (1) : 33 – 34 .
- Cox , D. 1992 . Fertilizing Herbs . The Herbs, Spices and Medicinal Plant's Digest , 10 (3) : 1 – 5 .
- 1984 . Egyptian Pharmacopoeia , Cairo, , Egypt : General Organization for Governmental Printing Office .
- El‐Ballal , A.S. , Mandour , M.S. , Nofall , M. and Tawfik , M.S.H. Physiological homeostasis of essential oil production in lemon grass (Cymbopogon citratus L.) . Proceedings IX International Congress of Essential Oils . March 13–17 1983 , Singapore, Thailand. pp. 147 – 151 .
- El‐Gamal , E.A. , Mahmoud , M.M. and Omar , F.A. 1983 . Effect of some fertilization treatment on yield and volatile oil content of (Carium carvi L) . Annu. Agric. Sci. Faculty Agric. , 28 (3) : 1605 – 1614 .
- Ghosh , M.L. and Chatterjee , S.K. 1991 . “ Patterns of essential oil formation in lemon grass in relation to growth and metabolism of the plant under varying nutritional supply ” . In Recent Advances in Medicinal, Aromatic, and Spice Crops , Edited by: Raychaudhuri , S.P. Vol. 1 , 179 – 190 . New Dehli, , India : Today and Tomorrow's Printers and Publishers .
- Guenther , E. 1973 . The Essential Oil , New York, NY : Van Nostrand Co. Inc. .
- Hassan , S.M. , Abou Tahlib , N.S. , Omer , E.A. and Eissa , A.M. 1997 . Response of Origanum syriacum to foliar application of urea and cycocel . Zagazig J. Agric. Res. , 24 (5) : 495 – 505 .
- Heath , H.B. 1978 . Flavor Technology: Profiles, Product, Application , Westport, CT : AVI Publishing Co. Inc. .
- Hornok , L. 1980 . Effect of nutrition supply of dill (Anethum graveolens L.) and the essential oil content . Acta Hort. , 96 : 337
- Ivanova , L. and Gogija , R. 1968 . The effect of increased rates of mineral fertilizers on the quantity and composition of oil in rose geranium . Trudy sauhum. Opty. Stan. Efirnomasl Kulture , 1965 : 63 – 74 .
- Jackson , M.L. 1973 . Soil Chemical Analysis , Hall of Indian Private Limited M 97 New Delhi, , India : Cannaught Circus .
- Maheshwari , S.K. , Gaugrade , S.K. and Yadav , S. 1989 . Response of herbage and alkaloid yield of Hyoscymaus albus to nitrogen and phosphorus . Indian J. Agron. , 34 (2) : 163 – 166 .
- Mitchell , A.R. and Farris , N.A. 1996 . Peppermint response to nitrogen fertilizer in an arid climate . J. Plant Nutr. , 19 (6) : 988 – 997 .
- Omer , E.A. , Ouda , H.E. and Ahmed , S.S. 1994 . Cultivation of sweet marjoram, Majorana hortensis in newly reclaimed lands of Egypt . J. Herbs, Spices and Medicinal Plants , 2 (2) : 9 – 16 .
- Piccaglia , R. and Marotti , M. 1993 . Characterization of several aromatic plants grown in Northern Italy . Flavor and Fragrance J. , 8 : 115 – 122 .
- Pridham , J.B. 1976 . Terpenoids in Plant , London, , England : Academic Press .
- Razin , A.M. , Omer , E.A. , Refaat , A.M. and Ouda , H.E. 1992 . Response of thyme Thymus vulgaris L. to foliar fertilization with some micronutrients . Egypt. J. Appl. Sci. , 7 (6) : 614 – 624 .
- Sarer , E. , Scheffer , J.J.C. and Baerhein , A. 1982 . Monoterpens in the essential oil of Origanum majorana . Planta Medica , 46 : 236
- Simon , J.E. , Chadwick , A.F. and Craker , L.E. 1984 . Herbs: An Indexed Bibliography 1971–1980 , Hamden, CT : The String Press, Inc. .
- Singh , V.P. , Chatterjee , B.W. and Singh , D.V. 1989 . Response of mint species to nitrogen fertilization . J. Agric. Sci. , 113 (2) : 267 – 272 .
- Snedecor , G. and Cochran , W.G. 1980 . Statistical Methods. , 7th ed. , Ames, IA : Iowa State University .
- Tackholm , V. 1974 . Student's Flora of Egypt. , 2nd ed. , Beirut, , Lebanon : Cairo University, ARE. Coop. Printing Co. .
- Werker , E. , Ravid , U. and Putievsky , E. 1985 . “ The essential oils and glandular hairs in different chemotypes of Origanum vulgare ” . In Carvacrol and Thymol Chemotypes of East Mediterranean Wild Labiatae Herbs , Progress in Essential Oil Research Edited by: Ravid , U. and Putiensky , E. 163 – 1677 . New York, NY : Walter de Gruyter & Co. .