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V. D. Zheljazkov, Faire, P., and Craker, L. E., Study of the effect of highly heavy metal polluted on metal uptake and distribution in plants from genera Artemisia, Draccocphalum, Inula, Ruta and Symphtum, 1996.
V. D. Zheljazkov, Cantrell, C. L., Astatkie, T., and Hristov, A., Yield, Content, and Composition of Peppermint and Spearmints as a Function of Harvesting Time and Drying, Journal of Agricultural and Food Chemistry, vol. 58, no. 21, pp. 11400 - 11407, 2010.
V. D. Zheljazkov, Jeliazkova, E. A., Kovacheva, N., and Dzhurmanski, A., Metal uptake by medicinal plant species grown in soils contaminated by a smelter, Environmental and Experimental Botany, vol. 64, no. 3, pp. 207 - 216, 2008.
V. D. Zheljazkov, Jeliazkova, E. A., Craker, L. E., Yankov, B., Georgieva, T., Kolev, T., Kovatcheva, N., Stanev, S., and Margina, A., HEAVY METAL UPTAKE BY MINT, Acta Horticulturae, no. 500, pp. 111 - 118, 1999.
V. D. Zheljazkov, Astatkie, T., Jeliazkova, E. A., Tatman, A. O., and Schlegel, V., Distillation time alters essential oil yield, composition and antioxidant activity of female Juniperus scopulorum trees, Journal of Essential Oil Research, vol. 25, no. 1, pp. 62 - 69, 2013.
V. D. Zheljazkov, Vick, B. A., M. Ebelhar, W., Buehring, N., Baldwin, B. S., Astatkie, T., and Miller, J. F., Yield, Oil Content, and Composition of Sunflower Grown at Multiple Locations in Mississippi, Agronomy Journal, vol. 100, no. 3, p. 635, 2008.
V. D. Zheljazkov and Zhalnov, I., Effect of Herbicides On Yield and Quality of Coriandrum sativum L., Journal of Essential Oil Research, vol. 7, no. 6, pp. 633 - 639, 1995.
V. D. Zheljazkov and Astatkie, T., Effect of distillation time on Mentha canadensis essential oil yield and composition, HortScience, vol. 47, no. 5, 2012.
V. D. Zheljazkov, Bowes, K. M., Patterson, K., and Sampson, G., Preemergence and postemergence herbicides for use in dill, fennel, coriander and basil., CANADIAN JOURNAL OF PLANT SCIENCE, vol. 86, no. 5, 2006.
V. D. Zheljazkov and Nielsen, N. E., Studies on the effect of heavy metals (Cd, Pb, Cu, Mn, Zn and Fe) upon the growth, productivity and quality of lavander (Lavandula vera DC) Production. , in 24th international symposium on essential oils, 1993.
V. D. Zheljazkov and Astatkie, T., Effect of residual distillation water of 15 plants and three plant hormones on Scotch spearmint (Mentha×gracilis Sole), Industrial Crops and Products, vol. 33, no. 3, pp. 704 - 709, 2011.
V. D. Zheljazkov and Warman, P. R., Source-separated municipal solid waste compost application to swiss chard and basil. Heavy metals in the environment, 2003.
V. D. Zheljazkov, Astatkie, T., Horgan, T., Schlegel, V., and Simonnet, X., Distillation time effect on essential oil yield, composition, and antioxidant capacity of sweet sagewort (Artemisia annua L.) Oil, HortScience, vol. 48, no. 10, 2013.
V. D. Zheljazkov, Cantrell, C. L., Astatkie, T., and M. Ebelhar, W., Productivity, Oil Content, and Composition of Two Spearmint Species in Mississippi, Agronomy Journal, vol. 102, no. 1, p. 129, 2010.
V. D. Zheljazkov, Cantrell, C. L., Ebelhar, W., Rowe, D., and Coker, C., Productivity, oil content, and oil composition of sweet basil as a function of nitrogen and sulfur fertilization, HortScience, vol. 43, no. 5, 2008.
V. D. Zheljazkov and Nielsen, N. E., Studies on the Effect of Heavy Metals (Cd, Pb, Cu, Mn, Zn and Fe) upon the Growth, Productivity and Quality of Lavender (Lavandula angustifolia Mill.) Production, Journal of Essential Oil Research, vol. 8, no. 3, pp. 259 - 274, 1996.
V. D. Zheljazkov, Cantrell, C. L., Astatkie, T., and Jeliazkova, E. A., Distillation Time Effect on Lavender Essential Oil Yield and Composition, Journal of Oleo Science, vol. 62, no. 4, pp. 195 - 199, 2013.
V. D. Zheljazkov and Cantrell, C. L., Productivity, content, and composition of the essential oil of three basil genotypes as a function of harvesting, HORTSCIENCE, vol. 42, no. 4, 2007.
V. D. Zheljazkov and Fair, P., STUDY OF THE EFFECT OF HIGHLY HEAVY METAL POLLUTED SOILS ON METAL UPTAKE AND DISTRIBUTION IN PLANTS FROM GENERA ARTEMISIA, DRACCOCEPHALUM, INULA, RUTA, AND SYMPHYTUM, Acta Horticulturae, no. 426, pp. 397 - 418, 1996.
V. D. Zheljazkov, Vick, B. A., Baldwin, B. S., Buehring, N., Astatkie, T., and Johnson, B., EFFECT OF PLANTING DATE, NITROGEN RATE, AND HYBRID ON SUNFLOWER, Journal of Plant Nutrition, vol. 35, no. 14, pp. 2198 - 2210, 2012.
V. D. Zheljazkov, Assessment of Wool Waste and Hair Waste as Soil Amendment and Nutrient Source, Journal of Environment Quality, vol. 34, no. 6, p. 2310, 2005.
V. D. Zheljazkov, Astatkie, T., Zhalnov, I., and Georgieva, T. D., Method for attaining rosemary essential oil with differential composition from dried or fresh material, Journal of Oleo Science, vol. 64, no. 5, pp. 485 - 496, 2015.
V. D. Zheljazkov, Cantrell, C. L., Ebelhar, W., and Rowe, D., Productivity, oil content, and oil composition of sweet basil as a function of nitrogen and sulphur fertilization, Hort. Sci, vol. 43, no. 5, 2008.
V. D. Zheljazkov, Cantrell, C. L., and Astatkies, T., Yield and Composition of Oil from Japanese Cornmint Fresh and Dry Material Harvested Successively, Agronomy Journal, vol. 102, no. 6, p. 1652, 2010.
V. D. Zheljazkov, Jones, A. M., Avula, B., Maddox, V., and Rowe, D., Lignan and nutrient concentrations in American Mayapple (Podophyllum peltatum L.) in the Eastern United States, HortScience, vol. 44, no. 2, 2009.

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