College of Agricultural Sciences

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, Astatkie, T., Caldwell, C. D., MacLeod, J., and Grimmett, M., “Compost, manure, and gypsum application to timothy/red clover forage”, J. Environ. Qual., vol. 35, pp. 2410-2418, 2006.

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, Astatkie, T., Shiwakoti, S., Poudyal, S., Horgan, T., Kovatcheva, N., and Dobreva, A., “Essential Oil Yield and Composition of Garden Sage as a Function of Different Steam Distillation Times”, HortScience, vol. 49, pp. 785-790, 2014.

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.

V. D. Zheljazkov, Cantrell, C. L., and Astatkie, T., “Yield and composition of Japanese cornmint fresh and dry material harvested successively ”, Agron J, vol. 102, pp. 1652-1656, 2010.

V. D. Zheljazkov, “Basil”, Plant Production, 1998.

V. D. Zheljazkov, Astatkie, T., and Jeliazkova, E. A., “Effect of foliar application of methyl jasmonate and extracts of juniper and sagebrush on essential oil yield and composition of ‘Native’ spearmint”, HortScience, vol. 48, no. 4, 2013.

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”, J. Essent. Oil Res., vol. 8, pp. 259-274, 1996.

V. D. Zheljazkov and Jekov, D., “Heavy metal content in some essential oils and plant extracts.”, Acta Hort. , vol. 426, pp. 427-433, 1996.

V. D. Zheljazkov, Astatkie, T., and Jeliazkova, E. A., “Effect of foliar application of methyl jasmonate and extracts of juniper and sagebrush on essential oil yield and composition of Native spearmint”, HortScience, vol. 48, pp. 462-465, 2013.

V. D. Zheljazkov, Craker, L. E., Xing, B., Nielsen, N. E., and Wilcox, A., “Aromatic plant production on metal contaminated soils”, Science of The Total Environment, vol. 395, no. 2-3, pp. 51 - 62, 2008.

V. D. Zheljazkov, Stratton, G. W., and Sturz, T., “Uncomposted wool and hair-wastes as soil amendments for high-value crops”, Agron J., vol. 100, pp. 1605-1614, 2008.

V. D. Zheljazkov, Yankuloff, Y., Raev, R. Tsevtkov, Stanev, S., Margina, A., and Kovatcheva, N., “Achievements in breeding on medicinal and aromatic plants in Bulgaria”, in Proceedings of the International Symposium: Breeding Research in Aromatic and Medicinal Plants, 1996.

V. D. Zheljazkov, Astatkie, T., and Schlegel, V., “Distillation time changes oregano essential oil yields and composition but not the antioxidant or antimicrobial activities”, HortScience, vol. 47, no. 6, 2012.

V. D. Zheljazkov, “Some elements of Sustainable Agriculture and their application in the United Kingdom agriculture. A review. ”, Higher Institute of Agriculture – Plovdiv, Scientific Works, vol. 39, pp. 255-261, 1994.

V. D. Zheljazkov, Astatkie, T., and Schlegel, V., “Effects of distillation time on Pinus Ponderosa essential oil Yield, composition, and antioxidant activity”, HortScience, vol. 47, pp. 785-789, 2012.

V. D. Zheljazkov, Patterson, K., Parsons, K. J., and Sampson, G., “Preemergence weed control in ornamental perennials.”, CANADIAN JOURNAL OF PLANT SCIENCE, vol. 86, no. 5, 2006.

V. D. Zheljazkov, Cantrell, C. L., Tekwani, B., and Khan, S., “Content, composition, and bio activity of the essential oil of three basil genotypes as a function of harvesting”, J. Agric. Food Chem. , vol. 56, pp. 380-385, 2008.

V. D. Zheljazkov and Margina, A., “EFFECT OF INCREASING DOSES OF FERTILIZER APPLICATION ON QUANTITATIVE AND QUALITATIVE CHARACTERS OF MINT”, Acta Horticulturae, no. 426, pp. 579 - 592, 1996.

V. D. Zheljazkov, Cantrell, C. L., and Astatkie, T., “Variation in podophyllotoxin concentration in leaves and rhizomes of American mayapple (Podophyllum peltatum L.)”, Industrial Crops and Products, vol. 33, no. 3, pp. 633 - 637, 2011.

V. D. Zheljazkov, Cantrell, C. L., Astatkie, T., and M. Ebelhar, W., “Peppermint Productivity and Oil Composition as a Function of Nitrogen, Growth Stage, and Harvest Time”, Agronomy Journal, vol. 102, no. 1, p. 124, 2010.

V. D. Zheljazkov, Cantrell, C. L., and Astatkie, T., “Variation in Podophyllotoxin Concentration in Leaves and Rhizomes of American mayapple (Podophyllum peltatum L.)”, vol. 33, pp. 633-637, 2011.