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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.
V. D. Zheljazkov and WARMAN, P., Application of high Cu compost to Swiss chard and basil, The Science of The Total Environment, vol. 302, no. 1-3, pp. 13 - 26, 2003.
V. D. Zheljazkov, Astatkie, T., O'Brocki, B., and Jeliazkova, E. A., Essential oil composition and yield of anise from different distillation times, HortScience, vol. 48, no. 11, 2013.
V. D. Zheljazkov, Kovatcheva, N., Stanev, S., and Zheljazkova, E., Effect of heavy metal polluted soils on some qualitative and quantitative characters of mint and cornmint, Essential Oils: Basic and Applied Research, 1997.
V. D. Zheljazkov, Vick, B., Ebelhar, W., Buehring, N., and Astatkie, T., Effect of N on yield and chemical profile of winter canola in Mississippi, Journal of Oleo Science, vol. 62, no. 7, pp. 453 - 458, 2013.
V. D. Zheljazkov and Zhalnov, I., Effect of herbicides on yields and quality of Coriandrum sativum L. production., J. Essent. Oil Res., vol. 7, pp. 633-639, 1995.
V. D. Zheljazkov, Astatkie, T., O'Brocki, B., and Jeliazkova, E. A., Essential Oil Composition and Yield of Anise from Different Distillation Times, HortScience, vol. 48, pp. 1393-1396, 2013.
V. D. Zheljazkov, Silva, J. L., Patel, M., Stojanovic, J., Lu, Y., Kim, T., and Horgan, T., Human hair as a nutrient source for horticultural crops, HortTechnology, vol. 18, no. 4, 2008.
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, Agron J, vol. 102, pp. 124-128, 2010.
V. D. Zheljazkov, Cantrell, C. L., M. 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, pp. 1415-1422, 2008.
V. D. Zheljazkov and Terziisky, D., SCANNING ELECTRON MICROSCOPY INVESTIGATION ON THE SPERMODERMA OF GROWN IN BULGARIA CULTIVARS FROM GENUS SALVIA, LAVANDULA, AND OCIMUM, Acta Horticulturae, no. 426, pp. 473 - 482, 1996.
V. D. Zheljazkov, Vick, B., M. Ebelhar, W., Buehring, N., and Astatkie, T., Nitrogen applications modify seed and oil yields and fatty acid composition of winter mustard, Industrial Crops and Products, vol. 36, no. 1, pp. 28 - 32, 2012.
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, Beitrage zur Zuchtungsforschung , vol. 2, pp. 142-145, 1996.
V. D. Zheljazkov, Cantrell, C. L., Astatkie, T., and Jeliazkova, E. A., Fall frosts effects on the essential oil of "Native" spearmint in Wyoming, HortScience, vol. 11, pp. 1603-1606, 2012.
V. D. Zheljazkov, Cantrell, C. L., Ebelhar, W., Coker, C., and Evans, W., Quality assessment and yield of Baikal skullcap (Scutellaria baicalensis) grown at multiple locations, HortScience, vol. 42, no. 5, 2007.
V. D. Zheljazkov, Zhalnov, I., and Nedkov, N. K., Herbicides for weed control in blessed thistle (Silybum marianum), Weed Technology, vol. 20, pp. 1030-1034, 2006.
V. D. Zheljazkov, Yankov, B., and Topalov, V., Development and Productivity of Mentha piperita and M. arvensis var. piperascens Grown for Planting Material, J. Essent. Oil. Res, 1996.
V. D. Zheljazkov, Vick, B. A., Baldwin, B. S., Buehring, N., Coker, C., Astatkie, T., and Johnson, B., Oil productivity and composition of sunflower as a function of hybrid and planting date, Industrial Crops and Products, vol. 33, no. 2, pp. 537 - 543, 2011.
V. D. Zheljazkov and Topalov, V., The effect of the method of propagation and the planting density on the essential oil chemical composition in Mentha piperita Huds. and Mentha arvensis L. , Higher Institute of Agriculture – Plovdiv, Scientific Works, vol. 36, pp. 25-31, 1991.
V. D. Zheljazkov and Astatkie, T., Distillation waste water can modify peppermint (Mentha x piperita L.) oil composition, Industrial Crops and Products, vol. 36, pp. 420-426, 2012.
V. D. Zheljazkov, Jeliazkova, E. A., and Nedkov, N. K., Wool and Hair Waste as Nutrient Source for High-value Crops, HortScience, vol. 41, no. 4, 2006.
V. D. Zheljazkov, Gawde, A., Cantrell, C. L., Astatkie, T., and Schlegel, V., Distillation Time as Tool for Improved Antimalarial Activity and Differential Oil Composition of Cumin Seed Oil, PLOS ONE, vol. 10, no. 12, p. e0144120, 2015.
V. D. Zheljazkov and Topalov, V., Effect of Planting Time and Density of Yields from Rooted Mint Cuttings, J. Herbs Spices & Medicinal Plants, vol. 4, pp. 15-24, 1996.
V. D. Zheljazkov, Astatkie, T., and Schlegel, V., Hydrodistillation Extraction Time Effect on Essential Oil Yield, Composition, and Bioactivity of Coriander Oil, Journal of Oleo Science, vol. 60, pp. 335-342, 2014.

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