Biblio
] , “Effect of Plant Date, Nitrogen Rate, and Hybrid on Sunflower”, Journal of Plant Nutrition, vol. 14, pp. 2198-2210, 2012.
, “Peppermint Productivity and Oil Composition as a Function of Nitrogen, Growth Stage, and Harvest Time”, Agronomy Journal, vol. 102, no. 1, p. 124, 2010.
, “Effect of heavy metals on peppermint and cornmint”, Plant and Soil, vol. 178, no. 1, pp. 59 - 66, 1996.
, “Changes in the quality of Mentha rhizome as depending on the time of overground mass harvesting and the method of weed control”, Higher Institute of Agriculture – Plovdiv, Scientific Works, vol. 37, pp. 239-247, 1992.
, “Comparison of three digestion methods for the recovery of 17 plant essential nutrients and trace elements from six composts”, Compost Sci. and Util., vol. 10, pp. 197-203, 2002.
, “Lavender and hyssop productivity, oil content, and bioactivity as a function of harvest time and drying”, Industrial Crops and Products, vol. 36, pp. 222-228, 2012.
, “Lavender and hyssop productivity, oil content, and bioactivity as a function of harvest time and drying”, Industrial Crops and Products, vol. 36, no. 1, pp. 222 - 228, 2012.
, “Achievements in breeding on medicinal and aromatic plants in Bulgaria”, Beitrage zur Zuchtungsforschung , vol. 2, pp. 142-145, 1996.
, “Effects of distillation time on Pinus Ponderosa essential oil Yield, composition, and antioxidant activity”, HortScience, vol. 47, pp. 785-789, 2012.
, “Yield and composition of Ocimum basilicum L. and Ocimum sanctum L. grown at four locations”, HortScience, vol. 43, no. 3, 2008.
, “Drying and Shade Effects on Spearmint Oil Yields and Composition”, HortScience, vol. 49, no. 3, 2014.
, “Effect of herbicides on yields and quality of Coriandrum sativum L. production.”, J. Essent. Oil Res., vol. 7, pp. 633-639, 1995.
, “Cultivar and sowing date effects on seed yield and oil composition of coriander in Atlantic Canada”, Industrial Crops and Products, vol. 28, pp. 88-94, 2008.
, “Application of High-Cu Compost to Dill and Peppermint”, Journal of Agricultural and Food Chemistry, vol. 52, no. 9, pp. 2615 - 2622, 2004.
, “Productivity, content, and composition of the essential oil of three basil genotypes as a function of harvesting”, HORTSCIENCE, vol. 42, no. 4, 2007.
, “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.
, “Study on the effect of highly heavy metal polluted soils on metal uptake and distribution in plants from genera Artemisia, Draccocephalum, Inula, Ruta, and Symphytum”, Acta Hort. , vol. 426, pp. 397-417, 1996.
, “Tolerance of bare-rot ornamental perennials to selected herbicides”, Can. J. Plant Sci. , pp. 439-442, 2007.
, “Effect of distillation time on Mentha canadensis essential oil yield and composition”, HortScience, vol. 47, pp. 643-647, 2012.
, “Essential Oil Composition and Yield of Anise from Different Distillation Times”, HortScience, vol. 48, pp. 1393-1396, 2013.
, “Herbicides for Weed Control in Blessed Thistle (Silybum Marianum)”, Weed Technology, vol. 31, no. 3, pp. 1030 - 1034, 2006.
, “Scanning electron microscopy investigation on the spermoderma of grown in Bulgaria cultivars from genus Salvia, Lavandula, and Ocimum”, Acta Hort. , vol. 426, pp. 473-482, 1996.
, “Effect of Residual Distillation Water of 15 Plants and Three Plant Hormones on Scotch Spearmint (Mentha x gracilis Sole)”, Industrial Crops and Products, vol. 33, pp. 704-709, 2011.
, “Effect of heavy metal polluted soils on some qualitative and quantitative characters of mint and cornmint”, Essential Oils: Basic and Applied Research, 1997.