EFFECT OF ORGANIC AMENDMENTS ON QUALITY OF ORIENTAL TOBACCO KRUMOVGRAD 90 GROWN IN INDUSTRIALLY POLLUTED REGION (FIELD EXPERIMENT)
Published: 12 Sep 2020
Abstract: A comparative research on the impact of organic amendments on the uptake of heavy metals, micro and macroelements and quality of Oriental tobacco Krumovgrad 90 has been carried out. The experiment was performed on an agricultural field contaminated by the Non-Ferrous-Metal Works near Plovdiv, Bulgaria. The field experimental was a randomised complete block design containing five treatments (addition of 20 t/daa and 40 t/daa of vermicompost to the soil, addition of 20 t/daa and 40 t/da of compost to the soil and control variant). Upon reaching commercial ripeness, the tobacco plants were gathered. Heavy metal, micro and macroelement contents in leaves of Oriental tobacco were analysed by the method of the microwave mineralization. To determine the heavy metals, micro and macroelements in the samples, inductively coupled emission spectrometry was used. Tested organic amendments significantly influenced the uptake of heavy metals, micro and macroelements by the leaves of Oriental tobacco. The addition of compost and vermicompost resulting in increased uptake of macro elements potassium, calcium and magnesium, and leads to improvement of the life status of the Oriental tobacco plant, and has a beneficial effect on burning properties of tobacco.Organic amendments influence tobacco quality indicators (ash, protein and reducing sugars). Adding 40 t/daa compost and 40 t/daa vermicompost to soils leads to improved tobacco quality compared to the control. However, the introduction of 20 t/daa of compost and 20 t/daa of vermicompost into the soil results in lower quality tobacco (Schmuck number below 0.5).
Keywords: chemical composition, compost, vermicompost, oriental tobacco, polluted soils, quality
Cite this article: Violina R. Angelova, Venelina T. Popova. EFFECT OF ORGANIC AMENDMENTS ON QUALITY OF ORIENTAL TOBACCO KRUMOVGRAD 90 GROWN IN INDUSTRIALLY POLLUTED REGION (FIELD EXPERIMENT). Journal of International Scientific Publications: Ecology & Safety 14, 22-33 (2020). https://www.scientific-publications.net/en/article/1002033/
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