Dynamics of growth, yield and quality of the oriental tobacco variety Krumovgrad 56 depending on the level of mineral fertilization and food area
Keywords:
agricultural techniques; fertilization; food area; tobacco; yieldAbstract
The oriental tobacco variety Krumovgrad 56 was created by the method of inter-varietal hybridization in 2019. It has been conducted a complex agro-technical experiment. The influence of the nutrient area was tested formed by three intra-row planting distances and three fertilizer rates with combined mineral fertilizer NPK 15-15-15. The tests and research have shown that the rate of mineral fertilization directly affects the growth and development of oriental tobacco. Increasing the rate of fertilization leads both to accelerate the rate of growth and leaf formation, and to increase the size of the leaves of all harvests. The increase in the food area also has a positive effect on these indicators, but the correlation coefficients have not been statistically proven. The application of higher rates of mineral fertilization increases the average yield per decare, but leads to a degradation in the quality of the raw material obtained. Increasing planting distances reduces the yield per decare and degrades the quality of the raw material. A fertilization model has been established to direct the yield elements in the desired direction.
References
Bozhinova, R. (2004). Influence of crop density on the development and productivity of oriental tobacco origin Ustina. In: Proceedings of the Jubilee Scientific Conference "60 Years of ITTI", November 3-5, Plovdiv, 203-207 (Bg).
Bozhinova, R. & Zapryanova, P. (2005). Assimilation of nutrients from tobacco varieties Virginia and Burley. In: Proceedings of the Jubilee Scientific Conference "60 Years of ITTI", November 3-5, Plovdiv, 189-195 (Bg).
Lazarov, I. & Lazarov, F. (2011a). Potential of the selective science of tobacco in Bulgaria. Balgarski tyutyun, 3, 6-11(Bg).
Lazarov, I. & Lazarov, F. (2011b). Classification of Bulgarian varieties and origin of tobacco, corresponding to the European Union variety groups. Balgarski tyutyun, 4, 4-10 (Bg).
Stamatov, I. (2014). Elements of agrotechnology related withthe yield and quality of dried leaves in Oriental Tobacco variety Krumovgrad 944. In: Anniversary scientific conference with foreign participation „Science and education – traditions and future”, Kardzhali, 523-528 (Bg).
Stamatov, I. (2016). Variety reaction of Tobacco from ecotype Krumovgrad and Virginia to basic agrotechnical factors. Dissertation, Sadovo (Bg).
Stamatov, I., & Iantcheva, A. (2010). Influence of the major agro-factors upon the biological and economic features of the oriental tobacco. Rastenievadni nauki, 47(4), 326-330 (Bg).
Stamatov, I., & Yancheva, A. (2013). Influence of Fundamental Agro-Factures on the Dynamics of Growth and Leavegrowth under Oriental Tobacco Variety Krumovgrad 944. Rastenievadni nauki, 50, 68-71(Bg).
Stamatov, I. & Yancheva, A. (2014). Agrotechnical practices for increasing density of leaves of Oriental Tobacco. In: Yubileyna mezhdunarodna nauchna konferenciya „70 godini Institut po tyutyuna I tyutyunevite izdeliya”, Plovdiv, ISBN 978-954-702-103-7 (Bg).
Stankev, G. & Bozukov, Hr. (2015). Dupnitsa 160 and Dupnitsa 733 - new perespective varieties of Bulgarian Oriental Tobacco. Balgarski tyutyun, 3, 15-17 (Bg).
Perez, S., & Iordanov, V. (1970). Estudio sobere el uso de distinosmaterials como cobertores en los semilleros de tabako. Centro del tabaco de San Juan Y Martinez, Pinar del rio, 7-28.
Downloads
Published
License
Copyright (c) 2025 Bulgarian Journal of Crop Science
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
