Growth indicators of medium-early tomato production of Nikolina F1 depending on irrigation rate and applied fertilization
Emil Volodiev Dimitrov, Ivanka Mitova, Vesela Petrova-Branicheva, Vaselina Vasileva
Abstract: An experiment was carried out with tomato variety “Nikolina F1” on leached cinnamon forest soil in two years (2018 and 2019) differing in climatic terms. The influence of the factors irrigation rate and fertilization on the growth indicators, as well as the correlation dependences between yields and growth indicators in tomato variety Nikolina F1, mid-early outdoor production, was investigated. The experiment contains 8 variants at two irrigation rates (1-4 variants - 100% FC; 5-8 variants- 50% FC) and increasing levels of fertilization (T1 and T5 - no fertilization; T2 and T6 - N15P8K15; T3 and T7 - N20P12K20; T4 and T8 - N25P16K25). The research found that the growth indicators (mass and number of leaves per plant, plant height, stem diameter, number of branches per plant), except for the mass of stems in the ripening phase, reached the highest values when fertilized with N25P16K25. The percentage participation of the fertilization factor is most pronounced in the formation of the growth indicators and especially of the leaf mass of the plants, and of the irrigation and the combined influence of the tested factors on the stem diameter of the tomato plants. Significant correlation dependences of yield on plant heights were reported. A high correlation dependence of the yield on the diameters of the plant stems during the years of study was also established.
Keywords: correlation dependences; fruiting onset; growth parameters; outdoor cultivation; tomatoes
Citation: Dimitrov, E. V., Mitova, I., Petrova-Branicheva, V., & Vasileva, V. (2025). Растежни показатели при средно ранно производство на домати Николина F1, в зависимост от поливната норма и приложено торене. Bulgarian Journal of Soil Science Agrochemisty and Ecology, 59(20), 39-50 (Bg).
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| Date published: 2025-06-25
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