INFLUENCE OF BIOSTIMULANTS ON MORPHOGENESIS AND PRODUCTIVITY OF CARROT

O. A. Shevchuk, O. O. Tkachuk, O. O. Khodanitska, S. V. Polyvanyi, O. A. Matviychuk, S. D. Kryklyva

Abstract


This article comparatively characterizes the impact of various concentrations of humic preparations on the morphogenesis, yield, and storability of carrot roots (Daucus carota L.). We evaluated their stimulating effects on laboratory germination, seed vigor, seedling morphometric parameters, root crop biometric characteristics, overall yield, standard product output, and root storability. The laboratory experiment was conducted at the research laboratory of plant physiology and biochemistry, part of the biology department at Vinnytsia Mykhailo Kotsiubynskyi State Pedagogical University. The field experiment utilized Nantes variety carrots grown under small-plot experimental conditions. We treated seeds with two humic preparations: Humisol-plus 0.5 Vegetable and Potassium Humate, each at concentrations of 0.001 %, 0.005 %, and 0.01 %. Both Humisol-plus 0.5 Vegetable and Potassium Humate, across the tested concentrations, increased laboratory germination and seed vigor of carrot seeds. Seed Germination: Humisol-plus 0.5 Vegetable at a low concentration (0.005 %) had a greater impact, increasing germination by 19.0 % compared to the control. Potassium Humate at a concentration of 0.001 % showed an even more significant increase of 32.0 %. Seedling Dry Weight: the highest increase in seedling dry weight (by 28.6 %) was observed with Humisol-plus 0.5 Vegetable at a concentration of 0.005 %. Root Weight: pre-sowing seed treatment with Humisol-plus 0.5 Vegetable (0.005 %) increased carrot root weight by 17.7 %. Potassium Humate (0.001 %) increased root weight by 6.0% compared to the control. Standard Product Output: with Humisol-plus 0.5 Vegetable, the standard product output of carrot roots ranged from 69 % to 80 %. For Potassium Humate, it ranged from 58 % to 67 %. The best standard product output indicators were achieved when using biostimulants at a concentration of 0.001 %. Storability: treatment with humic preparations improved the storability of carrot roots. After 60 days of storage, carrot root weight loss in the biostimulant variants was 4 %, significantly less than the 6 % observed in the control group. Conclusion: Pre-sowing seed treatment of carrots with humic preparations shows promise as an effective component in vegetable crop cultivation technology.

Keywords


humic preparations; morphogenesis; yield; seed productivity; carrot; storability

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DOI: https://doi.org/10.25128/2078-2357.25.1-2.8

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