L. P. Ikoeva
North Caucasus Scientific Research Institute of Mountain and Foothill Agriculture – branch of the Federal Center “Vladikavkaz Scientific Center of the Russian Academy of Sciences”, Mikhaylovskoe village, Republic of North Ossetia – Alania, Russia
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Volume 25 No. 3
Date of paper submission: 18.08.2024, date of review: 26.11.2024, date of acceptance: 20.01.2025.
Published: 03/31/2025
Abstract. The purpose of this study is to examine the impact of leaf fertilization with humic preparation “Bigus, BP” and microfertilizer “Nutrivant Plus” on the reaction of photosynthetic pigments and yield of potatoes of different varieties. The objective of this study is to examine the impact of leaf fertilization with humic preparation “Bigus, BP” and microfertilizer “Nutrivant Plus” on the photosynthetic pigments and yield of potatoes of different varieties. Methods. The studies were conducted from 2021 to 2023 in accordance with the accepted methods for the forest-steppe zone of the Republic of North Ossetia-Alania on an experimental field with a leached, mediumwet chernozem soil. The concentration of photosynthetic pigments in potato leaves was quantified through a spectrophotometric approach, employing wavelengths of 662, 644 and 440 nm. Scientific novelty The potential for the use of humic preparation “Bigus, BP” and microfertilizer “Nutrivant Plus” in potato plantings in the foreststeppe zone to increase tuber yield was demonstrated. Results. The positive impact of a foliar treatment with a biopreparation on chlorophyll content was observed in all experimental variants. The total chlorophyll (a + b) content in green potato leaves across all experimental variants was 49.1; 46.5 and 51.0 mg/l in the Farn variety, respectively. This was 8.7; 6.1 and 10.7 mg/l higher than the control, which received no biopreparation treatment. The total chlorophyll content of the Nevskiy variety was 28.9; 32.3 and 42.9 mg/l, which was 3,4; 9.2 and 14 mg/l higher than the control, respectively. The yield of potatoes on variety Farn on the experimental variants ranged from 28.0 to 32.6 t/ha, representing a 21.6 % increase compared to the control, which yielded 24.1 t/ha. The potato variety Nevskiy demonstrated yields ranging from 26.8 to 30.4 t/ha across all experimental variants, exceeding the control average by 17.8 %. The highest yield was observed in the joint treatment with the growth regulator “Bigus, BP”, and the microfertilizer “Nutrivant Plus”. A reliable average dependence (r = 0,71) was revealed between the concentration of chlorophyll b in leaf plates and potato yield.
Keywords: potato, bio-preparations, chlorophyll, photosynthesis pigments, Nevskiy variety, Fern variety, yield
For citation: Ikoeva L.P. Response of photosynthetic pigments and yield of different potato varieties to foliar treatment with biopreparations. Agrarian Bulletin of the Urals. 2025; 25 (03): 371‒380. https://doi.org/10.32417/1997-4868-2025-25-03-371-380 (In Russ.)
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