employee from 01.01.1993 to 01.01.2026
Krasnoyarsk
graduate student from 01.01.2021 to 01.01.2025
Russian Federation
VAK Russia 4.1.2
VAK Russia 4.1.3
VAK Russia 4.1.4
VAK Russia 4.1.5
VAK Russia 4.2.1
VAK Russia 4.2.2
VAK Russia 4.2.3
VAK Russia 4.2.4
VAK Russia 4.2.5
VAK Russia 4.3.3
VAK Russia 4.3.5
UDC 631.423
UDC 631.816.3
The aim of this study was to evaluate the effect of the microalgae Chlorella vulgaris and Arthrospira platensis on the content and reserves of mobile humic substances in agrochernozem during spring wheat cultivation. The research was conducted in a field trial in 2022–2023 at the Minderlinskoye Experimental Farm of Krasnoyarsk State Agrarian University. The subjects of the study were typical clay-illuvial agrochernozem, spring wheat variety Novosibirskaya 31, and biopreparations based on the microalgae Chlorella vulgaris and the cyanobacterium Arthrospira platensis in the form of suspensions and granules. It was shown that the seasonal dynamics of the transformation processes of water-soluble and alkali-hydrolyzable humus compounds in the 0–40 cm layer of agrochernozem had a different nature and proceeded with variable intensity (Cv = 6–35 %) depending on the form of biopreparations and hydrothermal conditions of the growing seasons. The maximum replenishment of the pool of mobile water-soluble carbon up to 30–29 mg C/100 g was revealed in the 0–20 cm layer of agrochernozem during foliar treatment of vegetative crops of spring wheat with Chlorella vulgaris and the application of Arthrospira platensis granules to the soil. Spraying plants with a suspension of Chlorella vulgaris determined the level of alkali-hydrolyzable carbon in the 0–20 cm soil layer close to the control variant (561–557 mg C/100 g). In the experimental variants using Chlorella vulgaris suspension and granules, more active formation of hydrolyzable carbon compounds was observed in the 20–40 cm layer of agrochernozem (543–535 mg C/100 g). The maximum proportion of stable humus reserves was revealed in the experimental variants using Arthrospira platensis granules (89–90 %), which is due to a decrease in the reserves of mobile humus compounds. The strength of the influence of the studied forms of biopreparations with microalgae on the content of water-soluble carbon in agrochernozem during spring wheat cultivation was estimated at 24–12 %, and alkali-hydrolyzable carbon – 40–38 %.
Chlorella vulgaris, Arthrospira platensis, humus, mobile humic substances, humus reserves, agrochernozem
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