DOI 10.36461/NP.2024.70.2.006
UDC 631.452+631.445.25+552.581+631.86

CHANGES IN THE FERTILITY OF GRAY FOREST SOIL WHEN USING SILICON-CONTAINING ROCK AND TURKEY MANURE
D.A. Lyulin, postgraduate student; A.N. Arefyev, Doctor of Agricultural Sciences, Associate Professor; E.N. Kuzin, Doctor of Agricultural Sciences, Professor; E.E. Kuzina, Candidate of Agricultural Sciences, Associate Professor
Penza State Agrarian University, Penza, Russia, tel. 8(412) 62-85-65, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

The aim of the research was to study the effect of silicon-containing rock (diatomite) from 4 to 10 t/ha in combination with two-fold application of litter turkey manure on the fertility of gray forest soil. Исследованиями установлено, что наиболее существенное влияние на накопление гумуса в пахотном слое серой лесной почвы оказало использование кремнийсодержащей породы (диатомит) в комплексе с подстилочным индюшиным пометом. The humus content in the arable layer while using that combination in 2022 varied from 4.10 to 4.17%, in 2023 – from 4.07 to 4.14%, exceeding the initial values in the agrocenosis of winter wheat by 0.20-0.25%, in the agrocenosis of corn by 0.17-0.22%. The usage of silicon-containing rock (diatomite) together with turkey litter increased the number of water-resistant structural aggregates in the arable layer of gray forest soil in relation to the initial one by 12.3–16.9% in 2022, and by 11.0-15.9% in 2023. The increase in relation to the control variant was significant and amounted to 12.5-16.8% in the agrocenosis of winter wheat, to 11.7–16.3% in the agrocenosis of corn. The highest effect on deoxidation of the arable layer of gray forest soil was provided by the integrated use of silicon-containing rock (diatomite) with turkey litter. In the agrocenosis of winter wheat in 2022, the pH of sol in these variants exceeded the initial values by 0.9-1.3 and in 2023 – by 0.7-1.2 units.
Keywords: silicon-containing rock, turkey droppings, gray forest soil, humus, water-stable aggregates, exchange acidity.

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