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AGRICULTURE, AGROCHEMICAL, FEED PRODUCTION, AGROECOLOGY

CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION

Akhylbek Kurishbaev 1 , Dilmurat Yerzhan 2 , Ismail Tokbergenov 3 , Zhanna Almanova 4 , Gregory Zvyagin 5 , Islambek Kakimbek 4 , Gulayim Aymukhambet 2

1 National Academy of Sciences of the Republic of Kazakhstan, President of the National Academy of Sciences of the Republic of Kazakhstan; 2 NJSC «Kazakh National Agrarian Research University» ; 3 National Academy of Sciences of the Republic of Kazakhstan under the President of the Republic of Kazakhstan; 4 Non-commercial Joint Stock Company "National Academy of Sciences of the Republic of Kazakhstan under the President of the Republic of Kazakhstan"; 5 Kazakh Agrotechnical Research University named after S. Seifullin

doi.org/10.37884/2-2025/37 pp. 375-383 Admitted 18.04.2025 Published 30.06.2025

Abstract

A field experiment conducted on typical chernozem soils of Kostanay Region investigated the effects of different soil tillage systems and crop types on the content of organic carbon, total nitrogen, and the fractional composition of humus. The study was carried out on spring wheat, pea crops, and fallow land under traditional and zero tillage (No-Till) systems. A correlation analysis was performed between the contents of organic carbon and total nitrogen, as well as between humic acid carbon (HAC) and fulvic acid carbon (FAC). It was found that the No-Till system generally promotes the accumulation of soil organic matter. A strong positive correlation between organic carbon and total nitrogen was observed in fallow soils (r = 0.78), and a close relationship was found between HAC and FAC (r = 0.978). The findings contribute to a deeper understanding of the mechanisms of organic matter accumulation and the influence of agrotechnologies on the carbon-nitrogen balance in soils.

soil organic carbon total soil nitrogen HAC/FAC ratio conventional tillage No-Till agrotechnologies humus fractional composition

01 Introduction

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Citation Links

[1]2025. CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION. Izdenister natigeler. 2 (106) (Jun. 2025), 375–383. DOI:https://doi.org/10.37884/2-2025/37.
(1)CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION. Izdenister natigeler 2025, No. 2 (106), 375-383. https://doi.org/10.37884/2-2025/37.
CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION. (2025). Izdenister Natigeler, 2 (106), 375-383. https://doi.org/10.37884/2-2025/37
CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION. Izdenister natigeler, [S. l.], n. 2 (106), p. 375–383, 2025. DOI: 10.37884/2-2025/37. Disponível em: https://kazvetjournal.kaznaru.edu.kz/index.php/research/article/view/955. Acesso em: 15 sep. 2026.
“CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION”. 2025. Izdenister Natigeler, no. 2 (106) (June): 375-83. https://doi.org/10.37884/2-2025/37.
“CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION” (2025) Izdenister natigeler, (2 (106), pp. 375–383. doi:10.37884/2-2025/37.
[1]“CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION”, Izdenister natigeler, no. 2 (106), pp. 375–383, Jun. 2025, doi: 10.37884/2-2025/37.
“CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION”. Izdenister Natigeler, no. 2 (106), June 2025, pp. 375-83, https://doi.org/10.37884/2-2025/37.
“CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION”. Izdenister natigeler, no. 2 (106) (June 30, 2025): 375–383. Accessed September 15, 2026. https://kazvetjournal.kaznaru.edu.kz/index.php/research/article/view/955.
1.CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION. Izdenister natigeler [Internet]. 2025 Jun. 30 [cited 2026 Sep. 15];(2 (106):375-83. Available from: https://kazvetjournal.kaznaru.edu.kz/index.php/research/article/view/955
1.CORRELATION ANALYSIS OF CHANGES IN ORGANIC CARBON AND HUMUS COMPONENTS UNDER VARIOUS AGRICULTURAL TECHNOLOGIES IN ORDINARY CHERNOZEMS OF KOSTANAY REGION. Izdenister natigeler. 2025;(2 (106):375-383. doi:10.37884/2-2025/37