Biochar combined with magnesium fertilizer improves cabbage (Brassica oleraceae L.) yield by modulating physicochemical characteristics and the bacterial community in acidic soil

• DOI: 10.1111/sum.12938
• Publication Date: 2023-07-07T18:49:58Z
• Authors: Hongzhao Li; Tongbo Yan; Tianhong Fu; Yongzhou Hao; Jing Li; Yi Tan; Zhen Li; Yutao Peng; Xiao Chen; Jingjing Chang; Zhao Song; Min Yu; Xuewen Li; Yalin Li; Shiwei Song; Baige Zhang
• Keywords: 2. Zero hunger; 0401 agriculture, forestry, and fisheries; 04 agricultural and veterinary sciences; 15. Life on land

Abstract Biochar and magnesium (Mg) fertilizers have gained increasing attention in agriculture for their potential benefits. However, combined effects on vegetable growth southern acidic soils not been fully elucidated. To address this issue, a study was conducted with six treatments all of which included baseline amount compound fertilizer (CK), an increased (F), Mg (M), biochar (BC), (BCM) F (FM), to investigate synergistic soil physicochemical properties, enzyme activity, microorganisms cabbage yield. The results the showed that compared CK, M, BC BCM organic matter (SOM), exchangeable (Ex‐Mg), acid phosphatase (ACP) yield, while treatment led 5% decrease SOM. significantly SOM, Ex‐Mg, ACP by 14%, 40%, 25%, respectively. most abundant phyla processing were Proteobacteria (21%), Chloroflexi (19%) Actinomycetes (17%); genera Bacillus (8%). Further, effect crop promotion better than FM, economic analysis benefit 14%. Through structural equation modelling analysis, increase yield because TP, NO 3 − –N β‐GC caused BCM, improving nutrients microbial communities, thereby promoting growth. Therefore, application could improve fertility productivity, also reducing need costly chemical fertilizers, offering promising cost‐effective approach sustainable agriculture.