Biochar amendments improve soil functionalities, microbial community and reduce Pokkah boeng disease of sugarcane

作者：Shakeel Ahmad, Xuexin Zhai, Mengrong Wang, Yujie Shi, Yuemeng Chen, Qinming Liang, Bing He, Ronghui Wen · 发表于：Chemical and Biological Technologies in Agriculture · 年份：2024 · DOI：10.1186/s40538-024-00546-4 · 被引用次数：22 · 研究领域：Plant Pathogenic Bacteria Studies、Sugarcane Cultivation and Processing、Plant Disease Management Techniques

Abstract Background Biochar is mainly used to enhance soil fertility, microbial activity, improve plant performance and reduce disease incidence. Methods A greenhouse experiment was designed to investigate the response of biochar on rhizosphere soil chemical properties, enzyme activity, microbial communities, and sugarcane Pokkah boeng disease (PB). Two sugarcane varieties Zhongzhe 9 (Z9) and ROC22, susceptible/resistant to PB, were cultivated and treated with: no biochar, 15 t ha −1 biochar, and 30 t ha −1 biochar. Results The amendment of 30 t ha −1 of biochar (B2) significantly improve soil pH by 1.50% and 9.61% compared with that of B1 and B0, followed by 0.51% increase by 15 t ha −1 of biochar (B1) compared with that of control (B0). The application of 15 t ha −1 biochar significantly increased available phosphorus (AP) and ammonium nitrogen (NH 4 + –N) by 209.93 mg kg −1 and 12.1 mg kg −1 , while the application of 30 t ha −1 of biochar significantly increased 241.04 mg kg −1 of available potassium (AK) ( P < 0.05). Furthermore, biochar application increased the activities of soil acid phosphatase (S-ACP), urease (S-UE), and sucrase (S-SC). Alpha diversity analysis showed that the addition of biochar significantly altered the variety and abundance of rhizosphere microorganisms ( P < 0.01) and increased the relative abundance of beneficial microorganisms Rhodanobacteraceae , Stachybotryaceae , Agaricacea , Talaromyces , Nectriaceae , Sistotrema , and Bacillus ( P &...