« Previous AbstractEffects of Delayed Mating on Mating Performance and Reproductive Fitness of the Willow Leaf Beetle (Coleoptera: Chrysomelidae) under Laboratory Conditions    Next AbstractExperimental and numerical investigation of TVOC concentrations and ventilation dilution in enclosed train cabin »

Sci Total Environ

Title:		Biochar increases Panax notoginseng's survival under continuous cropping by improving soil properties and microbial diversity
Author(s):		Zhao L; Xu W; Guan H; Wang K; Xiang P; Wei F; Yang S; Miao C; Ma LQ;
Address:		"Yunnan Provincial Observation and Research Station of Soil Degradation and Restoration for Cultivating Plateau Traditional Chinese Medicinal Plants, Yunnan Normal University, Kunming, Yunnan 650500, China. Yunnan Provincial Observation and Research Station of Soil Degradation and Restoration for Cultivating Plateau Traditional Chinese Medicinal Plants, Yunnan Normal University, Kunming, Yunnan 650500, China; Yunnan Provincial Renewable Energy Engineering Key Laboratory, Yunnan Normal University, Kunming, Yunnan 650500, China. Electronic address: xuwumei@ynnu.edu.cn. Yunnan Provincial Observation and Research Station of Soil Degradation and Restoration for Cultivating Plateau Traditional Chinese Medicinal Plants, Yunnan Normal University, Kunming, Yunnan 650500, China; Yunnan Provincial Renewable Energy Engineering Key Laboratory, Yunnan Normal University, Kunming, Yunnan 650500, China. Institute of Environmental Remediation and Human Health, Southwest Forestry University, Kunming, Yunnan 650224, China. Wenshan Miaoxiang Sanqi Technology Co., Ltd., Wenshan 663099, China. Yunnan Institute of Microbiology, Yunnan University, Kunming 650000, China. Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China. Electronic address: lqma@zju.edu.cn"
Journal Title:		Sci Total Environ
Year:		2022
Volume:		20220811
Issue:
Page Number:		157990 -
DOI:		10.1016/j.scitotenv.2022.157990
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"Replant problem is widespread in agricultural production and causes serious economic losses, which has limited sustainable cultivation of Panax notoginseng (PN), a well-known medicinal plant in Asia. Here we conducted a field experiment to investigate the effectiveness and possible mechanisms of biochar to improve its survival under continuous cropping. Biochar from tobacco stems was applied at 4 rates of 9.0, 12, 15, and 18 t/ha to a soil where PN has been continuously cultivated for 10 years. After 18 months, soil properties, 5 allelochemicals, including p-hydroxybenzoic acid, vanillic acid, syringic acid, p-coumaric acid, and ferulic acid, key pathogen Fusarium oxysporum, microbial community, and PN survival rate were investigated. Our results show that 10 years' continuous PN cropping led to soil acidification, accumulation of NH(4)(+)-N and F. oxysporum, and low PN survival rate. However, biochar increased its survival rate from 6.0% in the control to 69.5% under 15 t/ha treatment. Moreover, soil pH, available P and K, organic matter content, and microbial diversity were increased while NH(4)(+)-N and allelochemicals vanillic acid and syringic acid contents were decreased under biochar treatment (P<0.05). Soil available K increased from 177 to 283 mg.kg(-1) while NH(4)(+)-N decreased from 6.73 to 4.79 mg.kg(-1) under 15 t/ha treatment. Further, soil pH, available P and K, and microbial diversity (bacteria and fungi) were positively correlated with PN survival rate, however, NH(4)(+)-N content was negatively correlated (P<0.05). Our study indicates that biochar effectively increased the survival rate of Panax notoginseng under continuous cropping by improving soil properties and microbial diversity"
Keywords:		Biodiversity Charcoal Gallic Acid/analogs & derivatives *Panax notoginseng/microbiology Pheromones *Soil/chemistry Soil Microbiology Vanillic Acid Allelochemicals Microbial community Pathogen Fusarium oxysporum Replant problem Soil acidification Sustainab;
Notes:		"MedlineZhao, Linyan Xu, Wumei Guan, Huilin Wang, Kunyan Xiang, Ping Wei, Fugang Yang, Shaozhou Miao, Cuiping Ma, Lena Q eng Netherlands 2022/08/14 Sci Total Environ. 2022 Dec 1; 850:157990. doi: 10.1016/j.scitotenv.2022.157990. Epub 2022 Aug 11"