Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

Long-Term Changes in Soil Properties and Microbial Communities are Continuous Cropping Obstacles Associated with American Ginseng (Panax Quinquefolius L.) Cultivation

Version 1 : Received: 12 August 2020 / Approved: 13 August 2020 / Online: 13 August 2020 (11:19:26 CEST)
Version 2 : Received: 24 August 2020 / Approved: 25 August 2020 / Online: 25 August 2020 (05:12:11 CEST)

How to cite: Li, C.; Chen, G.; Zhang, J.; Bai, X.; Zhu, P.; Hou, Y.; Zhang, X. Long-Term Changes in Soil Properties and Microbial Communities are Continuous Cropping Obstacles Associated with American Ginseng (Panax Quinquefolius L.) Cultivation. Preprints 2020, 2020080300 (doi: 10.20944/preprints202008.0300.v2). Li, C.; Chen, G.; Zhang, J.; Bai, X.; Zhu, P.; Hou, Y.; Zhang, X. Long-Term Changes in Soil Properties and Microbial Communities are Continuous Cropping Obstacles Associated with American Ginseng (Panax Quinquefolius L.) Cultivation. Preprints 2020, 2020080300 (doi: 10.20944/preprints202008.0300.v2).

Abstract

This study aims to verify the time-variant feature of American ginseng (AG) continuous cropping obstacles and to explore the factors impeding continuous cropping. We verified the feature with a plant-soil feedback pot experiment and then investigated the factors by comparing the properties of control soils that had not been previously used for growing ginseng (CS) with those of soils with a 10-year-crop-rotation cycle following the growth of AG (RS). It’s found that the survival rate of AG in RS was lower than that in CS. The RS had lower pH, available potassium content, and urease activity. Additionally, p-coumaric, p-hydroxybenzoic, vanillic, caffeic, and cinnamic acid levels were lower in RS than in CS, but salicylic acid levels showed the opposite pattern. RS had higher Rhodanobacter and lower Acidothermus, Sphingomonas relative abundances in bacterial community. It’s also found that many bacteria were substantially correlated with phenolic acids and soil physiochemical properties. Results indicate that even after 10-year crop rotation, the negative effects of prior continuous cropping of AG has not been eliminated. The growth of AG can be affected negatively with deterioration of soil physicochemical properties and with lower levels of phenolic acids which promote pathogen reproduction. Probiotics reduction also weighs. Moreover, biotic factors are interrelated with abiotic ones. Therefore, it can be inferred that the comprehensive change of soil properties is the main obstacle for continuous cropping.

Subject Areas

continuous cropping obstacles; Panax quinquefolius L.; phenolic acids; soil bacterial community composition; soil nutrients

Comments (1)

Comment 1
Received: 25 August 2020
Commenter: Chongwei Li
Commenter's Conflict of Interests: Author
Comment: The introduction section has been slightly modified. In addition, the format of references is changed, and better references are provided for some method( reference number: 49,50,51). Table 3 is replaced by Table S3.
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