Chitosan-coated compound fertilizer application and crop rotation alleviate continuous cotton cropping obstacles by modulating root exudates

Crop rotation combined with chitosan-coated compound fertilizer (CCCF) application could effectively solve continuous cropping obstacles (CtO), but how it affect crop root exudates to solve CtO remains unclear. In this study, soils (0–20 cm in depth) subjected to 20-years continuous cotton cropping...

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Bibliographic Details
Published in:Rhizosphere 2022-09, Vol.23, p.100581, Article 100581
Main Authors: Wang, Jingang, Tian, Tian, Wang, Haijiang, Cui, Jing, Shi, Xiaoyan, Song, Jianghui, Li, Tianshen, Li, Weidi, Zhong, Mingtao, Zhang, Wenxu
Format: Article
Language:English
Subjects:
Bacterial diversity
Chitosan
Continuous cropping
Crop rotation
Root exudates
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Summary:Crop rotation combined with chitosan-coated compound fertilizer (CCCF) application could effectively solve continuous cropping obstacles (CtO), but how it affect crop root exudates to solve CtO remains unclear. In this study, soils (0–20 cm in depth) subjected to 20-years continuous cotton cropping and 20-year cotton-maize-wheat rotation were collected and used for the four treatments including continuous cropping (Ct), continuous cropping combined with CCCF application (CtC), crop rotation (Rt), and crop rotation combined with CCCF application (RtC) in a pot experiment. The soil bacterial community structure was analyzed by sequencing technology, and the root exudates, soil nutrient contents, and enzyme activities were also measured. The results showed that soil nutrient availability and soil enzyme activities in the CtC, Rt, and RtC treatments significantly increased compared with those in the Ct treatment (p 
ISSN:2452-2198
2452-2198
DOI:10.1016/j.rhisph.2022.100581