Partial organic substitution weakens the negative effect of chemical fertilizer on soil micro-food webs
Soil biotic communities play vital roles in enhancing soil nutrient cycling and soil fertility. Long-term excessive nitrogen (N) application is disadvantageous to the stability of soil food webs and affects arable soil health and sustainable utilization. Proper organic substitution is essential to i...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-10-01
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| Series: | Journal of Integrative Agriculture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311922000521 |
| _version_ | 1811208700018294784 |
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| author | Han-wen LIU Xiao-ke ZHANG Gui-zong ZHANG Xin-chang KOU Wen-ju LIANG |
| author_facet | Han-wen LIU Xiao-ke ZHANG Gui-zong ZHANG Xin-chang KOU Wen-ju LIANG |
| author_sort | Han-wen LIU |
| collection | DOAJ |
| description | Soil biotic communities play vital roles in enhancing soil nutrient cycling and soil fertility. Long-term excessive nitrogen (N) application is disadvantageous to the stability of soil food webs and affects arable soil health and sustainable utilization. Proper organic substitution is essential to improve soil health and alleviate the disadvantages of excessive chemical fertilization. However, the biological effects of various organic amendments on soil micro-food webs are poorly understood. In order to explore the effects of various organic amendments including stover, biochar and manure on soil micro-food webs (microbial and nematode communities), a field plot experiment with maize having five treatments viz., 100% urea (100% N), 70% urea (70% N), 70% urea plus stover (Stover), 70% urea plus cattle manure (Manure) and 70% urea plus biochar (Biochar) was conducted. Manure treatment increased the carbon (C) to N use efficiency of soil microbes, which contributed to the retention of soil C, while Biochar treatment elevated soil organic C (SOC) and soil pH. Additionally, Biochar treatment mitigated the negative effects of soil acidification on the soil micro-food web and reduced the abundance of plant parasites. Overall, the biological effect of organic amendments was distinguished from chemical fertilization (100% N and 70% N) through principal co-ordinates analysis. Negative relationships among soil properties, microbial and nematode biomass in the 100% N treatment were diminished in treatments where chemical fertilizer was reduced. The bottom-up effects on soil food webs were observed in organic substitution treatments. In conclusion, organic amendments improved soil fertility by regulating soil microbial and nematode communities in the cropland ecosystem, alleviated the negative effects of chemical fertilizer on the micro-food webs and controlled the trophic cascades among soil biota. |
| first_indexed | 2024-04-12T04:26:00Z |
| format | Article |
| id | doaj.art-bca6a7d6fa0841168aa3e957576d21ed |
| institution | Directory Open Access Journal |
| issn | 2095-3119 |
| language | English |
| last_indexed | 2024-04-12T04:26:00Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj.art-bca6a7d6fa0841168aa3e957576d21ed2022-12-22T03:48:04ZengElsevierJournal of Integrative Agriculture2095-31192022-10-01211030373050Partial organic substitution weakens the negative effect of chemical fertilizer on soil micro-food websHan-wen LIU0Xiao-ke ZHANG1Gui-zong ZHANG2Xin-chang KOU3Wen-ju LIANG4Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, P.R.China; University of Chinese Academy of Sciences, Beijing 100049, P.R.China; LIU Han-wen, Mobile: +86-15524252563Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, P.R.China; Correspondence ZHANG Xiao-ke, Tel: +86-24-83970359Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, P.R.China; University of Chinese Academy of Sciences, Beijing 100049, P.R.ChinaSchool of Geographical Science, Northeast Normal University, Changchun 130024, P.R.ChinaInstitute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, P.R.China; Correspondence LIANG Wen-ju, Tel: +86-24-83970359Soil biotic communities play vital roles in enhancing soil nutrient cycling and soil fertility. Long-term excessive nitrogen (N) application is disadvantageous to the stability of soil food webs and affects arable soil health and sustainable utilization. Proper organic substitution is essential to improve soil health and alleviate the disadvantages of excessive chemical fertilization. However, the biological effects of various organic amendments on soil micro-food webs are poorly understood. In order to explore the effects of various organic amendments including stover, biochar and manure on soil micro-food webs (microbial and nematode communities), a field plot experiment with maize having five treatments viz., 100% urea (100% N), 70% urea (70% N), 70% urea plus stover (Stover), 70% urea plus cattle manure (Manure) and 70% urea plus biochar (Biochar) was conducted. Manure treatment increased the carbon (C) to N use efficiency of soil microbes, which contributed to the retention of soil C, while Biochar treatment elevated soil organic C (SOC) and soil pH. Additionally, Biochar treatment mitigated the negative effects of soil acidification on the soil micro-food web and reduced the abundance of plant parasites. Overall, the biological effect of organic amendments was distinguished from chemical fertilization (100% N and 70% N) through principal co-ordinates analysis. Negative relationships among soil properties, microbial and nematode biomass in the 100% N treatment were diminished in treatments where chemical fertilizer was reduced. The bottom-up effects on soil food webs were observed in organic substitution treatments. In conclusion, organic amendments improved soil fertility by regulating soil microbial and nematode communities in the cropland ecosystem, alleviated the negative effects of chemical fertilizer on the micro-food webs and controlled the trophic cascades among soil biota.http://www.sciencedirect.com/science/article/pii/S2095311922000521microbial communitynematode communitysoil micro-food websorganic substitutionchemical fertilizersoil health |
| spellingShingle | Han-wen LIU Xiao-ke ZHANG Gui-zong ZHANG Xin-chang KOU Wen-ju LIANG Partial organic substitution weakens the negative effect of chemical fertilizer on soil micro-food webs Journal of Integrative Agriculture microbial community nematode community soil micro-food webs organic substitution chemical fertilizer soil health |
| title | Partial organic substitution weakens the negative effect of chemical fertilizer on soil micro-food webs |
| title_full | Partial organic substitution weakens the negative effect of chemical fertilizer on soil micro-food webs |
| title_fullStr | Partial organic substitution weakens the negative effect of chemical fertilizer on soil micro-food webs |
| title_full_unstemmed | Partial organic substitution weakens the negative effect of chemical fertilizer on soil micro-food webs |
| title_short | Partial organic substitution weakens the negative effect of chemical fertilizer on soil micro-food webs |
| title_sort | partial organic substitution weakens the negative effect of chemical fertilizer on soil micro food webs |
| topic | microbial community nematode community soil micro-food webs organic substitution chemical fertilizer soil health |
| url | http://www.sciencedirect.com/science/article/pii/S2095311922000521 |
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