Effects of different soil management practices on soil free-living nematode community structure, Eastern China

Daofeng Dong, Yun Feng Chen, Yosef Steinberger, Zhi Ping Cao

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

An investigation was conducted in a Shouguang agroecosystem, Shandong Province, Eastern China, in order to determine the long-term (10-15 yr) disturbances of three different agricultural management practices. In this study, the main focus was on free-living soil nematodes, as a tool which will help differentiate between treatments according to their sensitivity to physical, chemical, and biota composition. In this study, three treatments were implemented in each of a total of four investigated sites: greenhouses, conventional farmlands, and fallows. Diversity, maturity (MI) and weight indices were used to assess the nematode community. The results indicated that greenhouses have a lower richness (SR), diversity, modified maturity index (ΣMI), modified maturity index for all nematodes with c-p = 2-5 [ΣMI (2-5)], plant parasite index (PPI), PPI/MI values, and fungi-feeding/bacteria- feeding (F/B) ratio, as well as lower basal index (BI) and channel index (CI) and higher dominance. These results elucidated the difference between the three treatments, where the greenhouses were an enriched disturbed system compared with the other treatments and were dominated by bacterivorous nematodes, the fallows were a relatively infertile and stable system dominated by plant parasites, and the conventional farmlands can be positioned between the above two treatments.

Original languageEnglish
Pages (from-to)115-127
Number of pages13
JournalCanadian Journal of Soil Science
Volume88
Issue number1
DOIs
StatePublished - Feb 2008

Keywords

  • Agricultural management
  • Disturbance
  • Indices
  • Nematode

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