期刊
FEMS MICROBIOLOGY ECOLOGY
卷 97, 期 2, 页码 -出版社
OXFORD UNIV PRESS
DOI: 10.1093/femsec/fiaa258
关键词
sustainability; service crops; PLFA; enzymatic activities; microorganisms
类别
资金
- National Institute of Agricultural Technology (INTA) [PD I 037]
- National Council for Scientific and Technical Research (CONICET)
The study found that introducing B. brizantha as a service crop in degraded farmland can significantly improve the physical, chemical, and biological properties of the soil, reduce disease incidence, and aid in the recovery of degraded agricultural ecosystems.
Intensive agricultural practices have resulted in progressive soil degradation, with consequences on soil ecosystem services. The inclusion of service crops is a promising alternative to support the sustainability of the agricultural system. The aim of this study was to analyze in a six-year field experiment the effect of Brachiaria brizantha (perennial tropical grass and Zea mays as service crops in a degraded common bean monoculture system in northwest Argentina. After six years, service crop treatments revealed a significant increase in most physical, chemical and biological properties of the soil (enzyme activities, microbial biomass, respiration and glomalin-related soil protein), compared with common bean monoculture. Also, a lower disease incidence was observed under B. brizantha treatments, associated with increased populations of Trichoderma spp. and Glioclaclium spp. The phospholipid fatty acid profiles detected higher values of total microbial biomass under service crops. Our results suggest that the inclusion of several cycles of B. brizantha constitutes a promising soil management for recovering degraded agroecosystems.
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