Microbiological properties in cropping systems and their relationship with water erosion in the Brazilian Cerrado.

Many researchers have reported relationships of physical and chemical properties with water erosion; however, little is known about microbiological properties in this context. Thus, the aim of this study was to evaluate soil properties in relation to erosion in areas with different cropping system practices under no-tillage in the Brazilian Cerrado. The experiment has been carried out since 2014 in a Typic Haplustox under soybean (S) and maize (M) monoculture, maize/soybean annual rotation (MS), maize/brachiaria/soybean/brachiaria rotation (MBSB), two of those treatments with high input of fertilizer (MBSB-HI and MS-HI), and bare soil (BS). Soil losses were quantified in erosion plots. The design was completely randomized. The greater vegetation cover crop, provided by intercropping/succession with brachiaria, increased microbial biomass carbon. The lack of vegetation cover affected the basal soil respiration and metabolic quotient. Basal soil respiration proved to be inversely related to soil and water losses. Vegetation cover was a key factor regulating water erosion. Penetration resistance and aggregate stability correlated with soil and water losses. Thus, not only physical and chemical, but also biological properties are deeply affected by erosion, aiding in early monitoring of water erosion. Soil quality improvement in ecologically supported management contributes to mitigating erosion.

Bibliographic Details

Main Authors:	MERLO, M. N., AVANZI, J. C., SILVA, L. de C. M. da, ARAGÃO, O. O. da S., BORGHI, E., MOREIRA, F. M. de S., THEBALDI, M. S., RESENDE, A. V. de, SILVA, M. L. N., SILVA, B. M.
Other Authors:	MARINA NEVES MERLO, Universidade Federal de Lavras; JUNIOR CESAR AVANZI, Universidade Federal de Lavras; LUCAS DE CASTRO MOREIRA DA SILVA, Universidade Federal de Viçosa; OSNAR OBEDE DA SILVA ARAGÃO, Instituto Federal do Pará; EMERSON BORGHI, CNPMS; FATIMA MARIA DE SOUZA MOREIRA, Universidade Federal de Lavras; MICHAEL SILVEIRA THEBALDI, Universidade Federal de Lavras; ALVARO VILELA DE RESENDE, CNPMS; MARX LEANDRO NAVES SILVA, Universidade Federal de Lavras; BRUNO MONTOANI SILVA, Universidade Federal de Lavras.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2022-04-25
Subjects:	Basal soil respiration, Biomassa microbiana, Respiração basal do solo, Erosão do Solo, Biomassa, Planta de Cobertura, Plantio Direto, Soil erosion, Microbial biomass, Cover crops, No-tillage,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1142381 https://doi.org/10.3390/w14040614
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