Alterações microbiológicas, de fertilidade e de produtividade do arroz de terras altas em diferentes manejos de solo e água - DOI: 10.4025/actasciagron.v30i2.1788

Talles Eduardo Borges dos Santos; Fernando Takayuki Nakayama; Orivaldo Arf; Ana Maria Rodrigues Cassiolato

doi:10.4025/actasciagron.v30i2.1788

Microbiological, fertility and productivity alterations in upland rice under different soil and water managements - DOI: 10.4025/actasciagron.v30i2.1788

Talles Eduardo Borges dos Santos UNESP, Ilha Solteira
Fernando Takayuki Nakayama UNESP, Ilha Solteira
Orivaldo Arf UNESP, Ilha Solteira
Ana Maria Rodrigues Cassiolato UNESP, Ilha Solteira

DOI: https://doi.org/10.4025/actasciagron.v30i2.1788

Keywords: microbial activity, no-tillage, minimum tillage, arbuscular mycorrhizal fungi, irrigation

Abstract

In Brazil, the upland rice culture system is predominant, but its water supply depends of precipitation and its distribution. Some practices or disturbances on soil conditions may cause alterations that can be detected by microorganisms, which are quite sensitive. This experiment was developed to study microbiological alterations (microbial biomass carbon (MBC), released CO₂ (C-CO₂), metabolic quotient (qCO₂) and mycorrhization), as well as alterations in soil fertility and productivity of upland rice, cultivated under different soil and water managements. Cultivar BRS Talento was used in the experiment. The experimental design was a completely randomized block design, with four replications, using three soil managements: no-tillage (NT), heavy disk + leveling disk harrowing (HL), and chisel plowing + leveling disk harrowing (CL), plus three water managements: no irrigation (WD0); water depth 1 (WD1), with irrigation at the reproductive and maturation periods; and water depth 2 (WD2), with irrigation throughout the rice cycle. Autochthones arbuscular mycorrhizal fungi proved to be sensitive to soil and water management. The NT presented the highest values for MO, Ca, SB and V% and the lowest for H+Al. This management, together with irrigation at the reproductive and maturation periods of BRS Talento cultivar, promoted goods results for crop yield and microbiology characteristics

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Author Biography

Ana Maria Rodrigues Cassiolato, UNESP, Ilha Solteira

Possui graduação em Ciências Biológicas pela Universidade Estadual Paulista Júlio de Mesquita Filho (1983), mestrado em Agronomia (Microbiologia Agrícola) pela Universidade de São Paulo (1988) e doutorado em Agronomia (Genética e Melhoramento de Microrganismos) pela Universidade de São Paulo (1995). Atualmente é professor assistente doutor da Universidade Estadual Paulista Júlio de Mesquita Filho. Tem experiência na área de Microbiologia, com ênfase em Microbiologia e Bioquímica do Solo, atuando principalmente nos seguintes temas: indicadores de qualidade, fungos micorrízicos arbusculares, cerrado, recuperação de áreas degradadas, espécies arbóreas e resíduo orgânicos Currículo Lattes

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Published

2008-04-03

How to Cite

Santos, T. E. B. dos, Nakayama, F. T., Arf, O., & Cassiolato, A. M. R. (2008). Microbiological, fertility and productivity alterations in upland rice under different soil and water managements - DOI: 10.4025/actasciagron.v30i2.1788. Acta Scientiarum. Agronomy, 30(2), 203-209. https://doi.org/10.4025/actasciagron.v30i2.1788

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Issue

Vol 30 No 2 (2008)

Section

Crop Production

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