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Titolo:
Effects of soybean cultivation on the bacterial population dynamics in cerrado soils
Autore:
Pereira, JC; Neves, MCP; Gava, CAT;
Indirizzi:
EMBRAPA, CNPAB, BR-23851970 Seropedica, RJ, Brazil EMBRAPA Seropedica RJ Brazil BR-23851970 BC3851970 Seropedica, RJ, Brazil
Titolo Testata:
PESQUISA AGROPECUARIA BRASILEIRA
fascicolo: 6, volume: 35, anno: 2000,
pagine: 1183 - 1190
SICI:
0100-204X(200006)35:6<1183:EOSCOT>2.0.ZU;2-O
Fonte:
ISI
Lingua:
POR
Soggetto:
NONSTERILE SOIL; STERILE;
Keywords:
Glycine max; microbial densities; actinomycetes; antibiotics; streptomycin; chloramphenicol; soil microbiology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Pereira, JC EMBRAPA, CNPAB, Estrada Rio Sao Paulo,Km 47,Caixa Postal 74505, BR-23851970 Seropedica, RJ, Brazil EMBRAPA Estrada Rio Sao Paulo,Km 47,Caixa Postal 74505 Seropedica RJ Brazil BR-23851970 BC
Citazione:
J.C. Pereira et al., "Effects of soybean cultivation on the bacterial population dynamics in cerrado soils", PESQ AGROP, 35(6), 2000, pp. 1183-1190

Abstract

The effect of soybean cultivation on the population dynamics of the bacterial community was evaluated in two "Cerrado" soils of Sao Paulo State, Brazil. The experimental areas, in the vicinities of the cities of Sao Carlos and Barretos, were previously cultivated, respectively, with Paspalum notatum and Brachiaria decumbens. The bacterial population densities in these soils varied from 398.1 x 10(3) to 467.7 x 10(3) cfu (colony forming units) and from 123 x 10(3) to 218.8 x 10(3) cfu/g of dried soil, respectively, in Sao Carlos and Barretos soils. Soybean cultivation in both soils resulted inincrements in the total bacterial population density, in the actinomycetespopulation, and in the bacterial population resistant to the antibiotics streptomycin and chloramphenicol. Actinomycetes were present in these soils mainly as spores. Soybean cultivation did not alter the actinomycetes spores/hyphae ratio when comparing rhizospheric and non-rhizospheric soils. The results show that soybean cultivation affected the bacterial population of these soils.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 22:28:10