BIOTIC COMPONENTS OF ONE RESEARCH SITE UNDER FOUR SOIL MANAGEMENT SYSTEMS

Authors

  • João Kluthcouski EMBRAPA Arroz e Feijão
  • Itamar Pereira de Oliveira EMBRAPA Arroz e Feijão
  • Antônio Luiz Fancelli ESALQ-USP
  • Durval Dourado Neto ESALQ-USP
  • Renato Sérgio Mota dos Santos UFG

Keywords:

Organic matter, soil pathogenic agents, no-till management

Abstract

Organic matter was studied in a savanna oxisol during two years, in Santa Helena, state of Goiás, Brazil, a traditional no-till management area, in which four soil management systems were developed: no-tillage (PD), deep moldboard plowing (AP), shallow harrow plowing (GA) and deep stirring, using a chiseling plower (EP). The dry matter from weed plants observed in the area produced 2369, 124, 243, 640 kg/ha in PD, AP, GA and EP, about 30 days after soil management, respectively. The organic matter was concentrated in the arable soil layer in areas where no-till management was adopted (PD) and was dispersed in larger depth in areas where deep plowing (AP) was used. Deep stirring (EP) behaved similarly to the no-till management (PD). Lower pH values were verified at arable surface under the no-till management. Larger number of fungi and bacteria, as well as of propagules of Rhizoctonia solani and Fusarium solani, were also observed in the no-tillage areas (PD).

KEY-WORDS: Organic matter; soil pathogenic agents; no-till management.

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Published

2007-12-13

How to Cite

KLUTHCOUSKI, J.; OLIVEIRA, I. P. de; FANCELLI, A. L.; DOURADO NETO, D.; SANTOS, R. S. M. dos. BIOTIC COMPONENTS OF ONE RESEARCH SITE UNDER FOUR SOIL MANAGEMENT SYSTEMS. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 29, n. 2, p. 33–41, 2007. Disponível em: https://revistas.ufg.br/pat/article/view/2838. Acesso em: 22 nov. 2024.

Issue

v. 29, n. 2, Jul./Dec. 1999

Section

Research Article

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