RELATIONS OF ORGANIC CARBON, TOTAL AND POTENTIALLY MINERALIZABLE NITROGEN WITH THE NITROGEN UPTAKEN BY MILLET

Authors

  • Wilian Henrique Diniz Buso
  • Huberto José Kliemann

Keywords:

Cerrados, organic carbon, nitrogen, mineralization potentials, cropping systems

Abstract

The present study was carried out in greenhouse to correlate soil organic carbon (OC), total nitrogen (Nt) and potentially mineralizable nitrogen (No – estimated by the hyperbolic, simple and the double exponential models) to nitrogen uptaken by millet. Stocks of OC, Nt and No, no matter which tillage systems have been used, are closely associated with soil texture. Losses in sandy soils are proportionally faster than in more clayey ones. The greatest CO, Nt and No losses occurred in the conventional tillage system; in the no-tillage system the stocks were gradually restored over the years. The No (estimated by the three models), OC and Nt values are closely correlated with nitrogen uptaken by millet, but no significant correlation was found with the easily mineralizable fraction of No estimated by the double exponential model.

KEY-WORDS: Cerrados; organic carbon; nitrogen; mineralization potentials; cropping systems.

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Author Biography

Wilian Henrique Diniz Buso

Engenheiro agrônomo, M. Sc., autônomo. Itapaci - GO. wilianbuso@yahoo.com

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Published

2007-11-12

How to Cite

BUSO, W. H. D.; KLIEMANN, H. J. RELATIONS OF ORGANIC CARBON, TOTAL AND POTENTIALLY MINERALIZABLE NITROGEN WITH THE NITROGEN UPTAKEN BY MILLET. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 33, n. 2, p. 97–105, 2007. Disponível em: https://revistas.ufg.br/pat/article/view/2359. Acesso em: 22 nov. 2024.

Issue

v. 33, n. 2, Jul./Dec. 2003

Section

Research Article

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