COMMON BEAN GROWTH AS AFFECTED BY TOPDRESSING NITROGEN RATES

Authors

  • Edvaldo Vieira Vieira Pacheco Sant'Ana
  • Pedro Marques da Silveira EMBRAPA

Keywords:

Phaseolus vulgaris, growth analysis, dry matter, leaf area index, physiological indexes

Abstract

This study was carried out with the objective to evaluate the effects of applied doses of topdressed nitrogen on the growth of common bean, cultivar BRS Horizonte. The experiment was conducted at the Embrapa Arroz e Feijão experimental station, Fazenda Capivara, Santo Antônio of Goiás, GO, in a distrophic red Latosol. The experimental design was a randomized complete block, with four replications and five doses of nitrogen, 0 kg ha-1, 30 kg ha-1, 60 kg ha-1, 120 kg ha-1, and 240 kg ha-1, applied half at ten days after emergency (10 DAE) and, the other half, at 17 DAE, in the form of urea. The effects of the treatments were evaluated by the analysis of plant growth. Significant behavior differences were observed in the common bean physiological indexes as response to increasing levels of N in topdressing. There was a significant positive correlation between duration of leaf area and grain yield.

KEY-WORDS: Phaseolus vulgaris; growth analysis; dry matter; leaf area index; physiological indexes.

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Author Biography

Pedro Marques da Silveira, EMBRAPA

Embrapa Arroz e Feijão, Cx. Postal 179, CEP 75375-000 Santo Antônio de Goiás, GO. Bolsista do Conselho Nacional
de Desenvolvimento Científico e Tecnológico ? CNPq. E-mail: pmarques@cnpaf.embrapa.br

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Published

2008-07-01

How to Cite

SANT’ANA, E. V. V. P.; SILVEIRA, P. M. da. COMMON BEAN GROWTH AS AFFECTED BY TOPDRESSING NITROGEN RATES. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 38, n. 2, p. 134–140, 2008. Disponível em: https://revistas.ufg.br/pat/article/view/4173. Acesso em: 16 aug. 2024.

Issue

v. 38, n. 2, Apr./Jun. 2008

Section

Research Article

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