MINERAL COMPOSITION OF WHEAT GRAINS SUBJECTED TO AMMONIUM SULFATE AND TRINEXAPAC-ETHYL RATES

Authors

  • Marcelo Curitiba Espindula Universidade Federal de Viçosa
  • Marcela Campanharo UENF
  • Valterley Soares Rocha UFV
  • Pedro Henrique Monnerat UFV
  • Luiz Fernando Favarato UFV

Keywords:

Triticum aestivum L., nutrition, growth retardant

Abstract

Grain mineral composition is important for the establishment of appropriate fertilizer levels, as well as to define the nutritional quality of food and physiological quality of seeds. The objective of this study was to evaluate the effect of ammonium sulfate (AS) and trinexapac-ethyl rates on mineral composition of wheat grains (Triticum aestivum L.) cv. Pioneiro. The experiment was carried out in Viçosa, Minas Gerais State, Brazil, from June to October 2006. The treatments consisted of five AS rates (150 kg ha-1, 300 kg ha-1, 450 kg ha-1, 600 kg ha-1, and 750 kg ha-1) combined with four trinexapac-ethyl rates (0 g ha-1, 62.5 g ha-1, 125 g ha-1, and 187.5 g ha-1). The experiment was arranged in a randomized block design with four replications. AS rates increased the concentrations of total-N (protein), Ca, S, Cu, and Zn and decreased the concentrations of P, K, and Mn (at AS rates above 457 kg ha-1). The Mg and Fe concentrations were not influenced by AS rates. Trinexapac-ethyl increased total-N, P, and Mn; reduced Ca; and had no influence on the concentrations of K, S, Cu, Zn, Mg, and Fe. It can be concluded that AS application improves the nutritional quality of grains, while the use of the growth retardant trinexapac-ethyl has no influence on its mineral composition.

KEY-WORDS: Triticum aestivum L.; nutrition; growth retardant.

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Author Biography

Marcelo Curitiba Espindula, Universidade Federal de Viçosa

Possui curso técnico-profissionalizante em agropecuária pela Escola Agrotécnica Federal de Colatina (1998), graduação em Agronomia pela Universidade Federal do Espírito Santo (2004), Mestrado e doutorado em Fitotecnia/Produção vegetal pela Universidade Federal de Viçosa (2007 e 2010, respectivamente). Tem experiência na área de Agronomia, com ênfase Fitotecnia atuando principalmente nos seguintes temas: Nutrição mineral de plantas, Adubação nitrogenada, Reguadores de crescimento, Qualidade fisológica de sementes, Triticum aestivum.

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Published

2010-12-21

How to Cite

ESPINDULA, M. C.; CAMPANHARO, M.; ROCHA, V. S.; MONNERAT, P. H.; FAVARATO, L. F. MINERAL COMPOSITION OF WHEAT GRAINS SUBJECTED TO AMMONIUM SULFATE AND TRINEXAPAC-ETHYL RATES. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 40, n. 4, p. 513–520, 2010. Disponível em: https://revistas.ufg.br/pat/article/view/6928. Acesso em: 23 nov. 2024.

Issue

v. 40, n. 4, Oct./Dec. 2010

Section

Crop Science

License

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