Resposta do girassol, Helianthus annuus, a fontes e níveis de boro

Marlene Estevão Marchetti; Wagner Rogério Motomya; Amoacy Carvalho Fabrício; José Oscar Novelino

doi:10.4025/actasciagron.v23i0.2566

Sunflower, Helianthus annuus, response to sources and levels of boron

Authors

Marlene Estevão Marchetti UFMS Author
Wagner Rogério Motomya UFMS Author
Amoacy Carvalho Fabrício EMBRAPA Author
José Oscar Novelino UFMS Author

DOI:

https://doi.org/10.4025/actasciagron.v23i0.2566

Keywords:

azometina H, ácido bórico, bórax

Abstract

Effect of sources and levels of boron for sunflower, Helianthus annuus (Asteraceae) in a greenhouse environment is provided. The experimental design was completely randomized with two sources of boron (boric acid and borax), four doses (0.0; 1.0; 2.0 and 4.0 mg.dm^-3) and four replications. Seeds were germinated in vases with 5.8 dm^-3 and, after paring, two plants remained in each pot. Boron and a nutritive solution with macro and micronutrients were applied. Plants were collected at flowering, root and stem were separated to assess dry matter. After drying, boron level by azomethine H colorimeter method was determined. Dried mass yield was influenced by boron addition and dose 1.0 mg.dm^-3 provided the best yield. Borax was more efficient for sunflower boron supply when source is taken into account

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Author Biography

Marlene Estevão Marchetti, UFMS

Graduada em Agronomia pela Escola Superior de Agronomia de Paraguaçu Paulista (1977), mestrado em Solos e Nutrição de Plantas pela Escola Superior de Agricultura Luiz de Queiróz/USP (1988) e doutorado em Solos e Nutrição de Plantas pela Escola Superior de Agricultura Luiz de Queiróz/USP (1993). Atualmente é professor Associado I da Universidade Federal da Grande Dourados. Tem experiência na área de Agronomia, com ênfase em Fertilidade do Solo, Adubação e Nutrição Mineral de Plantas Currículo Lattes

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Published

2008-05-09

Issue

Vol. 23 (2001)

Section

Agronomy

License

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I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal.

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

How to Cite

Marchetti, M. E., Motomya, W. R., Fabrício, A. C., & Novelino, J. O. (2008). Sunflower, Helianthus annuus, response to sources and levels of boron. Acta Scientiarum. Agronomy, 23, 1107-1110. https://doi.org/10.4025/actasciagron.v23i0.2566