Sunflower, <em>Helianthus annuus</em>, response to sources and levels of boron

  • Marlene Estevão Marchetti UFMS
  • Wagner Rogério Motomya UFMS
  • Amoacy Carvalho Fabrício EMBRAPA
  • José Oscar Novelino UFMS
DOI: https://doi.org/10.4025/actasciagron.v23i0.2566

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
Published
2008-05-09
How to Cite
Marchetti, M. E., Motomya, W. R., Fabrício, A. C., & Novelino, J. O. (2008). Sunflower, <em>Helianthus annuus</em&gt;, response to sources and levels of boron. Acta Scientiarum. Agronomy, 23, 1107-1110. https://doi.org/10.4025/actasciagron.v23i0.2566
Issue
Vol 23 (2001)
Section
Agronomy

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2.0
2019CiteScore
 
 
60th percentile
Powered by  Scopus