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Horticultura Brasileira

versão impressa ISSN 0102-0536versão On-line ISSN 1806-9991

Resumo

TRANI, Paulo E.; CANTARELLA, Heitor  e  TIVELLI, Sebastião W.. Table beet yield depending on rates of ammonium sulphate applied as side dressing. Hortic. Bras. [online]. 2005, vol.23, n.3, pp.726-730. ISSN 0102-0536.  http://dx.doi.org/10.1590/S0102-05362005000300007.

Three field experiments were carried out in two locations in São Paulo State, Brazil, to evaluate the total root and above ground yields of table beets under different nitrogen rates. One experiment was carried out in Monte Alegre do Sul on a Typic Kandaudult and the others in Campinas on a Typic Hapludox. The experimental design was of complete randomized blocks with six replications. Nitrogen rates varying from zero to 200 kg ha-1 were split in two applications using ammonium sulphate. In the first field trial the maximum root yield of table beets was reached with 92 kg of N ha-1, in the second with 179 kg of N.ha-1, and in the third with 151 kg of N.ha-1. The yield response of above ground to N application in all experiments was linear and positive. The highest yield of table beets for sale on bunches (roots and leaves) was obtained when the maximum rate of N was applied (200 kg N ha-1). In all three experiments a linear and positive relationship was found between rates of N applied and N content on roots and above ground.

Palavras-chave : Beta vulgaris L.; side dressing nitrogen rates; N content in table beets.

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