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Ciência e Agrotecnologia

versão impressa ISSN 1413-7054

Resumo

SANGALLI, Andréia; VIEIRA, Maria do Carmo  e  ZARATE, Néstor A. Heredia. Organic residue and nitrogen on the biomass production of nasturtium (Tropaeolum majus L.) 'Jewel'. Ciênc. agrotec. [online]. 2004, vol.28, n.4, pp.831-839. ISSN 1413-7054.  http://dx.doi.org/10.1590/S1413-70542004000400015.

The objective of this work was to evaluate growth, development and yield of Trapaeolum majus L. flowers as a function of the use of chicken manure and mixed organic residue associated or not with Nitrogen. The work was carried out at Medicinal Plant Garden - HPM of the Federal University of Mato Grosso do Sul - UFMS, in Dourados - MS, from May to October, 2002. Studied treatments were control (normal soil) - T, nitrogen (60 kg.ha-1 of N, in ammonia sulfate form) - N, chicken manure (15000 kg ha-1 of semi-decomposed chicken manure) - CF, chicken manure associated with nitrogen - CFN, mixed residue (15000 kg ha-1) - RM and mixed residue associated with nitrogen - RMN, which were established in a randomized experimental design with four replications. Evaluated characteristics were plant height, dried and fresh matter of aerial part without flowers, fresh and dried matter of flowers, flower diameter and height, N and P content in leaves and flowers. The highest plant height was of 36.33 cm in CF treatment. Plants from CFN treatment showed the greatest yield of fresh (52,195.69 kg.ha-1) and dried (6,281.14 kg.ha-1) matters of aerial parts without flowers, and of fresh (3,150.97 kg.ha-1) and dried (232.17 kg.ha-1) matters and number of flowers (50.49 millions.ha-1). Diameters and heights of flowers did not varied with treatments used. The highest contents of N (35.6 g kg-1) and of P (2.5 g kg-1) in leaves were with the use of CF. For flowers, the use of mixed residue associated with nitrogen - RMN resulted in 35.8 g kg-1 of N and the use of nitrogen - N in 3.9 g kg-1 of P.

Palavras-chave : Nasturtium; chicken manure; mixed organic residue; mineral nutrition; productivity.

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