Lâminas de água e adubação nitrogenada no crescimento e produção de gladíolos
Data
2012-12-18
Autores
Porto, Rebeca de Andrade
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Editor
Universidade Federal de Mato Grosso
Resumo
The gladiolus also known as Palma or Palma-de-Santa-Rita is
a cut flower very common used for home decoration. The objective of this
study was to evaluate the effect of replacement blades of water to field
capacity (50, 75, 100, 125, 150%) and doses of nitrogen (0, 30, 60, 90, 120
mg dm-3) on the yield behavior of the culture in a protected environment. The
specie studied was the Gladiolus x grandiflorus L., and its variety was
Whitefriendship. The design was randomized blocks in 5x5 factorial design
with four replications, totaling twenty and five treatments. The growth and
yield of gladiolus was characterized by the variables: number of leaves, plant
height, spike floral and floral stem length, number and diameter of flowers,
floral stem dry matter, total dry weight, SPAD reading, stomatal conductance,
number of days to silking and flowering, diameter and weight of bulbs,
number and weight of bulblets. Results were submitted to analysis of
variance by 5% probability by the F test, Pearson correlation and polynomial
regression, using statistical software as Sisvar and Sanest for data analysis.
It was observed effects of nitrogen fertilization only for variable dry flower
stem weight. For replacement blades of water responses were significant for
all parameters analysed. The irrigation management with replacement of the
water levels above 75% of field capacity gave for the floral stem length a
rating for commercial purposes. For the number of flowers replacement
blades of water up of 100% provide commercial superior classification. The
replacement blades of water up to 69% have produced bulbs with diameters
of better yield potential. There was no need for nitrogen fertilization in the
culture of gladiolus in Dystrophic Red soil from Savannah with the size of the
plated bulb.
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Citação
PORTO, Rebeca de Andrade. Lâminas de água e adubação nitrogenada no crescimento e produção de gladíolos. 2012. 79 f. Dissertação (Mestrado em Engenharia Agrícola) - Universidade Federal de Mato Grosso, Instituto de Ciências Agrárias e Tecnológicas, Rondonópolis, 2012.