Cinza vegetal como corretivo e fertilizante no cultivo de capim-marandu em solos do cerrado mato-grossense
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Data
2013-12-06
Autores
Bezerra, Maria Débora Loiola
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Universidade Federal de Mato Grosso
Resumo
The vegetable ash is one alternative of fertilizant and
corrective of soil positively influencing the production of marandu grass. The
objective was to evaluate the response of Brachiaria brizanta cv. Marandu to
the application of vegetable ash in two class of soils (Oxisol and Ultisol). The
experiment was conducted in a greenhouse in the period December 2012 to
May 2013. The experimental design was completely randomized in a 2x6
factorial, corresponding to two classes of soils (Oxisol and Ultisol) and six
doses of vegetable ash (0; 3; 6; 9; 12 and 15 g dm-3) and six replications. We
used pots with soil volume of 5 dm3 with five plants. Were made three cuts in
shoot of the plants in an interval of 30 days and by occasion of each cutting
was evaluated height plant, number of leaves and of tillers; shoot dry mass of
leaves, stems and root (only in the third and last cut); leafs/stems ratio;
SPAD reading; pH of the soil by occasion of planting and of cuts marandu
grass. The results were submitted to analysis of variance by F test and when
significant, the qualitative factors (soil classes) submitted to the Tukey test
and the quantitative factors (doses of vegetable ash) submitted to regression
analysis, both 5% probability, using the Statistical Program SISVAR. The
marandu grass, in general, presented greater results in development, growth
and yield when grown in Ultisol fertilized with the dose of 15 g dm-3 of
vegetable ash, whereas in Oxisol were obtained in the interval of doses of
vegetable ash of 9-15 g dm-3.
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BEZERRA, Maria Débora Loiola. Cinza vegetal como corretivo e fertilizante no cultivo de capim-marandu em solos do cerrado mato-grossense. 2013. 63 f. Dissertação (Mestrado em Engenharia Agrícola) - Universidade Federal de Mato Grosso, Instituto de Ciências Agrárias e Tecnológicas, Rondonópolis, 2013.