Morphogenetic characteristics of the Brachiaria brizantha cv. Marandu submitted to nitrogen doses
DOI:
https://doi.org/10.22256/pubvet.v9n6.262-270Keywords:
Leaf appearance rate, leaf elongation rate, number of live leavesAbstract
The objective of this study was to evaluate the morphogenetic and structural characteristics of Brachiaria brizantha cv. Marandu, subjected to five levels of nitrogen with cutting interval of 35 days. The work was conducted in the period May to June and October to November of 2011, in the experimental field of Embrapa Meio-Norte UEP - Parnaíba, in the municipality of Parnaíba , Piauí . The experimental design was randomized blocks with treatments consisting of five levels of nitrogen (0, 250, 500, 750 and 1,000 kg ha- 1.year- 1) with four replications. The morphogenetic evaluations included the rates of appearance, elongation and leaf senescence. Structural consisted of the number of live unfolded leaves and total number of leaves. Nitrogen, in the form of urea, was applied to coverage being applied immediately after the three cuts, by dividing the total annual dose by the number of cuts. Nitrogen fertilization in Brachiaria brizantha has a positive effect on elongation and leaf appearance rates, and the total number of living leaves.
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Copyright (c) 2015 Edineudo Mourão da Silva, Alex Carvalho Andrade, João Avelar Magalhães, Braz Henrique Nunes Rodrigues, Antônio Bruno Bitencourt Oliveira, Francisco José de Seixas Santos, Newton de Lucena Costa, Eduardo Esmeraldo Augusto Bezerra
This work is licensed under a Creative Commons Attribution 4.0 International License.
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