Productivity of Digitaria grass in different doses of nitrogen

Authors

  • Newton de Lucena Costa Embrapa Roraima
  • Antônio Bruno Bitencourt Oliveira
  • Alex Carvalho Andrade
  • João Avelar Magalhães
  • Braz Henrique Nunes Rodrigues
  • Herony Ulisses Mehl
  • Francisco José de Seixas Santos
  • Edineudo Mourão da Silva
  • Carlos Antônio Araújo Costa

DOI:

https://doi.org/10.22256/pubvet.v9n2.70-75

Keywords:

Dry matter, light interception, plant height

Abstract

The objective of this study was to evaluate the effects of different doses of nitrogen on the productivity of grass digitaria (Digitaria sp.) The experiment was conducted from April to July 2012 at the Experimental Station of Embrapa Meio-Norte, located in the city of Parnaíba, Piauí.The experimental design was completely randomized with four treatments and five replications consisting of nitrogen levels (T1 – 200; T2 – 400; T3 – 600 and T4 - 800 kg N ha-1 year-1). Three cuts at intervals of 28 days each were realized. The variables evaluated were: grass plant height, production and dry matter content, penetration and absorption of light, the leaf blade/stem and dead material and efficiency of nitrogen use. Nitrogen fertilization promoted a decrease in dry matter, nitrogen use efficiency, light penetration and leaf/stem + sheath, and influenced positively in plant height, dry matter production and light interception in grass digitaria depending on the doses N applied.

Published

2015-07-03

Issue

Section

Pastagem e forragicultura

How to Cite

Productivity of Digitaria grass in different doses of nitrogen. (2015). Pubvet, 9(02). https://doi.org/10.22256/pubvet.v9n2.70-75

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