%0 Journal Article
%T Efficiency of Utilization of Nitrogen Coated with Urease Inhibitor in Maize
%A Ricardo S. Okumura
%A Daiane de C. Mariano
%A Paulo V.C. Zaccheo
%A Amanda N. de Albuquerque
%J Pakistan Journal of Biological Sciences
%D 2013
%I Asian Network for Scientific Information
%X This study aimed to evaluate under field conditions the efficiency in the use of N coated with urease inhibitor in maize. The experiment was conducted in the year of 2007/2008. The experimental design was a randomized block design in a factorial 2 x 6, with five repetitions, constituted the N sources (common and coated with urease inhibitor) and levels (0, 40, 80, 120, 160 and 200 kg ha-1 of N) sidedressing nitrogen application in the growth stage V4. Based on the data obtained were determined recovery efficiencies, utilization, agronomic and physiological N applied. In all cases, the efficiency levels for maize were influenced by levels of sidedressing nitrogen application, in which increasing levels of N resulted in a decrease of the efficiencies, regardless of the source being common urea or coated with urease inhibitor.
%K NBPT
%K sidedressing nitrogen application
%K Zea mays L.
%K agronomic efficiency
%U http://docsdrive.com/pdfs/ansinet/pjbs/2013/871-876.pdf