@article{article26e4cb37,
title   = {Utilization of nitrogen (15N) from urea and green manures by rice as affected by nitrogen fertilizer rate},
author = {Contreras Espinal, Freddy Sinencio and Silva, Edson Cabral da and Muraoka, Takashi and Franzini, Vinícius Ide and Trivelin, Paulo Cesar Ocheuze and Teixeira, Marconi Batista and Sakadevan, Karuppan},
year = {2016},
doi = {10.5897/ajar2015.10684},
journal   = {African Journal of Agricultural Research}
}