Nitrogen doses in rice grown in a tropical lowland

Lopes, Marilia Barcelos Souza; Oliveira, Taynar Coelho de; Ramos, Danilo Pereira; Tonello, Leila Paula; Alexandrino, Cassia Mara dos Santos; Fidelis, Rodrigo Ribeiro

DSpace Principal
→
Colección de los Centros Asociados
→
Brasil
→
Núcleo de Pesquisa sobre Crianças, Adolescestes e Jovens - Universidade Federal do Piauí - NUPEC/UFPI - Cosecha
→
Ver ítem

dc.creator	Lopes, Marilia Barcelos Souza
dc.creator	Oliveira, Taynar Coelho de
dc.creator	Ramos, Danilo Pereira
dc.creator	Tonello, Leila Paula
dc.creator	Alexandrino, Cassia Mara dos Santos
dc.creator	Fidelis, Rodrigo Ribeiro
dc.date	2015-12-29
dc.date.accessioned	2022-03-21T20:07:36Z
dc.date.available	2022-03-21T20:07:36Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/984
dc.identifier	10.14295/cs.v6i4.984
dc.identifier.uri	http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/77753
dc.description	The rice plant is characterized by having high nutrient demand, being nitrogen (N) the main limiting factor to its productivity. The objective of this study was to evaluate the response of two rice cultivars according to doses of nitrogen fertilization. The experiment was carried out in an irrigated lowland area with hydromorphic soil (humic gleysol) at the region of Formoso do Araguaia-TO, Brazil. The experiment design consisted of five N doses (30, 60, 90, 120 and 150 kg ha -1) applied as urea, and two rice cultivars (Irga-424 and Irga-423). Each experimental plot consisted of twenty-seven lines with 15 m in length, spaced 0.17 m between rows. The useful plot size was made up of four central lines with two linear meters of length. The evaluated characteristics were plant height, number of panicles per m2 , grain yield in kg ha -1, hundred grain mass in g, nitrogen content in dag kg-1, and total chlorophyll index in CFI. Data were submitted to variance analysis and regression at 5% probability by F test. The maximum yield was obtained at a dose of 96 and 126.38 kg N ha -1 for Irga- 424 and Irga-423, respectively. The highest grain yield was 7800 and 5860 kg ha -1 for Irga-424 and Irga-423, respectively.	pt-BR
dc.format	application/pdf
dc.language	eng
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/984/359
dc.rights	Copyright (c) 2016 Marilia Barcelos Souza Lopes, Taynar Coelho de Oliveira, Danilo Pereira Ramos, Leila Paula Tonello, Cassia Mara dos Santos Alexandrino, Rodrigo Ribeiro Fidelis	en-US
dc.source	Comunicata Scientiae; Vol. 6 No. 4 (2015); 404-411	en-US
dc.source	Comunicata Scientiae; v. 6 n. 4 (2015); 404-411	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.subject	Oryza sativa L.	pt-BR
dc.subject	nitrogen	pt-BR
dc.subject	dose	pt-BR
dc.subject	grain yield	pt-BR
dc.title	Nitrogen doses in rice grown in a tropical lowland	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion