Data/hora: 13/06/2024 08:00:08

Provedor de dados: 	124	
País: 	Brazil	
Título: 	Nitrogen utilization efficiency by naturally colored cotton cultivars in semi-arid region	
Autores: 	Tartaglia,Francilene de Lima; Souza,Almir Rogerio Evangelista de; Santos,Allysson Pereira dos; Barros Júnior,Aurélio Paes; Silveira,Lindomar Maria da; Santos,Manoel Galdino dos.	
Data: 	2020-01-01	
Ano: 	2020	
Palavras-chave: 	Gossypium hirsutum L.; Recovery efficiency; Dry matter accumulation.	
Resumo: 	ABSTRACT Knowledge on nitrogen (N) utilization efficiency in colored cotton enables the correct management of N fertilizers, optimizing yield and minimizing environmental degradation.The objective of this study was to evaluate the N utilization efficiency and to determine the accumulation of dry matter and N by naturally colored cotton cultivars subjected to N fertilization in the Brazilian semi-arid region.The experiment was carried out under field conditions, at the Farm of the Federal Rural University of the Semi-Arid, in 2016 and 2017. The experimental design was in randomized blocks with split plots and four replicates, randomizing five N doses (0; 50; 100; 150 and 200 kg ha-1) in the main plot and four colored cotton cultivars (BRS Safira, BRS Rubi, BRS Topázio and BRS Verde) in the subplots. Dry matter and N accumulations, agronomic, recovery, agrophysiological and physiological efficiencies in N utilization, and harvest index were evaluated. Cotton accumulates around 130 kg ha-1 of N along its cycle and directs 56.3% to seeds, 29% to leaves, 10.6% to stem and 3.8% to fibers. Nitrogen agronomic efficiency and recovery efficiency decrease with increased N doses. The cultivar BRS Topázio is the most responsive to N fertilization and the cultivar BRS Verde is the least responsive.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400401	
Editor: 	Universidade Federal do Ceará	
Relação: 	10.5935/1806-6690.20200061	
Formato: 	text/html	
Fonte: 	Revista Ciência Agronômica  v.51 n.4 2020	
Fonte: 	info:eu-repo/semantics/openAccess