Data/hora: 09/06/2024 18:21:35

Provedor de dados: 	90	
País: 	Brazil	
Título: 	Response of irrigated wheat cultivars to different nitrogen rates and sources	
Autores: 	Teixeira Filho,Marcelo Carvalho Minhoto; Buzetti,Salatiér; Andreotti,Marcelo; Sá,Marco Eustáquio de; Arf,Orivaldo; Megda,Márcio Mohamed.	
Data: 	2009-10-01	
Ano: 	2009	
Palavras-chave: 	Triticum aestivum L.; Savannah soil; Entec; Urea; Grain yield; Yield components.	
Resumo: 	High wheat yields require good N fertilization management. The objective of this study was to evaluate the effects of different N applications at sowing using Entec (N source with nitrification inhibitor) and urea (traditional N source) at covering, on four wheat cultivars. The experiment was conducted in a randomized block design in a factorial scheme, with four replications, at the Experimental Station of the Faculdade de Engenharia de Ilha Solteira - UNESP, on a dystrophic, epi-eutrophic alic Red Latosol with loamy texture, formerly under savannah vegetation. Four N rates (0, 60, 120, and 180 kg ha-1) were tested, applied at sowing in the case of Entec and top-dressed 40 days after plant emergence in the case of urea, and the four wheat cultivars E 21, E 22, E 42, and IAC 370. The yield of the wheat cultivars E 21 and E 42 was highest. Plant height and lodging index of cultivar E 22 were greatest, with consequently lowest grain yield. There was no significant difference between Entec (applied at sowing) and urea (top-dressed) in terms of grain yield and yield components. Nevertheless, urea resulted in a higher N leaf content, and Entec in a larger number of undeveloped spikelets. High nitrogen rates influenced the hectoliter mass negatively, affecting wheat grain quality. Grain yield increased under N rates of up to 82 kg ha-1 N, through Entec applied at sowing or top-dressed urea.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000500023	
Editor: 	Sociedade Brasileira de Ciência do Solo	
Relação: 	10.1590/S0100-06832009000500023	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Ciência do Solo  v.33 n.5 2009	
Fonte: 	info:eu-repo/semantics/openAccess