Data/hora: 27/05/2024 17:22:23

Biblioteca(s): 	Embrapa Algodão.	
Data corrente: 	09/02/2011	
Data da última atualização: 	09/03/2017	
Autoria: 	CARVALHO, M. C. S.; FERREIRA, A. C. de B.; SANTOS, F. C.	
Afiliação: 	MARIA DA CONCEICAO SANTANA CARVALHO, CNPAF; ALEXANDRE CUNHA DE B FERREIRA, CNPA; FLAVIA CRISTINA DOS SANTOS, CNPMS.	
Título: 	Timing of nitrogen fertilizer application in no-tillage cotton in Brazil.	
Ano de publicação: 	2010	
Fonte/Imprenta: 	In: WORLD FERTILIZER CONGRESS OF THE INTERNATIONAL SCIENTIFIC CENTRE FOR FERTILIZERS, 15., 2010, Bucharest. Meeting the fertilizer demand on a changing globe: biofuels, climate change, and contaminants. Bucharest: Academiei Române: The Publishing House of the Romanian Academy, 2010.	
Idioma: 	Inglês	
Conteúdo: 	This study aimed at evaluating the agronomic efficiency of nitrogen (N) fertilizers blended with urease inhibitor, nitrification inhibitor, and a slow-release polymer applied at different times in a no-till cotton crop as well as the possibility of reducing the number of broadcast applications using conventional and alternative N sources. The experiment was carried out in a complete randomized block design with four replications, in a (6x4)+1 factorial arrangement: six N sources (ammonium nitrate; urea; 50% urea + 50% ammonium sulfate; urea + urease inhibitor - NBPT; urea + slow-release polymer; and ammonium sulfonitrate + nitrification inhibitor - dimetil pirazol phosphate), four times of broadcast application (100% right after emergence; 50% right after emergence + 50% in phase B1 - first floral bud; 100% in phase B1; and 50% in phase B1 + 50% in phase F1 - first flower), and one control. None of the alternative N sources tested resulted in yields higher than the conventional sources (urea, ammonium nitrate, and ammonium sulfate). The highest yield was achieved when the N was applied earlier and split into two applications (50% right after emergence + 50% in phase B1). Single N application was more efficient only when using urea + slow-release polymer.	
Palavras-Chave: 	Inibidor de urease.	
Thesagro: 	Algodão; Gossypium Hirsutum.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Algodão (CNPA)	
Exemplares: 	CNPA - (25093-1) - UPC - PL - PP - SP 6775 -  - 10-050 - DIS