Data/hora: 24/09/2024 09:13:33

Biblioteca(s): 	Embrapa Gado de Corte.	
Data corrente: 	20/02/2018	
Data da última atualização: 	21/02/2018	
Autoria: 	BENTEO, G. de L.; VERZIGNASSI, J. R.; FERNANDES, C. D.; VALLE, C. B. do; MACEDO, M. C. M.; LIBÓRIO, C. B. de; MOTEIRO, L. C.	
Afiliação: 	Gleiciane de Lima Benteo, Instituto Federal Goiano - IFG; JAQUELINE ROSEMEIRE VERZIGNASSI, CNPGC; CELSO DORNELAS FERNANDES, CNPGC; CACILDA BORGES DO VALLE, CNPGC; MANUEL CLAUDIO MOTTA MACEDO, CNPGC; Cláudia Barrios de Libório, Instituto Federal Goiano - IFG; Lenise Castilho Monteiro, Instituto Federal Goiano - IFG.	
Título: 	Productivity and quality of Brachiaria brizantha B4 seeds in function of nitrogen doses.	
Ano de publicação: 	2016	
Fonte/Imprenta: 	Ciência Rural, Santa Maria, v. 46, n. 9, p. 1566-1571, set. 2016	
Idioma: 	Inglês	
Notas: 	Título em português: Produtividade e qualidade de sementes de Brachiaria brizantha B4 em função de doses de nitrogênio.	
Conteúdo: 	This study aimed to evaluate aspects of reproductive phenology, yield components and seed quality of the B4 genotype of Brachiaria brizantha in function of nitrogen doses applied at pre-flowering. The experiment was carried out at Embrapa Beef Cattle, in a randomized block design, with seeding density of 2.59kg SPV ha-1 in the first year, in free growth plants. Urea was applied at pre-flowering at doses of 0, 25, 50, 75, 100, 125 and 150kg ha-1. The reproductive cycle of the plant lasts 225 days, with late flowering. N doses influenced the following characteristics: number of fully expanded inflorescences, percentage of dry matter, dry biomass, number of spikelets per raceme, seed yield, weight of a thousand seeds, germination, germination speed index, viability and germination at 10 months after harvest. The maximum yield of pure seed was 144.8kg ha-1 for 50kg ha-1 N, with maximum biological potential, based on components of seed yield of 456.27kg ha-1. Seeds presented high dormancy and reduced physiological quality in higher N doses.	
Palavras-Chave: 	Embrapa Gado de Corte; Qualidade de sementes; Tropical forage.	
Thesagro: 	Adubação; Forrageira tropical.	
Thesaurus Nal: 	Fertilizers; Phenology; Seed quality.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/172874/1/15-Productivity-and-quality-of-Brachiaria-brizantha-B4-seeds-in-function-of-nitrogen-doses-2016.pdf	
Registro original: 	Embrapa Gado de Corte (CNPGC)	
Exemplares: 	CNPGC - (17041-1) - UPC - AP - DD -  -  -  - DIS