Título:	Productivity and quality of Brachiaria brizantha B4 seeds in function of nitrogen doses.
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.
Ano de publicação:	2016
Referência:	Ciência Rural, Santa Maria, v. 46, n. 9, p. 1566-1571, set. 2016
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.
Thesagro:	Adubação Forrageira tropical
NAL Thesaurus:	Fertilizers Seed quality Phenology
Palavras-chave:	Qualidade de sementes Tropical forage Embrapa Gado de Corte
Notas:	Título em português: Produtividade e qualidade de sementes de Brachiaria brizantha B4 em função de doses de nitrogênio.
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPGC)