Data/hora: 19/06/2024 17:09:31

Biblioteca(s): 	Embrapa Milho e Sorgo.	
Data corrente: 	27/01/2021	
Data da última atualização: 	15/03/2021	
Autoria: 	MACIEL, D. C.; PASSOS, A. M. A. dos; NETTO, D. A. M.; PARRELLA, N. N. L. D.; VITOR, C. M. T.; ROCHA, N. M.; ANTUNES NETO, A.; OLIVEIRA JÚNIOR, A. H. de.	
Afiliação: 	Danilo Cordeiro Maciel, Universidade Federal de São João del-Rei; ALEXANDRE MARTINS ABDAO DOS PASSOS, CNPMS; Dea Alécia Martins Netto, Pesquisadora aposentada, Embrapa Milho e Sorgo; Nádia Nardely Lacerda Durães Parrella, Universidade Federal de São João del-Rei; Cláudio Manoel Teixeira Vitor, Universidade Federal de São João del-Rei; Nayara Mourão Rocha, Universidade Federal de São João del-Rei; Antônio Antunes Neto, Universidade Federal de São João del-Rei; Afonso Henrique de Oliveira Júnior, Universidade Federal de São João del-Rei.	
Título: 	Levels of urea fertilizer on germination and vigor of Urochloa brizantha cv Piatã seeds.	
Ano de publicação: 	2020	
Fonte/Imprenta: 	International Journal of Development Research, v. 10, n. 12, p. 42537-42540, 2020.	
DOI: 	https://doi.org/10.37118/ijdr.20567.12.2020	
Idioma: 	Inglês	
Conteúdo: 	The use of high-quality seeds is a premise for the implantation of pasture under sustainable farming systems to livestock production. The usual practice is to mix Urochloa seeds with nitrogenous to use these inputs. The objective of this study was to evaluate the effect of contact time (0, 3, 6, 12, 24, 48, and 72 hours) and amounts (50, 100, and 150 kg N-1) of urea on Urochloa brizantha seeds physiological quality. A completely randomized experimental design was used, with three replicates. Seedling emergence, germination of normal and abnormal seedlings, and dead seeds were evaluated. It was found that after 3 hours of contact, all seeds lose quality. The number of dead seeds presented a significant (p <0.001) and negative correlation (91.7%) for the number of normal seedlings. The mix ratio between urea and seed affects the seed deterioration index, expressing lower seedlings emerged, concerning control treatment. The highest level of urea (150 kg N-1 ) decreased the emergence index by 23.3% related to the use lowest dose (50 kg N-1). It is concluded that the reduction in viability and vigor begins after 3 hours of contact with fertilizers, so the number of unviable seeds highly increases after 48-hours of contact.	
Palavras-Chave: 	Curativo lateral; Tecnologia de sementes.	
Thesagro: 	Brachiaria Brizantha; Deterioração; Germinação; Semente; Uréia.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/220662/1/Levels-urea.pdf	
Registro original: 	Embrapa Milho e Sorgo (CNPMS)	
Exemplares: 	CNPMS - (29483-1) - UPC - AP - DD -  -  -  - DIS