Data/hora: 21/09/2024 09:12:15

Biblioteca(s): 	Embrapa Arroz e Feijão; Embrapa Soja.	
Data corrente: 	30/09/2013	
Data da última atualização: 	31/10/2013	
Autoria: 	FAGERIA, N. K.; MOREIRA, A.; FERREIRA, E. P. B.; KNUPP, A. M.	
Afiliação: 	NAND KUMAR FAGERIA, CNPAF; ADONIS MOREIRA, CNPSO; ENDERSON PETRONIO DE BRITO FERREIRA, CNPAF; ADRIANO MOREIRA KNUPP, CNPAF.	
Título: 	Potassium-use efficiency in upland rice genotypes.	
Ano de publicação: 	2013	
Fonte/Imprenta: 	Communications in Soil Science and Plant Analysis, New York, v. 44, p. 2656-2665, 2013.	
ISSN: 	0010-3624	
DOI: 	10.1080/00103624.2013.813031	
Idioma: 	Inglês
Português	
Conteúdo: 	Potassium (K) uptake is greatest among essential nutrients for rice. Data related to yield, yield components, and K-use efficiency by upland rice genotypes are limited. A greenhouse experiment was conducted to evaluate influence of K on growth, yield and yield components, and K-use efficiency by upland rice genotypes. Potassium levels applied to an Oxisol were zero (natural K level) and 200 mg K kg1 of soil and 20 upland rice genotypes were evaluated. Plant height, shoot dry weight, grain yield, 1000-grain weight, and spikelet sterility were significantly affected by K and genotype treatments. Genotypes Primavera and BRA 1600 were the most efficient and genotype BRAMG Curinga was most inefficient in producing grain yield. Plant growth (plant height and shoot dry weight) and yield components (panicle number, grain harvest index, 1000-grain weight, and panicle length) were significantly and positively associated with grain yield. However, spikelet sterility was significantly and negatively correlated with grain yield.	
Thesagro: 	Arroz; Oryza sativa; Potássio.	
Thesaurus Nal: 	Potassium; Rice.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal
X Pesquisa, Tecnologia e Engenharia	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPAF - (32341-1) - UPC - AP - PP - 2013.056 -  - 2013.056 - DIS
CNPSO - (35054-1) - UPC - AP - DD -  -  -  - DIS