Data/hora: 01/06/2024 13:42:59

Biblioteca(s): | Embrapa Soja.
Data corrente: | 06/02/2014
Data da última atualização: | 21/05/2014
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, v. 44, n. 18, p. 2656-2665, 2013.
ISSN: | 1532-2416 online
DOI: | 10.1080/00103624.2013.813031
Idioma: | 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.
Thesaurus Nal: | rice.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (35054-1) - UPC - SP - PP - 12130 -  - 12130 - DIS