Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Milho e Sorgo. |
Data corrente: |
06/01/2014 |
Data da última atualização: |
18/06/2025 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FAGERIA, N. K.; CARVALHO, M. C. S.; SANTOS, F. C. |
Afiliação: |
NAND KUMAR FAGERIA, CNPAF; MARIA DA CONCEICAO SANTANA CARVALHO, CNPAF; FLAVIA CRISTINA DOS SANTOS, CNPMS. |
Título: |
Root growth of upland rice genotypes as influenced by nitrogen fertilization. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Journal of Plant Nutrition, New York, v. 37, n. 1, p. 95-106, Jan. 2014. |
DOI: |
10.1080/01904167.2013.849731 |
Idioma: |
Inglês |
Conteúdo: |
The plant root system is an important organ which supplies water and nutrients to growing plants. Information is limited on influence of nitrogen fertilization on upland rice root growth. A greenhouse experiment was conducted to evaluate influence of nitrogen (N) fertilization on growth of root system of 20 upland rice genotypes. The N rate used was 0 mg kg?1 (low) and 300 mg kg?1(high) of soil. Nitrogen X genotype interactions for root length and root dry weight were highly significant (P<0.01), indicating that differences among genotypes were not consistent at two N rates. Overall, greater root length, root dry weight and tops-roots ration were obtained at an N fertilization rate of 300 mg kg?1 compared with the 0 mg N kg?1 soil. However, genotypes differ significantly in root length, root dry weight and top-root ratio. Nitrogen fertilization produced fine roots and more root hairs compared with absence of N fertilizer treatment. Based on root dry weight efficiency index (RDWEI) for N use efficiency, 70% genotypes were classified as efficient, 15% were classified as moderately efficient and 15% were classified as inefficient. Root dry weight efficiency index trait can be incorporated in upland rice for improving water and nutrient efficiency in favor of higher yields. |
Thesagro: |
Adubação; Arroz; Genótipo; Latossolo; Nitrogênio; Oryza sativa; Raiz; Solo. |
Thesaurus Nal: |
Genotype; Nitrogen fertilizers; Oxisols; Rice; Roots. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02133naa a2200313 a 4500 001 1977741 005 2025-06-18 008 2014 bl uuuu u00u1 u #d 024 7 $a10.1080/01904167.2013.849731$2DOI 100 1 $aFAGERIA, N. K. 245 $aRoot growth of upland rice genotypes as influenced by nitrogen fertilization.$h[electronic resource] 260 $c2014 520 $aThe plant root system is an important organ which supplies water and nutrients to growing plants. Information is limited on influence of nitrogen fertilization on upland rice root growth. A greenhouse experiment was conducted to evaluate influence of nitrogen (N) fertilization on growth of root system of 20 upland rice genotypes. The N rate used was 0 mg kg?1 (low) and 300 mg kg?1(high) of soil. Nitrogen X genotype interactions for root length and root dry weight were highly significant (P<0.01), indicating that differences among genotypes were not consistent at two N rates. Overall, greater root length, root dry weight and tops-roots ration were obtained at an N fertilization rate of 300 mg kg?1 compared with the 0 mg N kg?1 soil. However, genotypes differ significantly in root length, root dry weight and top-root ratio. Nitrogen fertilization produced fine roots and more root hairs compared with absence of N fertilizer treatment. Based on root dry weight efficiency index (RDWEI) for N use efficiency, 70% genotypes were classified as efficient, 15% were classified as moderately efficient and 15% were classified as inefficient. Root dry weight efficiency index trait can be incorporated in upland rice for improving water and nutrient efficiency in favor of higher yields. 650 $aGenotype 650 $aNitrogen fertilizers 650 $aOxisols 650 $aRice 650 $aRoots 650 $aAdubação 650 $aArroz 650 $aGenótipo 650 $aLatossolo 650 $aNitrogênio 650 $aOryza sativa 650 $aRaiz 650 $aSolo 700 1 $aCARVALHO, M. C. S. 700 1 $aSANTOS, F. C. 773 $tJournal of Plant Nutrition, New York$gv. 37, n. 1, p. 95-106, Jan. 2014.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |