Data/hora: 01/06/2024 02:35:14

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 29/01/2014
Data da última atualização: | 26/05/2014
Autoria: | FAGERIA, N. K.; MELO, L. C.; FERREIRA, E. P. B.; OLIVEIRA, J. P.; KNUPP, A. M.
Afiliação: | NAND KUMAR FAGERIA, CNPAF; LEONARDO CUNHA MELO, CNPAF; ENDERSON PETRONIO DE BRITO FERREIRA, CNPAF; JAISON PEREIRA DE OLIVEIRA, CNPAF; ADRIANO MOREIRA KNUPP, CNPAF.
Título: | Dry matter, grain yield, and yield components of dry bean as influenced by nitrogen fertilization and rhizobia.
Ano de publicação: | 2014
Fonte/Imprenta: | Communications in Soil Science and Plant Analysis, New York, v. 45, n. 1, p. 111-125, 2014.
DOI: | 10.1080/00103624.2013.848877
Idioma: | Inglês
Conteúdo: | Dry bean is an important legume crop for a large portion of the world?s population. Nitrogen (N) is one of the most yield-limiting nutrients in all dry bean?producing regions of the world. A greenhouse experiment was conducted to evaluate responses of 15 dry bean genotypes to N fertilization with and without rhizobial inoculation grown on a lowland soil locally known as Varzea. Nitrogen treatments were (i) 0 mg N kg&#8722;1 (control or N0), (ii) 0 mg N kg&#8722;1 + inoculation with rhizobial strains (N1), (iii) inoculation with rhizobial strains + 50 mg N kg&#8722;1 (N2), and (vi) 200 mg N kg&#8722;1 (N3). Shoot dry weight, grain yield, yield components, maximum root length, and root dry weight were significantly affected by N fertilization, rhizobial inoculation, and genotype treatments. The N × genotypes interactions were significant for shoot dry weight, grain yield, number of pods per plant, number of grain per pod, 100-grain weight, grain harvest index (GHI), and maximum root length and root dry weight. These significant interactions indicate that genotypes performance varied with varying N rates and inoculation treatments. Maximum grain yield was produced at 200 mg N kg&#8722;1 treatment. Inoculation with rhizobial strains improved grain yield but did not reach the level of 200 mg N kg&#8722;1 applied with chemical fertilizer. Based on grain yield efficiency index, genotypes were classified as efficient, moderately efficient, and inefficient in N-use efficiency. Overall, the most efficient genotypes were BRS Pontal, Diamante Negro, BRS Grafite, BRS Requinte, and BRS 9435 Cometa, and inefficient genotypes were BRSMG Talisma and Aporé.
Palavras-Chave: | Grain harvest index; Grain yiel efficiency index; Produção de grão; Root dry weight; Root length.
Thesagro: | Feijão; Fertilizante nitrogenado; Phaseolus vulgaris; Raiz; Rhizobium.
Thesaurus Nal: | Beans; Nitrogen fertilizers.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (32430-1) - UPC - AP - DD - 2014.002 -  - 2014.002 - DIS