Data/hora: 17/06/2024 04:17:26

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