Data/hora: 11/06/2024 11:01:22

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 16/09/2016
Data da última atualização: | 06/11/2019
Autoria: | FAGERIA, N. K.; BALIGAR, V. C.
Afiliação: | NAND KUMAR FAGERIA, CNPAF; V. C. BALIGAR, USDA.
Título: | Growth, yield and yield components of dry bean as influenced by phosphorus in a tropical acid soil.
Ano de publicação: | 2016
Fonte/Imprenta: | Journal of Plant Nutrition, New York, v. 39, n. 4, p. 562-568, Mar. 2016.
DOI: | 10.1080/01904167.2016.1143489
Idioma: | Inglês
Conteúdo: | Phosphorus (P) deficiency is one of the most yield limiting factors for dry bean (Phaseolus vulgaris) production in tropical acid soils. Dry beans are invariably grown as mono-crops or as inter-crops under the perennial tropical crops. Information is limited regarding the influence of phosphorus fertilization on dry bean yield and yield components and P use efficiency in tropical acid soils. A greenhouse experiment was conducted to evaluate the influence of phosphorus fertilization on dry bean growth, yield and yield components and P uptake parameters. Phosphorus rates used were 0, 50, 100, 150, 200, and 250mg P kg(-1) of soil. Soil used in the experiment was an acidic Inceptisol. Grain yield, shoot dry weight, number of pods, and 100 grain weight were significantly (P < 0.01) increased with phosphorus fertilization. Maximum grain yield, shoot dry matter, number of pods, and 100 grain weight were obtained with the application of 165, 216, 162, and 160mg P kg(-1) of soil, respectively, as calculated by regression equations. Grain yield was significantly and positively associated with shoot dry weight, number of pods, P concentration in grain and total uptake of P in shoot and grain. Phosphorus use efficiency defined in several ways, decreased with increasing P rates from 50 to 250mg P kg(-1) of soil. Maximum grain yield was obtained at 82mg kg(-1) of Mehlich 1 extractable soil P. Results suggest that dry bean yield in Brazilian Inceptisols could be significantly increased with the use of adequate rates of phosphorus fertilization.
Palavras-Chave: | Grain harvest index; P use efficiency.
Thesagro: | Feijão; Fósforo; Phaseolus vulgaris.
Thesaurus Nal: | Phosphorus.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (34475-1) - UPC - AP - DD - 2016 -  - 2016 - DIS