Data/hora: 07/06/2024 12:40:33

Biblioteca(s): | Embrapa Agrobiologia.
Data corrente: | 24/07/1997
Data da última atualização: | 16/04/2007
Autoria: | MULLER, S. H.
Título: | Rhizobium-symbiose under ertragsbildung bei Phaseolus vulgaris L. unter dem Einfluss von stickstoffgaben zu verschiedenen waschstumsstadien.
Ano de publicação: | 1984
Fonte/Imprenta: | 1984. 139 p. Tese (Doutorado) - Universitat Hohenhein, Hohenhein.
Páginas: | 139 p.
Idioma: | Alemão
Notas: | Orientada por: P. Martin
Conteúdo: | The N2-fixing grain legume Phaseolus vulgaris L. is grown in South America as a source of protein for human nutrition. If nitrogen availability of the soil is low, symbiotic N2 fixation as a main source of plant nitrogen nutrition often does not support high grain yields. Thereforr, in some cases, mineral nitrogen is supplied to the crop, which affects the symbiosis of Rhizobium and Phaseolus vulgaris for N2 fixation. Nitrogen fertilizer may have a positive influence on plant growth, which in return may stimulate N2 fixation, but high amounts of mineral nitrogen reduce symbiotic N2 fixation. The time of nitrogen application modifies the effect of mineral nitrogen on the symbiosis. Therefore experiments were conducted to compare the effect of mineral nitrogen at sowing on growth, yield, nodulation and N2 fixation of Phaseolus vulgaris to the effect of mineral nitrogen at a stage during the vegetative development of the legume. Two experimemts in the greenhouse and in the field, were set up, using Phaseolus vulgaris cv. Puebla 152, an indeterminate, semi-climbing cultivar, cv. Negro Argel, an indeterminate bush type, the non-nodulating cv. NORH 14 and cv. NORH 46 , as well as the non-nodulating Glycine max cv. Harosoy. N2 fixation was determined by the 15N dilution method combined with the single treatment method. The methods required that the amount of 30 mg N Kg-1 soil applied in the greenhouse experiment, or 60 Kg N ha-1, applied in the field experiment, was splitted into two unequal portions. The main ...........
Palavras-Chave: | FBN; Fixacao biologica de nitrogenio; Grain; Methods; N; NBF; Nitrogen fixing bacteria; Plants; Root nodulation.
Thesagro: | Feijão; Grão; Leguminosa; Método; Nitrogênio; Nodulação; Planta; Solo.
Thesaurus Nal: | kidney beans; legumes; nitrogen; soil.
Categoria do assunto: | --
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (25384-1) - ADD - TS - -- - 553.93 - M947r - 1995.00007 - DIS