Data/hora: 23/06/2024 19:50:45

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 12/07/1996
Data da última atualização: | 12/07/1996
Autoria: | BROWN, J. C.; LUNT, O. R.; HOLMES, R. S.; TIFFIN, L. O.
Afiliação: | United States Department of Agriculture.
Título: | The bicarbonate ion as an indirect cause of iron chlorosis.
Ano de publicação: | 1959
Fonte/Imprenta: | Soil Science, v.88, p.260-266, 1959.
Idioma: | Inglês
Conteúdo: | In a split-medium experiment, in which the roots of chIorosis-susceptibIe PI soybeans were permitted to grow through a soil mix and an air gap into a soIution cuIture containing no Fe or P, the addition of 10 me./I. of NaHCO3 to the soIution cuIture did not induce chlorosis or reduce the absorption of iron from the soil mixture. The respiration of roots from these treatments was, likewise, not reduced. In contrast, the PI soybeans grown in a complete soIution cuIture containing 5 me./I. NaHCO3 deveIoped severe chIorosis, and root respiration decreased as chIorosis deveIoped. Bicarbonate treatments maintained approximateIy twice as much phosphorus in soIution as comparabIe treatments containing no HCO3-. The incidence of iron chIorosis in PI soybeans was reIated more to the phosphorus concentration than to the HCO3- concentration in soIution cuIture. The affect of HCO3- on the development of iron chIorosis is believed to be indirect rather than direct.
Palavras-Chave: | Bicarbonate ion; Growth; Iron chlorosis; Soybena.
Thesagro: | Bicarbonato; Crescimento; Ferro; Soja.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (32712-1) - ADC - SP - -- - SP3081 -  - 3081 - DIS