Data/hora: 15/05/2024 01:13:14

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 24/08/1995
Data da última atualização: | 24/08/1995
Autoria: | SINGH, T.; PASRICHA, N. S.
Título: | Ionic equilibria in submerged Paddy soils - The iron hydroxide systems.
Ano de publicação: | 1978
Fonte/Imprenta: | Journal of the Indian Society of Soil Science, v.26, n.2, p.139-144, 1978.
Idioma: | Inglês

Conteúdo:

To obtain a preliminary knowledge of the dominant solid phase of iron controlling its avai-
lability in submerged soils, Habbelkher loam, Saleempur sandy and Heir loa'n were kept
subermeged in earthen pots in the greenhouse. The soil solutions were drawn anaerobi-
cally by gravity and analysed fortnightly for pE, pH and major cations. In spite variations in pH, pE and the concentration of Fe2+ in the soil solutions, the values of the expressions,
pE-pFe2+ + 3pH, pE-1.5 pFe2+ + 4 pH and pE + pH were constant and close to the theo-
retical values of 17.87, 23.27 and 3 3, respectively, indicatingaa that Fe (OH)3 - Fe2+ and
Fe3 (OH)8 - Fe(OH)2 systems controlled the solubility of Fe2+.

Palavras-Chave: | Condicao submergida; Disponibilidade de ferro; Equilibrio ionico; Fe availability; Fertility; Ionic equilibrium; Solid phase iron; Submerged condition.
Thesagro: | Fertilidade; Solo.
Thesaurus Nal: | soil.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (29382-1) - ADD - SP - -- - SP1002 -  - 1002 - DIS