Data/hora: 01/06/2024 16:33:40

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 09/03/1999
Data da última atualização: | 09/03/1999
Autoria: | ZHOU, H. J.; KORCAK, R. F.; FAN, F.; FAUST, M.
Afiliação: | Fruit Laboratory. Agricultural Research Center. U.S. Department of Agriculture, Beltsville.
Título: | The effect of bicarbonate induced Fe chlorosis on mineral content and Ca45 uptake of apple seedlings.
Ano de publicação: | 1984
Fonte/Imprenta: | Journal of Plant Nutrition, v.7, n.9, p.1355-1364, 1984.
Idioma: | Inglês
Conteúdo: | Apple seedlings (Malus domestica) cv 'York Imperial' were used as test seedlings in solution culture experiments on the effect of added bicarbonate (HCO3 at 61 or 122 ppm) over two K levels (78 or 156 ppm K). Added HCO3 not only induced Fe chlorosis but also reduced plant growth. Inclusion of higher K in the nutrient solution containing HCO3 tended to alleviate both the growth and reductions in leaf Fe concentration. Analysis of upper leaves generally showed increased levels of P, K, Ca, Mg and B compared to control seedlings while Fe was significantly reduced. These trends were modified slightly depending upon the specific HCO3 or K level. Root nutrient levels generally followed patterns similar to leaves. A current study using similar treatments was conducted with the seedlings exposed to 45Ca. After an eight day exposure period HCO3 at either level (61 or 122 ppm), with or without higher solution K, significantly decreased the amount of 45Ca in upper leaves.
Palavras-Chave: | Apple seedlings; Biacarbonato; Bicarbonate; Plant.
Thesagro: | Clorose; Maçã; Malus Domestica; Planta.
Thesaurus Nal: | chlorosis.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (37102-1) - ADD - SP - -- - SP3858 -  - 3858 - DIS