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| Titel: |
Effect of soil pH and N fertilization oh uptake and fractions of Ca and Mg in two barley cultivars |
| Auteur: |
Crooke, W. M. |
| Verschenen in: |
Communications in soil science and plant analysis |
| Paginering: | Jaargang 11 (1980) nr. 2 pagina's 209-221 |
| Jaar: |
1980 |
| Inhoud: |
A study has been made of the amounts of Ca and Mg removed from dry matter of young barley plants by sequential extraction with water, M NaCl, 0.4 M acetic acid and 0.6 M HCl. Two contrasting cultivars were examined and other factors included the effects of the soil pH in which the plants were grown and the form of N-fertilizer used. The distribution of total Ca and Mg and the different fractions between young and old tissues was also examined. Water and NaCl between them removed the bulk of the Ca and Mg (between 80 and 90%) and broadly, where uptake of total Ca or Mg increased with increase in soil pH, there was little change in the percentage of either cation appearing in the fractions, indicating a constant removal by the extractants, irrespective of content. Only about a third of the total Ca was found in the upper half of the plants, against over 60% in the case of Mg and the same distribution was found for the percentages of the water-soluble and the exchangeable fractions. Small differences between cultivars and between N forms in respect of fractions and their distribution in the plant were found, but these did not affect the overall general pattern. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 65 van 164 gevonden artikelen
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