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Details van artikel 5 van 8 gevonden artikelen
| Titel: |
Effects of moist storage and different drying temperatures on the extractability of iron, copper, manganese, and zinc in soil samples |
| Auteur: |
Tome, J. B. Dechen, A. R. Atkinson, R. J. |
| Verschenen in: |
Communications in soil science and plant analysis |
| Paginering: | Jaargang 27 (1996) nr. 11-12 pagina's 2591-2611 |
| Jaar: |
1996-06 |
| Inhoud: |
The objective of this study was to investigate the effect of different pretreatments on the extraction of cationic micronutrients [iron (Fe), copper (Cu), manganese (Mn), and zinc (Zn)] from four different soils. Samples were either stored in the field-moist state for seven days before drying or dried immediately. Three drying treatments were used: air-dried (72 hours), oven-dried at 40°C (48 hours), or oven-dried at 105°C (24 hours). Micronutrients were then extracted with 0.1N HC1 or diethenetriamine-pentacetic acid (DTPA). Storage, drying temperature, extractant, and soil type all influenced micronutrient extractability. In general, a higher temperature increased the level of micronutrient extracted. However, the reverse effect was also observed. The effect of storage was variable and probably depended on the sample moisture content. We conclude that the results from routine analysis and experimentally determined indices can only be compared if soil samples are subjected to the same pretreatments. Hence, rigorous standardization of the sample preparations is imperative for accurate determination of plant-available micronutrients. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 5 van 8 gevonden artikelen
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