Site characteristics determine the duration of structure liming effects on clay soil

نویسندگان

چکیده

Adding carbonated or non-carbonated lime to clay soils can lead changes in aggregate stability. In Sweden, ‘structure liming’ with a mixed product (normally 80–85% calcium carbonate and 15–20% hydroxide) is subsidised through environmental schemes increase stability, thereby mitigating losses of particulate phosphorus (PP). This study assessed the effects structure liming on stability eight southern using turbidity as proxy for Turbidity leachate from simulated rain events performed aggregates (2–5 mm) laboratory was measured one six years after application four treatments 0, 4, 8 16 t ha-1 product. The effect analysed all rates, but also contrast between unlimed control mean limed treatments, identify general effect. A significant found year. decreased over time, still detectable years. However, there interaction trial treatment, indicating different reactions suggesting that not are suitable if desired objective lower risk PP losses. Clay content, initial pH mineralogy may explain responses liming. These findings show need site-specific strategy. As tentative recommendation, minimum content approximately 25–30% <7 should be preferred

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ژورنال

عنوان ژورنال: Agricultural and Food Science

سال: 2022

ISSN: ['1459-6067', '1795-1895']

DOI: https://doi.org/10.23986/afsci.115313