Mean nutrient uptake depths of cereal crops change with compost incorporation into subsoil – evidence from 87Sr/86Sr ratios

    Background and Aims Root restricting layers often hinder crops from accessing the large reservoir of bioavailable mineral nutrients situated in subsoil. This study aims to explore changes in the mean nutrient uptake depth of cereal crops when removing root restricting layers through subsoil mana...

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Bibliographic Details
Published in:Plant and soil 2023-08, Vol.489 (1-2), p.613-628
Main Authors: Uhlig, David, Berns, Anne E., Wu, Bei, Amelung, Wulf
Format: Article
Language:English
Subjects:
Agriculture
Bioavailability
Biomass
Biomedical and Life Sciences
Cereal crops
Composting
Composts
Crops
Ecology
Life Sciences
Loosening
Management
Nutrient concentrations
Nutrient uptake
Nutrients
Plant Physiology
Plant Sciences
Relocation
Research Article
Reservoirs
Shoots
Soil Science & Conservation
Soils
Strontium 87
Subsoils
Sustainable use
Topsoil
Uplift
Water depth
Water use
Water use efficiency
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Summary:    Background and Aims Root restricting layers often hinder crops from accessing the large reservoir of bioavailable mineral nutrients situated in subsoil. This study aims to explore changes in the mean nutrient uptake depth of cereal crops when removing root restricting layers through subsoil management. Methods Subsoil management was performed by deep loosening, cultivation of lucerne as deep-rooting pre-crop, and their combination with compost incorporation. Management effects were evaluated by means of shoot biomass and element concentrations in shoots and soil compartments. The mean nutrient uptake depth was fingerprinted by graphically matching the 87 Sr/ 86 Sr ratios in shoots with the 87 Sr/ 86 Sr ratios in the exchangeable fraction in soil. Nutrient uplift from depth to topsoil was inferred from element concentrations in the exchangeable fraction in soil. Results Shoot biomass remained constant in management and control plots. The mean nutrient uptake depth changed with subsoil management in the order: deep loosening 
ISSN:0032-079X
1573-5036
DOI:10.1007/s11104-023-06047-x