Phosphorus in Action pp 431-458 | Cite as
Management Impacts on Biological Phosphorus Cycling in Cropped Soils
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Abstract
Phosphorus (P) is a limited resource and P deficiency limits crop production on large areas worldwide. Future food security, therefore, will largely depend on efficient P use in cropping systems. In this review, we present the impact of farmers’ interventions on biological P cycling in cropped soils of temperate and tropical regions, with emphasis on microbial functions in soil P dynamics. We exemplify the effects of (1) soil tillage, with a focus on the comparison of conventional tillage versus direct seeding systems; (2) fertilizer input, using organic and/or mineral nutrient sources; and (3) integration of legumes into cropping systems. We analyze whether and how biological processes can be influenced to increase the use efficiency of soil and fertilizer P. Finally, we formulate recommendations for an integrated P management. Future research should target improved biological access to recalcitrant inorganic and organic P forms.
Keywords
Microbial Biomass Arbuscular Mycorrhizal Fungus Mineral Fertilizer Soil Microbial Biomass Conventional TillageNotes
Acknowledgments
We gratefully acknowledge Jan Jansa (ETH Zurich) and two reviewers for their helpful comments on our chapter.
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