Author:
Ros Mart B. H.,Koopmans Gerwin F.,van Groenigen Kees Jan,Abalos Diego,Oenema Oene,Vos Hannah M. J.,van Groenigen Jan Willem
Abstract
AbstractBecause phosphorus (P) is one of the most limiting nutrients in agricultural systems, P fertilisation is essential to feed the world. However, declining P reserves demand far more effective use of this crucial resource. Here, we use meta-analysis to synthesize yield responses to P fertilisation in grasslands, the most common type of agricultural land, to identify under which conditions P fertilisation is most effective. Yield responses to P fertilisation were 40–100% higher in (a) tropical vs temperate regions; (b) grass/legume mixtures vs grass monocultures; and (c) soil pH of 5–6 vs other pHs. The agronomic efficiency of P fertilisation decreased for greater P application rates. Moreover, soils with low P availability reacted disproportionately strong to fertilisation. Hence, low fertiliser application rates to P-deficient soils result in stronger absolute yield benefits than high rates applied to soils with a higher P status. Overall, our results suggest that optimising P fertiliser use is key to sustainable intensification of agricultural systems.
Funder
Wageningen University Fund
Publisher
Springer Science and Business Media LLC
Reference46 articles.
1. Tilman, D., Balzer, C., Hill, J. & Befort, B. L. Global food demand and the sustainable intensification of agriculture. Proc. Natl. Acad. Sci. 108, 20260–20264 (2011).
2. Muller, A. et al. Strategies for feeding the world more sustainably with organic agriculture. Nat. Commun. 8, 1290 (2017).
3. Godfray, H. C. J. et al. Food security: The challenge of feeding 9 billion people. Science 327, 812–818 (2010).
4. Steinfeld, H. et al. Livestock’s Long Shadow—Environmental Issues and Options (FAO, Rome, 2006).
5. FAO. Statistical Database of the Food and Agriculture Organization of the United Nations (FAO, Rome, 2017).
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