Phosphorus Cycles of Forest and Upland Grassland Ecosystems and Some Effects of Land Management Practices

Harrison, A. F.

doi:10.1002/9780470720387.ch10

Cited by 16 publications

(3 citation statements)

References 22 publications

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“…A companion study to this one in the same agricultural fields found a similar lack of correlation between biological activities and instantaneous measures of soil P (Maran, Weintraub, & Pelini, 2020). This result differs from natural systems (Achat et al, 2016;Harrison, 2008) and some agricultural systems (Bender & van der Heijden, 2015;Hedley et al, 1982;Oehl et al, 2001) where P accessibility is correlated with organic matter concentration and the potential for soil organisms to mineralize P. However, the influence of soil biota on P solubility in agricultural systems varies (Khan, Zaidi, & Wani, 2007) and increases with increasing soil organic matter and organic amendment application rate (Hussain, Asghar, Akhtar, & Arshad, 2013;Oehl et al, 2004). In addition, the composition of soil communities and the particular species stimulated likely influences the rate and form of P mobilization (Hussain et al, 2013;Khan et al, 2007).…”

Section: Phosphorus Pool Response To Treatment and Correlation With Biological Activitiesmentioning

confidence: 67%

Can we reduce phosphorus runoff from agricultural fields by stimulating soil biota?

2020

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When fertilizer phosphorus (P) is applied to soils, the P can run off fields and cause harmful algal blooms. Due to its chemistry, much of the added P that does not run off can bind to soil particles and become inaccessible to plants. In natural systems, microbial and faunal decomposers can increase soil P accessibility to plants. We tested the hypothesis that this may also be true in agricultural systems, which could increase P application efficiency and reduce runoff potential.We stimulated soil fauna with sodium (Na + ) and microbes with carbon (C) by adding corn (Zea mays L.) stover and Na + solution to plots in conventionally managed corn fields in northwestern Ohio. Stover addition increased microbial biomass by 65 ± 12% and respiration by 400-700%. Application of stover with Na + increased soil detritivore fauna abundance by 51 ± 20% and likely did not affect the other invertebrate guilds. However, soil biological activity was low compared with natural systems in all treatments and was not correlated with instantaneous measures of P accessibility, though cumulative P accessibility over the course of the growing season was correlated with microbial phosphatase activity (slope = 1.01, p < .01) and respiration (slope = 0.42, p = .02). Therefore, in agricultural systems, treatments to stimulate decomposers already in those systems may be ineffective at increasing soil P accessibility in the short term, but in the long term, higher microbial activities can be associated with higher soil P accessibility.

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Section: Phosphorus Pool Response To Treatment and Correlation With Biological Activitiesmentioning

confidence: 67%

Can we reduce phosphorus runoff from agricultural fields by stimulating soil biota?

2020

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“…1976: Development of a conceptual model of phosphorus transformations during pedogenesis (Walker & Syers, 1976). 1977, 1978: Explicit recognition by model development and testing of the importance of organic phosphorus turnover in ecosystem nutrition (Cole et al, 1977;Harrison, 1978). 1980: First use of solution 31 P NMR spectroscopy to characterize soil organic phosphorus (Newman & Tate, 1980).…”

Section: Some Collective Reflectionsmentioning

confidence: 99%

“…Three key factors that arose from this experience, which had a big influence on my future research approach, were: (i) working with a multidisciplinary scientific team, (ii) research of a whole ecosystem and its function and (iii) the global dimension of the overall programme. The first two factors gave rise to papers on phosphorus cycling in a whole woodland ecosystem (Harrison, 1978) and four different ecosystems (Harrison, 1985).…”

Section: Coming Back Looking Forward (A F Harrison)mentioning

confidence: 99%

On the history and future of soil organic phosphorus research: a critique across three generations

Haygarth

Harrison

Turner

2018

European J Soil Science

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Summary Soil organic phosphorus has broad agronomic and ecological significance, but remains a neglected topic of research. This opinion paper reflects a collaborative discussion between three generations of scientists who have collectively studied soil organic phosphorus for almost 50 years. We discuss personal reflections on our involvement in the field, opinions about progress and promising opportunities for future research. We debate an apparent overemphasis on analytical methodology at the expense of broader questions, and whether this has stifled progress in recent decades. We reiterate the urgent need to understand organic phosphorus cycling in the environment to address fundamental questions about phosphate supply, crop nutrition, water quality and ecosystem ecology. We also contend that we must encourage and integrate the study of organic phosphorus across all scales, from molecular chemistry to global cycling. Our discussion among three generations of researchers shows the value of a long‐term perspective, emphasizes the changing nature of this field of research, and reinforces the importance of continuing to be curious about the dynamics of organic phosphorus in the environment. Highlights Critical evaluation of the current state of soil organic phosphorus research Collective views of three researchers whose careers span 50 years Research is driven by analytical development, but will benefit from broader conceptual approaches We emphasize the value of long‐term and broad‐scale perspectives on this important research topic

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The Phosphorus Cycle

Emsley¹

1980

The Natural Environment and the Biogeochemical Cycles

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Phosphorus Cycles of Forest and Upland Grassland Ecosystems and Some Effects of Land Management Practices

Cited by 16 publications

References 22 publications

Can we reduce phosphorus runoff from agricultural fields by stimulating soil biota?

Can we reduce phosphorus runoff from agricultural fields by stimulating soil biota?

On the history and future of soil organic phosphorus research: a critique across three generations

The Phosphorus Cycle

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