Phosphorus and nitrogen cycles in the vegetation of differently managed buffer zones

Räty, Mari; Uusi-Kämppä, Jaana; Yli‐Halla, Markku; Rasa, Kimmo; Pietola, Liisa

doi:10.1007/s10705-009-9277-4

Cited by 41 publications

(31 citation statements)

References 25 publications

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“…Harvest of plants is recommended in buffer zones to reduce the risk of P leaching after frost (UusiKämpä 2005; Räty et al 2010). However, harvesting alone may not solve all the problems with the risk of P leaching, since plant roots remain after harvest.…”

Section: Phosphorus Release In Relation To Different Combinations Of mentioning

confidence: 99%

“…Phosphorus released from plant tissues is of especially high relevance in conditions with repeated freezing and thawing of plants and soil during winter. Losses of P from shoots after frost damage have been reported, for instance, for native prairie vegetation (White 1973), grassland (Uhlen 1989), alfalfa and grasses (Timmons et al 1970;Roberson et al 2007), vegetated buffer zones/strips consisting of grasses and other plant species (Räty et al 2010), and different species of catch/cover crops (Miller et al 1994;Bechmann et al 2005;Sturite et al 2007). However, most of these studies examined only aboveground parts of the plants and few studies have included plant roots damaged by frost (De Baets et al 2011;Kreyling et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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Potential phosphorus release from catch crop shoots and roots after freezing-thawing

et al. 2013

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Background and aims Catch crops used for mitigating nutrient losses to water can release phosphorus (P) when exposed to repeated freezing-thawing cycles (FTCs). This study sought to evaluate potential P losses from shoots and roots of eight catch crops. Methods Shoots and roots sampled from perennial ryegrass (Lolium perenne L.), cocksfoot (Dactylis glomerata L.), chicory (Cichorium intybus L.), phacelia (Phacelia tanacetifolia L.), red clover (Trifolium pratense L.), white mustard (Sinapis alba L.), oilseed radish (Raphanus sativus var. oleiformis L.) and white radish (R. sativus var. longipinnatus L.) were treated with no freezing, one single FTC, four continuous FTCs and four discontinuous FTCs. All samples were analysed for water-extractable P (WEP), and root samples also for characteristics such as specific root surface area (SSA). Results Freezing-thawing significantly increased potential P losses from both shoots and roots compared with no freezing. The two radish species and white mustard contained significantly higher concentrations of WEP than the other species, among which chicory and phacelia had the lowest WEP. On average, shoots had 43 % higher WEP than roots. Cumulative P release from shoots and roots was strongly correlated with their total-P content (p=0.006 and p=0.002, respectively). Cumulative release of P from taproots was correlated with SSA (p=0.03). Conclusions Chicory, and possibly phacelia, appear to be promising catch crops for P.

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Section: Phosphorus Release In Relation To Different Combinations Of mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Potential phosphorus release from catch crop shoots and roots after freezing-thawing

et al. 2013

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“…While some studies have shown a greater proportion of biomass TP released as WEP (e.g. Räty et al, 2010), the results from this study correspond directly to the work of others (e.g. Øgaard, 2015;Roberson et al, 2007).…”

Section: Greenhouse Experimentssupporting

confidence: 88%

“…When plants begin to decompose, they return P to the soil, and if not incorporated into the deeper soils, this P now contained within the soil can move into adjacent water bodies during major hydrologic events through dissolution or erosion (Räty, Uusi-Kämppä, Yli-Halla, Rasa, & Pietola, 2010).…”

Section: Plant Uptake Of Phosphorusmentioning

confidence: 99%

An assessment of vegetation characteristics and hydrologic flow pathways on the effectiveness of vegetated buffer strips for phosphorus reduction in an agricultural watershed

Kieta¹

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Vegetated buffer strips are a management practice implemented in agricultural landscapes because of their effectiveness in reducing the transport of phosphorus (P) to surface water.However, in northern climates, buffers can become a source of P when soils are frozen and vegetation is dead or dormant during the most significant runoff period. This research investigated buffer vegetation as a potential source of P at the Morden Research Station, Manitoba. Vegetation sampling in two new buffers and an established buffer in fall 2015 and spring 2016 showed biomass P loss of 32-47% and an increase in soil Olsen P of 25-43% over winter. Thus, it is likely that much of the leached P was retained in the soil. Laboratory experiments subjected timothy grass to zero, three or six freeze-thaw cycles (FTCs), followed by extraction to leach P. Results showed an increased number of FTCs resulted in increased concentrations of leached P.ii Contents

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“…Organic carbon content and soil moisture at the time of sampling were highest in the natural site due to permanent vegetation cover and abundant decaying plant material (Räty et al, 2010b). The total porosity and macro porosity were generally high in all studied sites.…”

Section: General Physical Propertiesmentioning

confidence: 86%

Structure and pore system in differently managed clayey surface soil as described by micromorphology and image analysis

et al. 2012

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Phosphorus and nitrogen cycles in the vegetation of differently managed buffer zones

Cited by 41 publications

References 25 publications

Potential phosphorus release from catch crop shoots and roots after freezing-thawing

Potential phosphorus release from catch crop shoots and roots after freezing-thawing

An assessment of vegetation characteristics and hydrologic flow pathways on the effectiveness of vegetated buffer strips for phosphorus reduction in an agricultural watershed

Structure and pore system in differently managed clayey surface soil as described by micromorphology and image analysis

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