An indoor freeze/thaw lysimeter study of phosphorus leaching from soils with four catch crops
Catch crops have been found to decrease leaching of nitrates into surface and ground waters, but they also have the potential to increase phosphorus (P) loadings to natural waters as well, due to plant cell destruction caused during natural freezing and thawing events. An indoor lysimeter experiment...
| Autor principal: | |
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| Formato: | Second cycle, A2E |
| Lenguaje: | sueco Inglés |
| Publicado: |
2011
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| Materias: | |
| Acceso en línea: | https://stud.epsilon.slu.se/2763/ |
| _version_ | 1855570478171684864 |
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| author | Riddle, Matthew |
| author_browse | Riddle, Matthew |
| author_facet | Riddle, Matthew |
| author_sort | Riddle, Matthew |
| collection | Epsilon Archive for Student Projects |
| description | Catch crops have been found to decrease leaching of nitrates into surface and ground
waters, but they also have the potential to increase phosphorus (P) loadings to natural
waters as well, due to plant cell destruction caused during natural freezing and thawing
events. An indoor lysimeter experiment was carried out using a clay and a sand soil with the
application of four different plant species: perennial ryegrass cultivar ‘Helmer’ (Lolium
perenne L.), honey herb, cultivar ‘Stala’ (Phacelia tanacetifolia L.), chicory, cultivar ‘Puna’
(Cichoium intybis L.), and oilseed radish, cultivar ‘Adios’ (Raphanus sativus L.). These plants
were exposed to four simulated rainfall and three freezing events in two separate
experiments, one using topsoil monoliths with applied plant material and one with plant
material only. Sand and clay soils had significantly different leaching loads after 1 and 2
freezing events with total P contents in leachate equivalent to 0.71 kg ha‐1 for clay and 0.20
kg ha‐1 (P=0.0018) for sand soil, and after the second event 0.54 kg ha‐1 for clay and 0.30 kg
ha‐1 for sand (P=0.0026). The combined total P leaching loads from the clay soil were
significant for many of the plants and were in the order of chicory (2.6 kg ha‐1) > ryegrass
(2.3 kg ha‐1) > oilseed radish (2.2 kg ha‐1) > honey herb (1.3kgha‐1), taken from the plant and
soil experiment. Losses were of a magnitude greater from the plant only experiment with
chicory (51.7 kg ha‐1) > oilseed radish (43.2kgha‐1) > honey herb (18.4 kg ha‐1) > ryegrass (10
kg ha‐1). A total P analysis of plant tissue from before the first lysimeter experiment and after
the second plant only experiment showed that chicory lost 84%, oilseed radish 76%,
ryegrass 74% and honey herb 39% of total initial biomass P. The results indicate that soil
texture and plant choice can have a large impact on leaching loads that could potentially
enter natural waters. |
| format | Second cycle, A2E |
| id | RepoSLU2763 |
| institution | Swedish University of Agricultural Sciences |
| language | swe Inglés |
| publishDate | 2011 |
| publishDateSort | 2011 |
| record_format | eprints |
| spelling | RepoSLU27632012-04-20T14:20:11Z https://stud.epsilon.slu.se/2763/ An indoor freeze/thaw lysimeter study of phosphorus leaching from soils with four catch crops Riddle, Matthew Soil science and management Catch crops have been found to decrease leaching of nitrates into surface and ground waters, but they also have the potential to increase phosphorus (P) loadings to natural waters as well, due to plant cell destruction caused during natural freezing and thawing events. An indoor lysimeter experiment was carried out using a clay and a sand soil with the application of four different plant species: perennial ryegrass cultivar ‘Helmer’ (Lolium perenne L.), honey herb, cultivar ‘Stala’ (Phacelia tanacetifolia L.), chicory, cultivar ‘Puna’ (Cichoium intybis L.), and oilseed radish, cultivar ‘Adios’ (Raphanus sativus L.). These plants were exposed to four simulated rainfall and three freezing events in two separate experiments, one using topsoil monoliths with applied plant material and one with plant material only. Sand and clay soils had significantly different leaching loads after 1 and 2 freezing events with total P contents in leachate equivalent to 0.71 kg ha‐1 for clay and 0.20 kg ha‐1 (P=0.0018) for sand soil, and after the second event 0.54 kg ha‐1 for clay and 0.30 kg ha‐1 for sand (P=0.0026). The combined total P leaching loads from the clay soil were significant for many of the plants and were in the order of chicory (2.6 kg ha‐1) > ryegrass (2.3 kg ha‐1) > oilseed radish (2.2 kg ha‐1) > honey herb (1.3kgha‐1), taken from the plant and soil experiment. Losses were of a magnitude greater from the plant only experiment with chicory (51.7 kg ha‐1) > oilseed radish (43.2kgha‐1) > honey herb (18.4 kg ha‐1) > ryegrass (10 kg ha‐1). A total P analysis of plant tissue from before the first lysimeter experiment and after the second plant only experiment showed that chicory lost 84%, oilseed radish 76%, ryegrass 74% and honey herb 39% of total initial biomass P. The results indicate that soil texture and plant choice can have a large impact on leaching loads that could potentially enter natural waters. 2011-06-07 Second cycle, A2E NonPeerReviewed application/pdf swe https://stud.epsilon.slu.se/2763/1/riddle_m_110607.pdf Riddle, Matthew, 2011. An indoor freeze/thaw lysimeter study of phosphorus leaching from soils with four catch crops. Second cycle, A2E. Uppsala: (NL, NJ) > Dept. of Soil and Environment <https://stud.epsilon.slu.se/view/divisions/OID-435.html> urn:nbn:se:slu:epsilon-s-276 eng |
| spellingShingle | Soil science and management Riddle, Matthew An indoor freeze/thaw lysimeter study of phosphorus leaching from soils with four catch crops |
| title | An indoor freeze/thaw lysimeter study of phosphorus leaching from soils with four catch crops |
| title_full | An indoor freeze/thaw lysimeter study of phosphorus leaching from soils with four catch crops |
| title_fullStr | An indoor freeze/thaw lysimeter study of phosphorus leaching from soils with four catch crops |
| title_full_unstemmed | An indoor freeze/thaw lysimeter study of phosphorus leaching from soils with four catch crops |
| title_short | An indoor freeze/thaw lysimeter study of phosphorus leaching from soils with four catch crops |
| title_sort | indoor freeze/thaw lysimeter study of phosphorus leaching from soils with four catch crops |
| topic | Soil science and management |
| url | https://stud.epsilon.slu.se/2763/ https://stud.epsilon.slu.se/2763/ |