Specific and Intraspecific P Efficiency of Small-Grain Legumes as Affected by Long-Term P Management
Legumes have a high demand for phosphorus (P) but also have effective physiological and morphological strategies of P mobilisation. In order to evaluate the inter- and intraspecific P efficiency of small-grain legumes under contrasting long-term P management, eight accessions each of alfalfa (<i&...
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MDPI AG
2023-03-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/3/900 |
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| author | Yue Hu Klaus J. Dehmer Evelin Willner Bettina Eichler-Löbermann |
| author_facet | Yue Hu Klaus J. Dehmer Evelin Willner Bettina Eichler-Löbermann |
| author_sort | Yue Hu |
| collection | DOAJ |
| description | Legumes have a high demand for phosphorus (P) but also have effective physiological and morphological strategies of P mobilisation. In order to evaluate the inter- and intraspecific P efficiency of small-grain legumes under contrasting long-term P management, eight accessions each of alfalfa (<i>Medicago sativa</i> L.) and red clover (<i>Trifolium pratense</i> L.) were cultivated in two consecutive growing periods from 2020 to 2021 in a field trial established in 1998. Six treatments (no P, triple-superphosphate (TSP), biomass ash, cattle manure, biowaste compost, and biowaste compost + TSP) were considered as P sources. While the yield clearly varied between both growing seasons, the differences between alfalfa and red clover were relatively small (4.7 vs. 4.9 Mg ha<sup>−1</sup> in 2020 and 12.0 vs. 10.5 Mg ha<sup>−1</sup> in 2021, <i>p</i> < 0.05). Even after more than 20 years of P management, crop yields were hardly affected by mineral P sources (TSP and biomass ash) while organic fertilisers increased the yields and nutrient uptake of plants and also raised soil P pools and the activities of soil enzymes in comparison to the control. A relevant crop effect was only found for the nitrogen (N) leaching with higher mineral N contents in 60 to 90 cm soil depth measured for red clover compared to alfalfa (11.8 vs. 4.8 kg ha<sup>−1</sup>, <i>p</i> < 0.05). Our results emphasise the high P efficiency of small-grain legumes without pronounced inter- or intraspecific differences. The yield-enhancing effect of organic amendments was related to higher soil fertility rather than to P supply. |
| first_indexed | 2024-03-11T07:02:08Z |
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| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-11T07:02:08Z |
| publishDate | 2023-03-01 |
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| series | Agronomy |
| spelling | doaj.art-02ed973e3f424508b403c5efd756b9d82023-11-17T09:07:53ZengMDPI AGAgronomy2073-43952023-03-0113390010.3390/agronomy13030900Specific and Intraspecific P Efficiency of Small-Grain Legumes as Affected by Long-Term P ManagementYue Hu0Klaus J. Dehmer1Evelin Willner2Bettina Eichler-Löbermann3Satellite Collections North, Genebank, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), 23999 Malchow, GermanySatellite Collections North, Genebank, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), 23999 Malchow, GermanySatellite Collections North, Genebank, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), 23999 Malchow, GermanyAgronomy and Crop Science, University of Rostock, 18059 Rostock, GermanyLegumes have a high demand for phosphorus (P) but also have effective physiological and morphological strategies of P mobilisation. In order to evaluate the inter- and intraspecific P efficiency of small-grain legumes under contrasting long-term P management, eight accessions each of alfalfa (<i>Medicago sativa</i> L.) and red clover (<i>Trifolium pratense</i> L.) were cultivated in two consecutive growing periods from 2020 to 2021 in a field trial established in 1998. Six treatments (no P, triple-superphosphate (TSP), biomass ash, cattle manure, biowaste compost, and biowaste compost + TSP) were considered as P sources. While the yield clearly varied between both growing seasons, the differences between alfalfa and red clover were relatively small (4.7 vs. 4.9 Mg ha<sup>−1</sup> in 2020 and 12.0 vs. 10.5 Mg ha<sup>−1</sup> in 2021, <i>p</i> < 0.05). Even after more than 20 years of P management, crop yields were hardly affected by mineral P sources (TSP and biomass ash) while organic fertilisers increased the yields and nutrient uptake of plants and also raised soil P pools and the activities of soil enzymes in comparison to the control. A relevant crop effect was only found for the nitrogen (N) leaching with higher mineral N contents in 60 to 90 cm soil depth measured for red clover compared to alfalfa (11.8 vs. 4.8 kg ha<sup>−1</sup>, <i>p</i> < 0.05). Our results emphasise the high P efficiency of small-grain legumes without pronounced inter- or intraspecific differences. The yield-enhancing effect of organic amendments was related to higher soil fertility rather than to P supply.https://www.mdpi.com/2073-4395/13/3/900organic amendmentsalfalfared cloverphosphorus utilisation |
| spellingShingle | Yue Hu Klaus J. Dehmer Evelin Willner Bettina Eichler-Löbermann Specific and Intraspecific P Efficiency of Small-Grain Legumes as Affected by Long-Term P Management Agronomy organic amendments alfalfa red clover phosphorus utilisation |
| title | Specific and Intraspecific P Efficiency of Small-Grain Legumes as Affected by Long-Term P Management |
| title_full | Specific and Intraspecific P Efficiency of Small-Grain Legumes as Affected by Long-Term P Management |
| title_fullStr | Specific and Intraspecific P Efficiency of Small-Grain Legumes as Affected by Long-Term P Management |
| title_full_unstemmed | Specific and Intraspecific P Efficiency of Small-Grain Legumes as Affected by Long-Term P Management |
| title_short | Specific and Intraspecific P Efficiency of Small-Grain Legumes as Affected by Long-Term P Management |
| title_sort | specific and intraspecific p efficiency of small grain legumes as affected by long term p management |
| topic | organic amendments alfalfa red clover phosphorus utilisation |
| url | https://www.mdpi.com/2073-4395/13/3/900 |
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