Potassium fractions in soil and simple K balance in long-term fertilising experiments
Experiments were used to determine the potassium release from the non-exchangeable K (Kne) forms that are involved in plant nutrition and which replenish the pool of available K. Long-term stationary field experiments with different fertilisation systems (organic: farmyard manure, sewage sludge, str...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2020-12-01
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| Series: | Soil and Water Research |
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| Online Access: | https://swr.agriculturejournals.cz/artkey/swr-202004-0003_potassium-fractions-in-soil-and-simple-k-balance-in-long-term-fertilising-experiments.php |
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| author | Jiří Balík Martin Kulhánek Jindřich Černý Ondřej Sedlář Pavel Suran |
| author_facet | Jiří Balík Martin Kulhánek Jindřich Černý Ondřej Sedlář Pavel Suran |
| author_sort | Jiří Balík |
| collection | DOAJ |
| description | Experiments were used to determine the potassium release from the non-exchangeable K (Kne) forms that are involved in plant nutrition and which replenish the pool of available K. Long-term stationary field experiments with different fertilisation systems (organic: farmyard manure, sewage sludge, straw; mineral: NPK, N) were carried out to study the potassium balance and the K content changes in the topsoil (0-30 cm) and subsoil (30-60 cm). The trials were located at three sites with different soil-climatic conditions. The following crops were rotated within the trial: potatoes (maize) - winter wheat - spring barley. All three crops were grown each year over 21 years. Positive correlations between the contents of the available K in the topsoil and the potassium balance (K inputs - K outputs) were observed. There were no statistically significant differences among the treatments. Depending on the soil properties, the ratio of non-exchangeable K (Kne) was 12-37% of the values obtained via the aqua regia extraction. Depending on the site, the amount released from the Kne forms to the available K form was 46-69 kg K/ha/ year. The use of K from the farmyard manure varied from 7.4% up to 25%. Due to the low K content in the sewage sludge, the long-term fertilisation with sludge may only lead to the depletion of the available K in the soil, similar to the sole N mineral fertilisation. |
| first_indexed | 2024-04-10T08:04:09Z |
| format | Article |
| id | doaj.art-75e2905bcbbd4b5eb23dc8e6dbc8f970 |
| institution | Directory Open Access Journal |
| issn | 1801-5395 1805-9384 |
| language | English |
| last_indexed | 2024-04-10T08:04:09Z |
| publishDate | 2020-12-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Soil and Water Research |
| spelling | doaj.art-75e2905bcbbd4b5eb23dc8e6dbc8f9702023-02-23T03:48:44ZengCzech Academy of Agricultural SciencesSoil and Water Research1801-53951805-93842020-12-0115421121910.17221/151/2019-SWRswr-202004-0003Potassium fractions in soil and simple K balance in long-term fertilising experimentsJiří BalíkMartin Kulhánek0Jindřich Černý1Ondřej Sedlář2Pavel Suran3Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech RepublicDepartment of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech RepublicDepartment of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech RepublicDepartment of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech RepublicExperiments were used to determine the potassium release from the non-exchangeable K (Kne) forms that are involved in plant nutrition and which replenish the pool of available K. Long-term stationary field experiments with different fertilisation systems (organic: farmyard manure, sewage sludge, straw; mineral: NPK, N) were carried out to study the potassium balance and the K content changes in the topsoil (0-30 cm) and subsoil (30-60 cm). The trials were located at three sites with different soil-climatic conditions. The following crops were rotated within the trial: potatoes (maize) - winter wheat - spring barley. All three crops were grown each year over 21 years. Positive correlations between the contents of the available K in the topsoil and the potassium balance (K inputs - K outputs) were observed. There were no statistically significant differences among the treatments. Depending on the soil properties, the ratio of non-exchangeable K (Kne) was 12-37% of the values obtained via the aqua regia extraction. Depending on the site, the amount released from the Kne forms to the available K form was 46-69 kg K/ha/ year. The use of K from the farmyard manure varied from 7.4% up to 25%. Due to the low K content in the sewage sludge, the long-term fertilisation with sludge may only lead to the depletion of the available K in the soil, similar to the sole N mineral fertilisation.https://swr.agriculturejournals.cz/artkey/swr-202004-0003_potassium-fractions-in-soil-and-simple-k-balance-in-long-term-fertilising-experiments.phpexchangeable and non-exchangeable kfarmyard manuremineral fertilisationsewage sludgestraw |
| spellingShingle | Jiří Balík Martin Kulhánek Jindřich Černý Ondřej Sedlář Pavel Suran Potassium fractions in soil and simple K balance in long-term fertilising experiments Soil and Water Research exchangeable and non-exchangeable k farmyard manure mineral fertilisation sewage sludge straw |
| title | Potassium fractions in soil and simple K balance in long-term fertilising experiments |
| title_full | Potassium fractions in soil and simple K balance in long-term fertilising experiments |
| title_fullStr | Potassium fractions in soil and simple K balance in long-term fertilising experiments |
| title_full_unstemmed | Potassium fractions in soil and simple K balance in long-term fertilising experiments |
| title_short | Potassium fractions in soil and simple K balance in long-term fertilising experiments |
| title_sort | potassium fractions in soil and simple k balance in long term fertilising experiments |
| topic | exchangeable and non-exchangeable k farmyard manure mineral fertilisation sewage sludge straw |
| url | https://swr.agriculturejournals.cz/artkey/swr-202004-0003_potassium-fractions-in-soil-and-simple-k-balance-in-long-term-fertilising-experiments.php |
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