Comparison of granulated and loose ash in fertilisation of Scots pine on peatland
The effects of wood ash fertilisation on tree nutrition and growth on forested peatlands has been studied using loose ash, but in practice, ash fertilisation is done almost exclusively with granulated ash. In this study, the effects of granulated ash and loose ash (both 5 Mg ha–1) on the growth and...
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| Format: | Article |
| Language: | English |
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Finnish Society of Forest Science
2020-03-01
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| Series: | Silva Fennica |
| Subjects: |
| _version_ | 1818503645866491904 |
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| author | Jyrki Hytönen Hannu Hökkä |
| author_facet | Jyrki Hytönen Hannu Hökkä |
| author_sort | Jyrki Hytönen |
| collection | DOAJ |
| description | The effects of wood ash fertilisation on tree nutrition and growth on forested peatlands has been studied using loose ash, but in practice, ash fertilisation is done almost exclusively with granulated ash. In this study, the effects of granulated ash and loose ash (both 5 Mg ha–1) on the growth and nutrition of Scots pine (Pinus sylvestris L.) stands were compared between a nitrogen-poor and a nitrogen-rich site over 15 years. On the nitrogen-rich site, wood ash application was also compared with commercial PK fertilisation. On the nitrogen-rich site, mean stand volume growth increase over unfertilised control treatment during the 15 year study period using granulated ash and commercial PK fertiliser was of the same magnitude (on average, 2.2–2.3 m3 ha–1 a–1). However, when loose ash was used growth increase over control was higher (3.7 m3 ha–1 a–1). On the nitrogen-poor site, the mean growth increase gained by loose or granulated ash (1.4–1.5 m3 ha–1 a–1) over the unfertilised control treatment was not significant. Fertilisation with loose ash or PK increased foliar P, K and B concentrations already in the first or second growing season, following fertilisation on both sites. Granulated ash increased foliar P concentrations on the nitrogen-rich site less than loose ash. After an initial increase, foliar P, K and B concentrations decreased at the end of study period. On the nitrogen-poor site, foliar P concentrations were below the deficiency limit by the end of the study period. |
| first_indexed | 2024-12-10T21:26:47Z |
| format | Article |
| id | doaj.art-8b7f1db478d6430e8e666f53b76cc993 |
| institution | Directory Open Access Journal |
| issn | 2242-4075 2242-4075 |
| language | English |
| last_indexed | 2024-12-10T21:26:47Z |
| publishDate | 2020-03-01 |
| publisher | Finnish Society of Forest Science |
| record_format | Article |
| series | Silva Fennica |
| spelling | doaj.art-8b7f1db478d6430e8e666f53b76cc9932022-12-22T01:32:58ZengFinnish Society of Forest ScienceSilva Fennica2242-40752242-40752020-03-0154210.14214/sf.10259Comparison of granulated and loose ash in fertilisation of Scots pine on peatlandJyrki Hytönen0https://orcid.org/0000-0001-8475-3568Hannu Hökkä1Natural Resources Institute Finland, Natural Resources, Teknologiakatu 7, FI-67100 Kokkola, FinlandNatural Resources Institute Finland, Natural Resources, Paavo Havaksentie 3, FI-90570 Oulu, FinlandThe effects of wood ash fertilisation on tree nutrition and growth on forested peatlands has been studied using loose ash, but in practice, ash fertilisation is done almost exclusively with granulated ash. In this study, the effects of granulated ash and loose ash (both 5 Mg ha–1) on the growth and nutrition of Scots pine (Pinus sylvestris L.) stands were compared between a nitrogen-poor and a nitrogen-rich site over 15 years. On the nitrogen-rich site, wood ash application was also compared with commercial PK fertilisation. On the nitrogen-rich site, mean stand volume growth increase over unfertilised control treatment during the 15 year study period using granulated ash and commercial PK fertiliser was of the same magnitude (on average, 2.2–2.3 m3 ha–1 a–1). However, when loose ash was used growth increase over control was higher (3.7 m3 ha–1 a–1). On the nitrogen-poor site, the mean growth increase gained by loose or granulated ash (1.4–1.5 m3 ha–1 a–1) over the unfertilised control treatment was not significant. Fertilisation with loose ash or PK increased foliar P, K and B concentrations already in the first or second growing season, following fertilisation on both sites. Granulated ash increased foliar P concentrations on the nitrogen-rich site less than loose ash. After an initial increase, foliar P, K and B concentrations decreased at the end of study period. On the nitrogen-poor site, foliar P concentrations were below the deficiency limit by the end of the study period.pinus sylvestrisfertilisationgranulationnutritionpk fertiliserwood ash |
| spellingShingle | Jyrki Hytönen Hannu Hökkä Comparison of granulated and loose ash in fertilisation of Scots pine on peatland Silva Fennica pinus sylvestris fertilisation granulation nutrition pk fertiliser wood ash |
| title | Comparison of granulated and loose ash in fertilisation of Scots pine on peatland |
| title_full | Comparison of granulated and loose ash in fertilisation of Scots pine on peatland |
| title_fullStr | Comparison of granulated and loose ash in fertilisation of Scots pine on peatland |
| title_full_unstemmed | Comparison of granulated and loose ash in fertilisation of Scots pine on peatland |
| title_short | Comparison of granulated and loose ash in fertilisation of Scots pine on peatland |
| title_sort | comparison of granulated and loose ash in fertilisation of scots pine on peatland |
| topic | pinus sylvestris fertilisation granulation nutrition pk fertiliser wood ash |
| work_keys_str_mv | AT jyrkihytonen comparisonofgranulatedandlooseashinfertilisationofscotspineonpeatland AT hannuhokka comparisonofgranulatedandlooseashinfertilisationofscotspineonpeatland |