Artikkelin koko teksti on saatavilla vain PDF-formaatissa.

Heli Rautjärvi (email), Seppo Kaunisto, Timo Tolonen

Jatkolannoitusten vaikutus männyn (Pinus sylvestris L.) tilavuuskasvuun ja neulasten ravinnepitoisuuksiin ojitetulla rämeellä

Rautjärvi H., Kaunisto S., Tolonen T. Jatkolannoitusten vaikutus männyn (Pinus sylvestris L.) tilavuuskasvuun ja neulasten ravinnepitoisuuksiin ojitetulla rämeellä.

English title: The effect of repeated fertilizations on volume growth and needle nutrient concentrations of Scots pine (Pinus sylvestris L.) on a drained pine mire

Tiivistelmä

The nutritional status of Scots pine (Pinus sylvestris L.) stands growing on a nitrogen-rich, drained pine mire in western Finland was studied after refertilization using needle analysis and the response of stand volume growth. The main aim was to find out if K-refertilization alone could maintain or increase the volume growth without causing a nutrient imbalance between K and P. The initial fertilization was carried out in 1961 - 62 using PK fertilizer and refertilized in 1976 and 1989 with different combinations of nitrogen (N), phosphorus (P), potassium (K) and boron (B). Needle samples were taken and the tree stands were measured in 1996 and 2001. Peat samples were taken in 2002. According to the needle analysis results, the concentration of P was above the deficiency level in all the treatments in 1995 and 2000. There was a clear shortage of K in the needles collected from the control treatment, but the concentration of K was still adequate 12 years after the latest K refertilization. The volume growth of the stands clearly responded to the 1976 refertilization with K alone, which was probably due to the fact that trees had been suffering from K deficiency before the first refertilization and 14-15 years thereafter. After the second refertilization, the combination of K and P increased the annual volume growth more than refertilization with K alone. This indicates that about 25 years after the initial fertilization, there was already some shortage of P. The highest stand volume was associated with the combined K (1976) and PK (1989) refertilization treatment. Refertilization with N did not increase stand volumes during the study period.

Avainsanat
fertilization; potassium; volume growth; refertilization; pine mire; phosphorus yield

Tekijät
  • Rautjärvi, The Finnish Forest Research Institute, Joensuu Research Centre, Box 68, FIN-80101 Joensuu Sähköposti ei.tietoa@nn.oo (sähköposti)
  • Kaunisto, Sähköposti ei.tietoa@nn.oo
  • Tolonen, Sähköposti ei.tietoa@nn.oo

Vastaanotettu 31.10.2017 Julkaistu 1.1.2004

Katselukerrat 1091

Saatavilla http://suo.fi/article/9833 | Lataa PDF

Creative Commons License CC BY-NC-ND 4.0

Rekisteröidy
Click this link to register to Suo - Mires and peat.
Kirjaudu sisään
Jos olet rekisteröitynyt käyttäjä, kirjaudu sisään tallentaaksesi valitsemasi artikkelit myöhempää käyttöä varten.
Ilmoitukset päivityksistä
Kirjautumalla saat tiedotteet uudesta julkaisusta
Valitsemasi artikkelit
Hakutulokset
Rautjärvi H., Kaunisto S. et al. (2004) The effect of repeated fertilizations on volume .. Suo - Mires and peat vol. 55 no. 2 artikkeli 9833
Aro L., Kaunisto S. (2003) Effect of refertilisation and growing on the nut.. Suo - Mires and peat vol. 54 no. 2 artikkeli 9826
Pietiläinen P., Kaunisto S. (2003) The effect of peat nitrogen concentration and fe.. Suo - Mires and peat vol. 54 no. 1 artikkeli 9824
Kaunisto S., Sarjala T. (2002) Estimating potassium nutrition of Norway spruce .. Suo - Mires and peat vol. 53 no. 1 artikkeli 9819
Hartman M., Kaunisto S. et al. (2001) Peat properties and vegetation along different t.. Suo - Mires and peat vol. 52 no. 2 artikkeli 9813
Sarjala T., Kaunisto S. (2000) Ectomycorrhizae in Scots pine seedlings at diffe.. Suo - Mires and peat vol. 51 no. 3 artikkeli 9805
Lauhanen R., Kaunisto S. (1999) Effect of drainage maintenance on the nutrient s.. Suo - Mires and peat vol. 50 no. 3-4 artikkeli 9785
Kaunisto S., Moilanen M. et al. (1999) Effect of apatite and phlogopite application on .. Suo - Mires and peat vol. 50 no. 1 artikkeli 9780
Kaunisto S., (1992) Effect of potassium fertilization on the growth .. Suo - Mires and peat vol. 43 no. 2 artikkeli 9691
Kaunisto S., Ferm A. et al. (1991) Peatland forestry research in Estonia and Latvia Suo - Mires and peat vol. 42 no. 3-4 artikkeli 9683
Kaunisto S., Viinamäki T. (1991) Effect of fertilization and alder (Alnus incana).. Suo - Mires and peat vol. 42 no. 1 artikkeli 9678
Kaunisto S., (1988) On nutrient amounts and their sufficiency for wo.. Suo - Mires and peat vol. 39 no. 1-2 artikkeli 9637
Kaunisto S., (1984) Fertilization at stand establishment and referti.. Suo - Mires and peat vol. 35 no. 4-5 artikkeli 9595
Kaunisto S., (1982) Peatland and their use for forestry in china Suo - Mires and peat vol. 33 no. 2 artikkeli 9549
Kaunisto S., (1981) Natural regeneration of Betula pendula and B.pub.. Suo - Mires and peat vol. 32 no. 3 artikkeli 9523
Kaunisto S., (1968) Fertilized garden peat as a substratum for germi.. Suo - Mires and peat vol. 19 no. 3-4 artikkeli 9356