Risto Lauhanen 
,
Mikko Moilanen,
Klaus Silfverberg,
Heikki Takamaa,
Jorma Issakainen
Puutuhkalannoituksen kannattavuus eräissä ojitusaluemänniköissä
Lauhanen R., Moilanen M., Silfverberg K., Takamaa H., Issakainen J. Puutuhkalannoituksen kannattavuus eräissä ojitusaluemänniköissä.
English title: The profitability of wood ash-fertilizing of drained peatland Scots pine standsTiivistelmä
The profitability of wood ash-fertilizing (5-16 t ha-1) of four drained peatland Scots pine stands in central Finland was investigated. The profitability of forest drainage alone and forest drainage plus ash-fertilization was compared. After 44-56 years, the wood ash-fertilization had increased mean productivity by 3.1-12.1 m3 ha-1 a-1. Using an interest rate of 3 % and without subsidies, the net present value of the stands was 2500-20300 FIM ha-1 higher as a result of the ash-fertilization than the value given by forest drainage alone. The real internal rate of return due to ash-fertilization without subsidies was 3.7-9.3 %. The interest rate, the fertilization dose and related costs, and the stumpage prices affected profitability. The state forest improvement subsidies further increased the profitablity of ash-fertilization. Key words: forest fertilization, internal rate of return, net present value, Scots pine, stem volume, wood ash
Avainsanat
Scots pine;
wood ash;
forest fertilization;
internal rate of return;
net present value;
stem volume
-
Lauhanen,
The Finnish Forest Research Institute, Kannus Research Station, FIN-69100 Kannus, Finland
Sähköposti
ei.tietoa@nn.oo
- Moilanen, Sähköposti ei.tietoa@nn.oo
- Silfverberg, Sähköposti ei.tietoa@nn.oo
- Takamaa, Sähköposti ei.tietoa@nn.oo
- Issakainen, Sähköposti ei.tietoa@nn.oo
Vastaanotettu 31.10.2017 Julkaistu 1.1.1997
Katselukerrat 788
Saatavilla http://suo.fi/article/9767 | Lataa PDF
