Rit Mógilsár - 2014, Page 86

86 Rit Mógilsár 31/2014
Heimildir
Gruffman, L., 2013. Nitrogen nutrition and
biomass distribution in conifers Aspects of
organic and inorganic nitrogen acquisition.
Acta universitatis agriculturae sueciae.
Doktorsritgerð nr. 2013:22.
Gruffmann, L., Ishida, T., Nordin, A. &
Näsholm, T., 2012. Cultivation of Norway
spruce and Scots pine on organic nitrogen
improves seedling morphology and field
performance. Forest Ecology and Mangage-
ment, 276: 118-124.
Swetree technologies. Skoðað 25.2.2014.
http://swetree.com/seedling-growth-vigor/
index.php
Veðurstofa Íslands. Skoðað 24.2.2014.
http://www.vedur.is/um-vi/frettir/nr/2734