%0 Article
%T Effect of nitrogen fertilization on photosynthesis and growth in young Scots pines. Preliminary results
%A Kellomäki, Seppo
%A Puttonen, Pasi
%A Tamminen, Heikki
%A Westman, Carl Johan
%D 1982
%J Silva Fennica
%V 16
%N 4
%R doi:10.14214/sf.a15084
%U https://silvafennica.fi/article/5169
%X <p>Application of nitrogen at levels of 200, 400 and 600 kg ha<sup>-1</sup> resulted in increases of 35, 18 and 12% in the photosynthetic rate in young Scots pine (<em>Pinus sylvestris</em> L.). The number of buds, degree of branching, and needle size were positively related to the amount of nitrogen applied. A 10–40% increase in the average needle area was found. A positive correlation was found between total photosynthesis and stem growth.</p>
<p>The PDF includes a summary in Finnish.</p>