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Seppo Kellomäki, Pasi Puttonen, Heikki Tamminen, Carl Johan Westman

Effect of nitrogen fertilization on photosynthesis and growth in young Scots pines. Preliminary results

Kellomäki S., Puttonen P., Tamminen H., Westman C.J. (1982). Effect of nitrogen fertilization on photosynthesis and growth in young Scots pines. Preliminary results. Silva Fennica vol. 16 no. 4 article id 5169. https://doi.org/10.14214/sf.a15084

Abstract

Application of nitrogen at levels of 200, 400 and 600 kg ha-1 resulted in increases of 35, 18 and 12% in the photosynthetic rate in young Scots pine (Pinus sylvestris 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.

The PDF includes a summary in Finnish.

Keywords
fertilization; nitrogen fertilization; Scots pine; Pinus sylvestris; photosynthetic rate; needle area; stem growth

Published in 1982

Available at https://doi.org/10.14214/sf.a15084 | Download PDF

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Kellomäki S., Puttonen P. et al. (1982) Effect of nitrogen fertilization on photosynthes.. Silva Fennica vol. 16 no. 4 article id 5169