Full text of this article is only available in PDF format.

Anna Saarsalmi (email), Erkki Lipas, Jouni Mikola, Teijo Nikkanen, Eira-Maija Savonen

Effect of fertilization on flowering and seed crop in Scots pine seed orchards.

Saarsalmi A., Lipas E., Mikola J., Nikkanen T., Savonen E.-M. (1994). Effect of fertilization on flowering and seed crop in Scots pine seed orchards. Silva Fennica vol. 28 no. 3 article id 5530. https://doi.org/10.14214/sf.a9170

Abstract

The aim of the study was to obtain information needed in preparing more precise fertilization recommendations for seed orchards. The fertilization requirement was estimated on basis of soil and needle analyses, and by investigating the effects of different fertilization treatments on male and female flowering, size of seed crop and seed quality.

The study was carried out in two Scots pine (Pinus sylvestris L.) seed orchards in Southern Finland, one established on forest soil in 1971 and 1972, and the other on a peat field in 1974. 10 clones and 39 grafts from each clone were selected randomly from both orchards in autumn 1985. The treatments consisted of N, P and K in various combinations, micronutrients, wood ash and grass control. The orchards were fertilized in spring 1986.

There were statistically significant differences between the clones in both orchards as regards amount of flowers, size of the seed crop and seed quality. The annual variation in flowering and the size of the seed crop was also large. In general, the seeds from cones collected in October matured well and their germination percentage was high. The effects of fertilization on flowering, the size of seed crop and seed quality were small. It would appear that the size of the crop can be affected to a much greater extent by favouring clones with a high seed-producing capacity than through fertilization. Fertilization is unnecessary if the nutrient status of the soil is satisfactory.

Keywords
Pinus sylvestris; fertilization; germination; flowering; seed orchards; clones; seed crop; weight

Published in 1994

Views 6009

Available at https://doi.org/10.14214/sf.a9170 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Send to email
Siitonen M., (1993) Experiences in the use of forest management plan.. Silva Fennica vol. 27 no. 2 article id 5509 (remove) | Edit comment
Folkeson L., (1981) Impact of air-borne copper and zinc pollution on.. Silva Fennica vol. 15 no. 4 article id 5144 (remove) | Edit comment
Helle P., Muona J. (1985) Invertebrate numbers in edges between clearfelli.. Silva Fennica vol. 19 no. 3 article id 5245 (remove) | Edit comment
Peltola H., Aho J. et al. (1993) Swaying of trees as caused by wind: analysis of .. Silva Fennica vol. 27 no. 2 article id 5505 (remove) | Edit comment
Löyttyniemi K., (1971) Influence of damage caused to needles of Norway .. Silva Fennica vol. 5 no. 1 article id 4835 (remove) | Edit comment
Kärkkäinen M., Hakala H. (1983) Effect of log size on the bending and compressio.. Silva Fennica vol. 17 no. 2 article id 5182 (remove) | Edit comment
Prokazin E. P., (1980) Geographic variation in forest trees. Silva Fennica vol. 14 no. 1 article id 5064 (remove) | Edit comment
Mikola P., (1979) Environmental content of forestry education in E.. Silva Fennica vol. 13 no. 3 article id 5037 (remove) | Edit comment
Kaitera J., Aarnio L. et al. (2021) Naohidemyces vaccinii sporulates on wild .. Silva Fennica vol. 55 no. 5 article id 10568 (remove) | Edit comment
Koski V., (1980) Minimum requirements for seed orchards of Scots .. Silva Fennica vol. 14 no. 2 article id 5076 (remove) | Edit comment
Dean C., (2003) Calculation of wood volume and stem taper using .. Silva Fennica vol. 37 no. 3 article id 495 (remove) | Edit comment
Matulevičiūtė D., Motiejunaite J. et al. (2018) Decline of a protected coastal pine forest under.. Silva Fennica vol. 52 no. 2 article id 7699 (remove) | Edit comment
Jalkanen R., Kaitera J. (1994) Gremmeniella abietina produces pycnidia in canke.. Silva Fennica vol. 28 no. 2 article id 5402 (remove) | Edit comment
Ojansuu R., Henttonen H. (1983) Estimation of the local values of monthly mean t.. Silva Fennica vol. 17 no. 2 article id 5183 (remove) | Edit comment
Saarsalmi A., Lipas E. et al. (1994) Effect of fertilization on flowering and seed cr.. Silva Fennica vol. 28 no. 3 article id 5530 (remove) | Edit comment
Your search results