Tapio Lehtiniemi , Juhani Sarasto

Kokemuksia rauduksen istutuksesta ojitetuille soille.

Lehtiniemi T., Sarasto J. (1973). Kokemuksia rauduksen istutuksesta ojitetuille soille. Silva Fennica vol. 7 no. 1 article id 4876. https://doi.org/10.14214/sf.a14706

Abstract

The aim of the present study was to assess whether two-year old Betula verrucosa Ehrh. (now Betula pendula Roth.) transplants can be used in afforestation of drained peatlands and what factors affect the development of the young trees. The seedlings were planted in 1967. The site was repair planted next spring due to mortality caused by a undefined fungal disease, and the plantations were fertilized with NPK fertilizer (soil application. The seedlings were measured twice a year until the autumn 1970.

Only 28% of the original transplants, and 73.4% of the repair plantations were alive in 1970. In some cases, fertilization improved the results, while in others it was detrimental to the trees or had no effect on survival. According to peat analysis, the poor survival and development of the plants could be due to the too high ratios of N/Ca and N/P. Stunted or dead trees displayed often necrosis caused by Godronia multispora. According to the experiences, Betula verrucosa plantations are inferior to those obtained with Scots pine (Pinus sylvestris L.). In addition, the results indicate that in old draining areas calcium and phosphorus are often too low in comparison to nitrogen.

The PDF includes a summary in English.

Original keywords
taimet; turvemaat; uudistaminen; ojitetut suot; kuolleisuus; rauduskoivu; ravinnetasapaino

English keywords
Betula pendula; regeneration; drained peatlands; planting; nutrient deficiency; mortality; seedlings; Betula verrucosa; Godronia multispora

Published in 1973

Views 3725

Available at https://doi.org/10.14214/sf.a14706 | Download PDF