S. Andersson et B. Soderstrom, EFFECTS OF LIME (CACO3) ON ECTOMYCORRHIZAL COLONIZATION OF PICEA-ABIES (L) KARST - SEEDLINGS PLANTED IN A SPRUCE FOREST, Scandinavian journal of forest research, 10(2), 1995, pp. 149-154
In two consecutive years, seedlings of Norway spruce (Picea abies) wer
e planted in a 50-yr-old Norway spruce forest in limed (3.8 tons CaCO3
ha-1) and control plots. After 6 months they were harvested and the m
ycorrhizal status of the roots was analysed. Six types of mycorrhiza w
ere distinguished. Three decreased after liming, two increased and one
was not affected consistently by the liming. The effects on the total
mycorrhizal colonization of the roots were opposite for the two years
, indicating that the effects of liming are influenced strongly by oth
er environmental factors. Statistical analysis also revealed pronounce
d natural variation in space. An inventory of the sporocarp-producing
fungi showed that the number of saprotrophic species producing sporoca
rps was significantly higher in the limed plots whereas the number of
ectomycorrhizal species was lower in the limed plots, compared with th
e control plots. It is concluded that more information is needed conce
rning the effects of liming on different soil types before any general
conclusions can be made about its effects on mycorrhizal colonization
.