Potassium Content in Living Bark, Cambium and Wood in Telation to Electrical Resistance and Tree Condition in the Silver Fir (Abies alba Mill.)

1996

S. 39-42

7 Lit. Ang.

Unselbständiges Werk

200101803

The concentrations of potassium were determined in: (a) the last formed wood, (b) the vascular cambial zone with conductive (noncollapsed) phloem, (c) the youngest nonconductive (collapsed) phloem and the (d) oldest nonconductive phloem, by atomic absorption flame spectroscopy in three unaffected and three heavily affected silver fir (Abies alba Mill.) trees. The realitionship between the electrical resistance (ER) of living tissues and K content was investigated. The tissues of unaffected trees were generally characterized by a higher K content and correspondingly lower ER. In all trees the K content was highest and ER lowest in the vascular cambial zone with conducting phloem, followed by nonconducting phloem and youngest xylem.