Dieback diseases-a cause of boron deficiency in forest trees
Dieback diseases-a cause of boron deficiency in forest trees
S. H. Bangash and B. N. Gardiner
ABSTRACT
The object of this study was to provide some basic
information of the optimal growing conditions for Acacia
melanoxylon, Eucalyptus pauciflora, Eucalyptus viminalis
and Pinus radiata and to suggest ways and means of
diagnosing the morphological growth abnormalities and
deficiency symptoms caused by boron nutrient. The
importance of boron nutrition for A. melanoxylon, E.
pauciflora and E. viminalis was confirmed. Absence
of boron from mineral nutrition in Hoagland's nutrient
solution in pot experiments resulted in
terminal shoot-diebackin A. melanoxylon, and
apical bud-diebackin E. pauciflora and E. viminalis. Injury due to insufficient boron in P. radiata developed slowly. Application of boron nutrient and increased growth increment and foliar boron levels in these species.
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March 1985
Vol. 35, Iss. 1
