A note on first time widespread attack of steam blister rust in young blue pine plantations on Naran, upper Kaghan forests
A note on first time widespread attack of steam blister rust in young blue pine plantations on Naran, upper Kaghan forests
Zakaullah
ABSTRACT
A recent visit to Naran forests revealed
the occurrence of stem blister rust (Cronartium
ribicola Fischer) on young blue pine (Pinus
wallichiana A. BJackson) crop planted during
1984-85 in Compartment Nos. 9 and 10, Naran
Forest Range. The incidence of attack was
found to vary from 20-30%. It was observed
that most of the infected plants had already
died while the remaining exhibited blisters,
swellings and girdling of stem, death of small
shoots, needles turnings to reddish brown, resin
exudation and eventually leading to the death of
entire plant. The dead wood was found attacked
by the borers (insects).
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March 1994
Vol. 44, Iss. 1
