6 
<XTENT OF DAMAGE, 
he extent of damage, as affecting natural reproduction, planta: 
mr \ 
VE 
y 
Ly 
AS 
Siecaw Oly 
‘| 
Fig. 5.—Work of white-pine weevil, showing result of killed terminal 
shoot in 8-year-old top of large sapling. (Original.) 
tions, and tim- 
ber of commer- 
cial size in the 
forest, is difficult 
to estimate; but 
it is an impor- 
tant item to be 
charged to the 
losses in com- 
growth 
of white pine and 
is therefore a for- 
estry problem 
which must de- 
mand special at- 
tention in the 
future manage- 
ment of wood- 
lots and forests, 
wherever the tree 
predominates. 
mercial 
FAVORABLE AND 
UNFAVORABLE 
CONDITIONS FOR 
DESTRUCTIVE 
WORK BY THE 
WEEVIL. 
The most fa- 
yorable condi- 
tion for serious 
injury by this 
weevil consists 
in a scattering or 
open pure stand 
of young white 
pine where the 
erowth is healthy 
and rapid, such 
as is found in 
open planta- 
tions, in aban- 
doned fields, and 
around the bor- 
