Part VII] Beeson: Life History of Toon Borer. 
67 
PART IV. 
CONTROL MEASURES. 
Several writers have recorded that the pruning and burning of 
infested shoots on saplings, which it is desired to protect, are without 
successful results. From the seasonal history studies it is evident 
that this must be so, since the larvae so destroyed amount to a very 
small fraction of the individuals existing on the area in one season. 
The following control measures are suggested. 
1. Protection of young toon plantations. 
1. Young plantations with no old or flower-bearing toon trees in 
the neighbourhood are (theoretically) safe from attack. The simplest 
method of establishing a plantation lies in the previous removal of all 
old host-trees in the vicinity. 
2. Young plantations with old or flowering toon and other host- 
trees permanently in the neighbourhood are subject to attack from 
their second or third year onwards, but may be protected as 
follows :— 
(a) At the time of appearance of the flowers, all flower-bearing 
toon trees should be banded with a strip of sacking, about 
12" wide, and in length sufficient to allow an overlap of 6". 
The sack-band should be tied with a cord at breast-height 
on the trunk and folded double over the binding cord. 
(See fig. 2). 
(b) At intervals of not less than 10 days during the flowering and 
fruiting season, the banded trees should be visited, and all 
larvae and cocoons found inside the sack-bands removed 
and destroyed. (See later, p. 69) When no more larvae are 
obtainable, collection should be discontinued. 
(c) About one month after the fruits are ripe (or collection 
ceases), the plantation should be traversed and all shoots 
found to be attacked cut out and burned. 
(d) If a high degree of attack is found in the plantation, a second 
pruning should be carried out in the cold weather or three 
months before the normal flowering date. 
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