FOREST PROTECTION 36 



(2) Protect insectivorous animals. 



(3) Destroy infested plants or, in the case of NematuB erichsonii^ in- 

 fested woodlands. 



IV. PROTECTION AGAINST INSECTS INFESTING BRANCHES, 

 TWIGS, SHOOTS. 



A. Against Scolytidjb. 



(1) Collect and burn affected shoots before the larva; begin to pupat* 

 therein. 



(2) Use logging debris as traps. 



(3) Burn logging debris, or swamp the crowns of felled trees. 



B. Against Curculionid^ (Twig Weevils). 



(1) Avoid logging and thinning of pine woods near young pines in the 

 seedling or in the sapling stage. 



(2) Remove the top shoots of white pine attacked by Pissodes strobi, 

 and keep them in a barrel covered with netting, in the nursery, so as to kill 

 the weevil without destroying its parasites. 



(3) Remove, char, peel or poison fresh pine stumps. 



(4) Apply to the terminal shoots of white pine, during April or May, 

 a spray consisting of fish oil soap, Paris green and carbolic acid diluted in 

 water (Bureau of Forestry', Bui. No. 22, p. 59). 



(5) Use trap trees for oviposition, consisting of fresh-cut pine billets 

 buried obliquely with one end protruding abtfve ground. Bum these traps 

 after the eggs have hatched. 



(6) Collect the adults underneath large pieces of fresh pine bark placed 

 on the groimd. The adults spend the hot hours of the day underneath the 

 bark attracted by the smell of rosin. 



C. Against Cerajibtcid^. 



(1) Collect limbs broken off by wind and infested by Elaphidion (Oak 

 pruner). 



(2) Cut off shoots or saplings affected by larvse. 



D. Against Tineid^ and Tortricidje. 



(1) Remove infested shoots. 



(2) Apply insecticides. 



E. Against Cicadidje. 



(1) Collect larvse. 



(2) Protect crows and owls. 



