1921-22 DEPARTMENT OF LANDS AND FORESTS 237 



As a result of this improvement cutting only sound healthy vigorous trees 

 are left, while with the removal of slash, fire hazard is minimized. 



Moreover, underplanting was made possible, since by the removal of all 

 undesirable material, a greater growing area was obtained and the resultant re- 

 duction of crown density permitted a greater percentage of light ingress, essential 

 to the successful development of the underplanting. 



Protection {Disease and Insects). — The policy of eradication of members of 

 the family Ribes for the prevention of the infection of nursery material with white 

 pine blister rust was continued during the recent summer. Three men were 

 constantly employed on this work. 



An immunity belt of over one mile in width surrounding the nursery has 

 been freed of host plants, up to the present there has been no evidence of infection 

 of nursery stock from this source. 



The destructive work of the white pine weevil has also been held in check 

 by removing all attacked leaders in the older plantations. An interesting and 

 important observation relative to the work of combating this pest may be noted 

 that where the white pine is planted in conjunction with other conifers or along 

 the border, or under an older stand of hardwoods little or no evidence of white 

 pine weevil has been found. 



Nursery Stock on Hand December 14th, 1922. 

 Conifers 



Balsam 7,980 



Cedar, White 716,400 



Larch, European. . 1,469,820 



Pine, White 2,643,000 



Pine, Scotch 1,670,100 



Pine, Jack 4,196,300 



Pine, Red 2,120,700 



Pine, Austrian 12,300 



Spruce, White • 1,545,000 



Spruce, Norway 571,000 



14,952,600 



Hardwoods 



Ash, White 4,450 



Birch, White 2,300 



Basswood , 1,250 



Chestnut 6,000 



Cherry, Black 900 



Elm, White 84,200 



Hickory, Shellbark 400 



Hackberry 550 



Locust, Honey 900 



Locust, Black 2,000 



Maple, Soft 116,300 



Maple, Hard 16,500 



Maple, Manitoba 1,300 



Oak, Red 24,400 



Poplar Cuttings 250,000 



Sycamore 450 



Tulip 1,500 



Walnut, Black 30,000 



Walnut, White 3,000 



Willow Cuttings 50,000 



596,400 



Conifers 14,952,600 



Hardwoods 596,400 



Net Total 15,549,000 



