NOTE ON THE PLANTING OF POPLARS AT KININVIK. 73 



These figures show a more rapid girth-growth than the figures 

 for Populus trichocarpa quoted by Lt.-Col. Balfour, but as the con- 

 ditions are different the comparison must be taken with reserve. 

 M. Marion distinguished two varieties of Peuplier Suisse Sarce, 

 the white and the red, but he recommends the latter as being of 

 the more rapid growth, hardier and less exacting as to soil. 



4. With regard to the method of raising the plants in the 

 nursery. 



Lt.-Col. Balfour has used 2-year-old branch cuttings kept in 

 the nursery for two years, and planted out at 6 feet high. 



Professor Henry advises keeping the cuttings in the nursery 

 till rooted, and then planting them out. The cuttings should 

 be from 4 to 6 feet long, and should remain one year in the 

 nursery. Cuttings should be taken from stool shoots rather 

 than from side branches. 



M. Marion recommends either — 



(1) Large cuttings planted out at a depth of 1 to 2 feet, or 



(2) Rooted plants planted in pits. 



Mr E. R. Pratt recommends planting at 10 to 20 feet high — 

 the plants to be raised from 7-inch sets kept in the nursery for 

 two years. 



5. With regard to the method of forming plantations of 

 poplars, M. Marion gives the following instructions : — 



( 1) Planting direct by slips or cuttings. 



Date of planting — 15th November to 1st May. The slips 



should be cut well in advance of planting, and kept in 



water — they may be kept in water from 15th November 



to the end of April. 

 The slips may be cut from trees in the nursery, and 



should be two to four years old — he does not give 



the dimensions. 

 The slips should be sharpened like pea stakes. 

 A hole should be made in the ground with an iron rod of 



smaller diameter than the slip. 

 The slip should be put into the hole to a depth of 



18 inches. 

 No branches should be left on the slip. 

 Two men can plant 500 slips in a day — (presumably this 



does not cover cutting, sharpening, and transport from 



nursery). 

 This method is suitable for damp, peaty ground. 



