MORTALITY Ol' WIIITU-PINE AND RED-PINK PLANTATIONS 311 



20 and packed the following day. This stock remained in the hampers 

 until the 24th, when it was carried to the experimental plots and 

 planted. 



All trees were carefully set out by the hole method after a layer of 

 sod approximately i8 inches square had been removed. They were 

 spaced six feet by six feet. The soil was moist, easily worked, and in 

 excellent condition for planting. 



Record of Measurements 



The records of height growth for the current season were taken every 

 week, starting May i. On each plot 50 per cent of the trees were 

 measured, the same trees being measured each successive time. For 

 the trees of each plot the average growth was obtained by adding the 

 total growth and dividing by the number of trees measured. Table i 

 shows the average height growth of each grade of each species by 

 weeks. There were approximately 140 trees measured on each plot. 

 Root development was ascertained by selecting for each grade several 

 trees of average height growth, then carefully removing and measuring 

 them. This was done after growth had ceased, and hence no data of 

 weekly root growth can be presented. 



Grass and weeds had no mechanical effect on the growing stock dur- 

 ing the growing period. 



Table 2 shows the root lengths of each class before and after pianling 



Table 2 

 [Based on two average trees of each grade] 



Stock. 



2-2 white pine { B 



c 



2-1 white pine. 



2-1 red pine. 



r 



At start of 

 growth. 



(Inches') 

 14 -23 



I r . 5-16 

 9 -13 



5-7 

 6 -10 



6-8 



LeriKth of roots. 



At end of 

 growth. 



(Inches) 

 19 -28 



14 -19-5 

 II-5-I7 



8 -9-5 

 8 -ir.5 



-10.5 



Remarks. 



Roots thickened and in a com- 

 pact mass for ten inches. 



Same as with A. 



Bimching and thickening not 

 so prominent. 



Growth only fair. 



Growth more uniform than 

 with white pine. Thicken- 

 ing and bunching not so no- 

 tioealile. 



