Forest manageinent research was concerned with studies of the effects 

 of: 



1) Pruning young red pine at early stages (two years and over 

 after planting). 



2) Planting intervals of red pine at six, nine and twelve foot 

 spacing, 11 years after planting, 



3) Growth and survival of basswood planted in a hard maple 

 stand which had been subjected to three degrees of thinning. 



Forest chemical studies were expanded by an experiment on the use of 

 2, 4-D ester as an eradicant of hawthorn and wild apple. Detailed information was 

 collected in co-operation with the South-Central Regional Unit on the release of 

 white pine, red pine and white spruce from underbrush by the application of 

 chemicals. Some of the information was analyzed on the degree of kill of the 

 underbrush and on the growth of the conifers two years after treatment. 



Mechanical research was devoted to the development of a special 

 dendrometer tape for measuring seasonal growth of trees up to four inches. These 

 are being tested on red pine at East Gwillimbury research area for recording the 

 effects of cultural treatments. 



Soil conservation research was confined to gully erosion studies at 

 John Pearce Park. Here black locust planted along the gully one year previously 

 were tallied. It was observed that the locusts were becoming established where 

 there was not excessive slippage of the banks. 



South-Eastern Region 

 Prescribed Burning . 



The studies of prescribed burning and its use as a silvicultural 

 method for the improvement of low grade hardwood stands were continued through- 

 out 1960. A second series of burns was completed according to plan at Swan Lake, 

 Algonquin Park, and the work was expanded to include two additional areas in the 



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