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Division of Research 



fifteen years of age and plots of mixed ages in which the growth pattern of the trees 

 before and after liberation is being recorded. The time and manner in which the trees 

 become productive will be determined. Additions were made to the nursery collection of 

 young trees which are the progeny of highly productive parents. These trees will be 

 set out permanently on sites to be chosen within the next three years. 



Seed Treatment 



The coating or pelleting of seeds for use in mechanical seeders still continues 

 at the Southern Research Station, and the process has been perfected to a point where 

 a specially designed seeder (the Brohm Seeder) has been completed to use these 

 pellets for actual seeding operations in the forest where such an operation is feasible. 

 The other aspects of coating, such as the addition of fungicides, rodent and insect 

 repellents, fertilizers and hormones, are still being studied with reasonable prospects 

 of ultimate success. Experimental seeding operations are being conducted in the Port 

 Arthur district and Manitoulin Island, in co-operation with pulp and paper companies. 



Forest Tree Breeding 



Work continued during the year in the three main projects: White Pine, 

 Poplars, and the Arboretum. 



Rf^ravch u-orkrrs adjusting pump on plankton sampler. 



