A plan has been submitted for conducting a plantation assessment 

 program to study planting problems on shallow soils in the Lindsay district. 



FOREST TREB BREEDING 



Breeding work with white pine, aspen poplars ^ and two-needled pines 

 continued to be the main projects during the year under review* 



White Pine 



The provenance test plantations established in 1950 and 1951 were 

 tallied* The results show that the materials tested can be subdivided into 

 a northern group, growing on acid soils of granitic origin, and a southern 

 group growing largely on calcareous soils* The strains within each group show 

 similar survival and rate of growth. Northern strains show slow growth €Uid 

 much damplng-off in the nursery when grown in southern Ontario* Southern strains 

 show poor survival and growth in northern plantations* 



The acquisition of new materials comprised scions from six selected 

 plus-trees from southern Ontario and seeds of 11 populations of western white 

 pine from Spokane, Wash* Four seedling populations of southern white pine 

 were received from the Petawawa Forest Experiment Station to be grown and 

 tested at the Southern Research Station* 



Scions of six hybrid pines were grafted on to low side branches of old 

 trees, to induce early flowering* Scions of some early flowering Scotch pine 

 and Japanese red pine were grafted on to white pine seedlings, as the first step . 

 in the production of double grafts that are expected to induce early flowering* 

 An experimental grafting on Japanese black pine resulted in good take and 

 survival of Balkan and Himalayan white pine, and no survival of eastern and 

 western white pine* An experiment in fall grafting, using nine different 

 combinations of inner and outer bags to protect the scions through the winter, 

 was started* 



In hybridization a new cross, Balkan x Himalayan white pine, made in 

 ^953) produced many good seeds* Crosses of eastern white x Japanese white and 

 western white x Balkan white pine were effected on a fairly large scale in 195^. 



Black currant shoots with green leaves were used in the inoculation 



