PERFORMANCE OF SEVENTEEN POPLAR CLONES IN SOUTH CENTRAL SASKATCHEWAN

Survival of seventeen poplar clones six years after planting in 1951 ranged from 0 to 100 per cent. Total height of the surviving 13 clones in 1956 varied from 11 to 25 feet. FNS No. 44-52, a natural hybrid of P. deltoides, was the outstanding clone in the test with a survival of 94 per cent and height of 25 feet. Three clones, FNS No. 44-52, Saskatchewan, and BNW No. 4 demonstrated resistance to disease (Cytospora canker), while ten clones proved highly susceptible. Survival and growth for FNS No. 44-52, 38P38, tristis No. 1 and gelrica were superior to those of Northwest poplar, which exhibited a survival of 75 per cent and height of 18 feet.