. Silvicoltura canadese ufficiale. Le foreste e la silvicoltura -- Canada periodici. In Manitoba, dove la quota è inferiore, albero che cresce è un sistema molto più semplice questione di nel Sud Al- berta. Infatti se si esce fuori di ac- contare la probabile lesione da in- sette, la creazione di un luogo di riparo cinghia in Manitoba e Sas meridionale- katchewan è prevista la corretta varietà vengono utilizzati e il terreno preparato correttamente, a. comparativamente easv mat- ter. Per quanto riguarda le varietà di viti, quelli generalmente utilizzati sono Manitoba maple, frassino verde, American elm. Pioppo russo, lettino- tonwood e salici russo. Abbiamo altre varietà whic

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. Canadian forestry journal. Forests and forestry -- Canada Periodicals. In Manitoba, where the elevation is lower, tree growing is a much simpler matter than in Southern Al- berta. In fact if one leaves out of ac- count the probable injury from in- sects, the establishment of a shelter belt in Manitoba and Southern Sas- katchewan is, provided the proper varieties are used and soil properly prepared, a. comparatively easv mat- ter. As to varieties, the ones generally used are Manitoba maple, green ash, American elm. Russian poplar, Cot- tonwood and Russian willows. We have other varieties which are very useful for ornamental purposes, such as birch and mountain ash, and which would also do well in shelter belts if young plants could be secured in suf- ficient quantities at a reasonable cost. Among the conifers, the Scotch, lodgepole and jack pines, the white spruce and Colorado spruce and tam- arac are hardy everywhere. The bal- sam fir, black spruce, mountain dwarf pine, Cembra or Swiss stone pine, Euro])can larch and Siberian larch are (|uite hardy, but more useful for ornamental work, either owing to their habit of growth or to the difiFi- culty of securing young stock. In igoT the Dominion government commenced a system of co-operative tree planting whidi has worked out very well and has become very popu- lar among the farmers on the prai- ries. At that time, however, the Forestry Branch had many things to contend with : the general impression was that trees could not be grown, and for several reasons considerable dif-rii^v was experienced in gt'tting any farmers to start in on shelter belt work There was a little oppo- sition on the part of the nurserymen, which subsequent results prove to have been very short sighted on their part, as there is no doubt that the work of the Forestry -Branch has enormously increased the general in- terest in tree planting and horticul- ture generally, and consequently greatly widened the demand for all kinds of nursery stock, mor

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