Show white pine forest Is threatened by fungus the future of all white pine forests Is threatened by a fungus known as white pine blister rust which attacks the pine frees only after it hns has undergone it a period of development on oil ill the leaves of currant or gooseberry plants the cultivated black currant Is so extremely susceptible to the disease that it Is a distinct menace to the white pine timber supply it Is responsible for establishing the blister rust in white pine forests which would otherwise lia have e remained free from the dis 7 ense A As a warning of tills this threat to a very important forest tree the dominion department of agriculture has issued it circular on the white pine blister rust in which the disease and its effects are described and control measures proposed on white pines pine tho the disease first of all ages and unless controlled prevents the growing of if these trees in ili whore where currant nud goose gooseberries berries anre abundant |