. Walnut growing in Oregon . ^ increase the nut-bearing boughs and will train the treeupward. This seems to be the most sensible method of pruningyet proposed. NO DISEASES INJURE OREGON WALNUTS The soft, moist atmosphere of western Oregon, so favorable tothe English walnut, seems wholly unfavorable to pests thatdestroy the crop in other climates. A crop has never been lostor materially injured in Oregon through these sources; in fact, 44. Old Walnut Trees Planted About iSjO. Near McMinnville. on the Yamhill River SO free are the Oregon trees of such enemies that little thoughtor attention has
. Walnut growing in Oregon . ^ increase the nut-bearing boughs and will train the treeupward. This seems to be the most sensible method of pruningyet proposed. NO DISEASES INJURE OREGON WALNUTS The soft, moist atmosphere of western Oregon, so favorable tothe English walnut, seems wholly unfavorable to pests thatdestroy the crop in other climates. A crop has never been lostor materially injured in Oregon through these sources; in fact, 44. Old Walnut Trees Planted About iSjO. Near McMinnville. on the Yamhill River SO free are the Oregon trees of such enemies that little thoughtor attention has been given to this phase of the subject. In a fewlocalities where caterpillars have attacked the foliage they havebeen quickly eradicated by an arsenic spray. Fumigating willkill insect life. A bacterial disease that has made its appearancein California has not been seen in this state. Winter spray of limeand sulphur will kill moss and lichens, which are about the onlyparasites that attempt to fasten on Oregon walnut trees. PislvWate orProduces WqImmT^. . ,r ^ il ... X:f^ ^ ■^t: ■-. n :■(^^ r7 GllV.\V\ OT .:■; Proc\ PoUen. FOLUiNIATOOM 46 JCCc U5,l^ WALNUT GROWING IN OREGON ^^^ POLLINATION Every fruit and nut grower should know the simple theorj^of pollination. When a tree apears thrift}^ but fails to produce,nine times in ten the trouble is with the pollination. The walnutis bi-sexual and self-fertile; the stam
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