. Diseases of fruit and nut crops in the United States in 1921. Fruit Diseases and pests United States; Nuts Diseases and pests United States. 46 APFLd - Root-rot Ozonium root-rot caused by Ozonlum omnivorum Shear Oaonium i'-oot-rot was p-revalcnt on apples in the black, waxy lands of Texas, causing about 5/° loss ac- cording to J. J. Taubenhaus. Root-rot follov/ing fire blight on the roots was reported in considerable quantities from Maryland. Root-rot (cause un- known) wag, reported by Gardner from southern Ind- iana where it caused pre- mature death of trees and is a limiting factor on newl
. Diseases of fruit and nut crops in the United States in 1921. Fruit Diseases and pests United States; Nuts Diseases and pests United States. 46 APFLd - Root-rot Ozonium root-rot caused by Ozonlum omnivorum Shear Oaonium i'-oot-rot was p-revalcnt on apples in the black, waxy lands of Texas, causing about 5/° loss ac- cording to J. J. Taubenhaus. Root-rot follov/ing fire blight on the roots was reported in considerable quantities from Maryland. Root-rot (cause un- known) wag, reported by Gardner from southern Ind- iana where it caused pre- mature death of trees and is a limiting factor on newly cleared land. (See Fig. 9.) Gardner states that, "It occurs on many varieties in the sassafras soils of the region indicated on the map and is fovund on North- western Greening, Grimes, Black Twig, Indiana Ben Davis, Dutchess, and ; Jonathan spot (non-parasitic) According to collaborators' reports this trouble seems to have been much worse than usual in the states of Ohio, Indi^,na, Illinois, r/isconsin, and Oregon, In Ohio there was considerable of it in some sections of the northern half of the state. R. C. Thomas reported that it hastened the pre- mature marketing for the Jonathan crop in some sections and thusooccasioned various losses. In Indiana, Cullinan, Burknolder, and Gardner reported the disease as worse than usual, mostly on Jonathan, but noted also on Xing David and Hubbardston. Prom Illinois Anderson wrote that it was worse than usual and very important on Jonathan and .largely confined to that variety. The loss was not large on account of the small crop, of this spot developed in storage during the fall in V/isconsin, acoordiiig to Vaughan, and Coons report- ed the trouble common as usurl in Michigan. In Oregon it was somewhat im- portant in some orchards, causing challov.' discoloi'ed spots on the skin after storing. Severe trouble was only reported from tlie Umpqua t-nd Rogue River Valleys up to January 1, 1^322. Other states rc ; ort
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1922
