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Important Diseases and Decays of Trees Native to Washington

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Important Diseases and Decays of Trees Native to Washington Important diseases and decays of trees native to Washington EXTENSION BULLETIN 540 JULY 1960 AGRICULTURAL EXTENSION SERVICE INSTITUTE OF AGRICULTURA L SCIENCES WASHINGTON STATE UNIVERSITY, PULLMAN , WASHINGTON Important Diseases and Decays of Trees Native to Washington c. G. SHAW Professor of Plant Pathology Washington State University M. R. HARRIS Extension Plant Pathology Specialist Washington State University CONTENTS BUCKTHORN-Cascara INTRODUCTION --- -- ------------------- 1 Buckthorn ----------- ----- -- ------------ 7 Leaf Rusc-Puccinia coronata CONTROL METHODS FOR Leaf Spots-Marssonina rhamni, Phyl­ TREE DISEASES --------------------- - 2 losticta rhamnigena, Septoria blasda­ lei ALDER-Red Alder __ ___ ________ ____ ___ 3 Canker-Didymosphaeria oregonensis CEDAR-Alaska Yellow Cedar___ _ 7 Catkin Broom-Taphrina occidentalis Rust-Gymnosporangium nootkatensis Leaf Spots-Cylindrosporium alni, Sep- taria alnifolia Powdery Mildew-Microsphaera penicil­ CEDAR-Western Red Cedar ____ 8 lata, Phyllactinia guttata Brown Cubical Rot-Polyporus sulphur­ White Trunk Rot-Fomes igniaritts­ eus-See discussion on Western Hem­ See discussion on Birch. lock. Cedar Leaf Blight-Didymascella thu­ jina ASH-Oregon Ash -------------------- 4 Leaf Blight-Coryneum thujinum Leaf Spots-Cylindrosporium fraxini and Red Brown Butt Rot-Polyporus schwei­ Mycosphaerella spp. nitzii--See discussion on Douglas Fir. Powdery Mildew-Phyllactinia guttata­ Red Ring Rot-Fomes pini--See dis­ See discussion on Red Alder. cussion on Douglas Fir. White Mottled Rot-Fomes fraxinophil­ Shoestring Root Rot-Armillaria mellea us -See discussion on Douglas Fir. White Root Rot-Poria subacida - See ASPEN-Golden Aspen ______________ 5 discussion on Douglas Fir. Yell ow Ring Rot-Poria weirii Canker-Valsa nivea, V. sordida Ink Spot-Ciborinia seaveri Leaf Rust-Melampsora albertensis COTTONWOOD-Northern Leaf Spots-Marssonina populi and My­ Black Cottonwood --------- ------ --- 9 cosphaerella populorum-See also dis­ Leaf Blister-T aphrina populi-salicis cussion on Red Alder. Leaf Rust-Melampsora occidentalis - Shoot Blight and Scab--Venturia trem­ See discussion on Golden Aspen. ulae Powdery Mildew-Uncinula salicis-See White Trunk Rot-Fomes igniarius discussion on Red Alder. See also discussion on Birch. White Mottled Rot-Fomes applanatus White Trunk Rot-Fomes igniarius - See discussion on Birch. BIRCH-Western Paper Birch ____ 6 Brown Crumbly Rot-Stereum ostrea Brown Cubical Rot-Polyporus betulinus DOGWOOD-Pacific Dogwood ____ 9 Leaf Rust-Melampsoridium betulinum Canker-Nectria galligena Leaf Spot-Septoria betulicola Collar Rot-Phytophthora cactorum White Mottled Rot-Fomes applanatus Powdery Mildew-Phyllactinia guttata- -See discussion on Cottonwood. See discussion on Red Alder. White Mottled Rot-Fomes fomentarius Shoestring Root Rot-Armillaria mellea White Trunk Rot-Fomes igniarius -See discussion on Douglas Fir. iii FIR-Douglas Fir --- --- ---------- ------ 10 Brown Felt Blight - Herp otrichia nigra Aleurodiscus Canker- Aleurodisctts am­ - See discussion on Subalpine Fir. orphus-See discussion on Grand Fir. Brown Stringy Rot - Echinodontiztm Bacterial Gall- Agrobacterittm pseudo­ tinctorium-See discussion on West­ tsugae ern Hemlock. Brown Crumbly Rot-Fomes pinicola­ Brown Trunk Rot-Fomes officinalis - See discussion on Grand Fir. See discussion on Western Larch. Brown Cubical Pocket Rot-Trametes Needle Cast- Hypoderma robustum1 Hy­ se-rialis podermella abietis-concoloris Brown Cubical Rot - Polyportts m lph­ Needle Rusts-Nielampsora epitea1 Mel­ ttreus-See discussion on We s t e r n ampsorella caryophyllacearum1 Puccini­ Hemlock. astrttJn epilobii1 Pucciniastmm goep­ Brown Root and Butt Rot-Fomes an­ pertianum, Uredinopsis pteridis nasus- See discussion on Western Pitted Sap Rot-Polyporus abietimts - Hemlock. See discussion on Subalpine Fir. Brown Stringy Rot - Echinodontium Shoestring Root R ot-Armillaria mellea tinctorittm-See discussion on West­ - See discussion on Douglas Fir. ern Hemlock Sooty Mold- Dimerosporitmz abietis Brown Top Rot-Fomes rosem Brown Trunk Rot-Fomes officinalis­ FIR-Noble Fir __ ___ ______ ______ _____ ____16 See discussion on Western Larch. Dwarf Mistletoe-Arce1!thobittm dottg­ Fl R-Pacific Silver Fir ________________ 16 lasii Aleurodiscus Canker-Alettrodisctts am­ :Nfotded Bark Disease-Stereum sanguin­ orphzts-See discussion on Grand Fir. olentum Needle Cas t- Hypoderma 'robustum1 H'y­ Needle Cast-Rhabdocline psettdotsugae podermella abietis-concoloris, Lopho­ Needle Rusts- Melampsora albe-rtensis1 dermium spp. - See discussion on l\1elampsora occidentalis Grand Fir. Pitted Sap Rot-Polyportts abietintts - Needle Rusts-Melampsorella caryophyl­ See discussion on Subalpine Fir. lacearum, Pttcciniastrum epilobii, Pttc­ Red Brown Butt Rot-Polyportts sch· ciniastrum goepperianum1 Uredinopsis weinitzii pteridis-See discussion on Grand Fir. Red Ray Rot-Polyporus anceps-See Sooty Mold-Dimerosporium abietis discussion on Ponderosa Pine. See discussion on Grand Fir. Red Ring Rot-Fomes pini Red Root and Butt Rot-Polyporus tOJn­ FIR-Subalpine Fir ___ ___ ___ ______ _____ 16 entosus and var. circinatus Shoestring Root Rot-Armillaria mellea Aleurodiscus Canker-Aleurodisctts am­ White Mottled Rot-Fomes applanattts orphus-See discussion on Grand Fir. -See discussion on Cottonwood. Brown Crumbly Rot-Fomes pinicola­ White Pocket Rot - Fomes nig-rolimi­ See discussion on Grand Fir. tatus Brown Felt Blight-Herpotrichia nigra White Root Rot-Poria sttbacida Brown Stringy Rot - Echinodontium Yellow Ring Rot-Poria weirii tinctorium-See discussion on West­ ern Hemlock. Needle Rusts-Melampsora epitea1 Puc­ FIR-Grand Fir ___ ________ _______ ____ ____ 14 ciniastrum epilobii1 Pucciniastrum go­ eppertiamtm1 Uredinopsis longimuc­ Aleurodiscus Canker- Aleurodiscus am­ ronata, Melampsorella caryo phyllacear­ orphus ttm-Also see discussion of Needle Brown Crumbly Rot-Fomes pinicola Rusts on Grand Fir. iv Pitted Sap Rot-Polyporus abietinus Red Brown Butt Rot-Polyporus sch­ Red Ring Rot-Fomes pini---See discus­ weinitzii---See discussion on Douglas sion on Douglas Fir. Fir. Snow Blight-Phacidium infestans Red Ring Rot-Fomes pini-See discus­ sion on Douglas Fir. Shoestring Root Rot-Armillaria mellea HACKBERRY-Western -See discussion on Douglas Fir. Hackberry ------------------------------18 Spongy White Rot-Polyporus oregonen­ Powdery Mildew-Uncinula parvula - sis See discussion on Alder. White Mottled Rot-Fomes applanatus -See discussion on Cottonwood. White Pocket Rot-Fomes nigrolimitatus HEMLOCK-Mountain -See discussion on Douglas Fir. Hemlock ----------------~----- - --------- 18 White Root Rot-Poria subaciia-See Brown Crumbly Rot-Fomes pinicola­ discussion on Douglas Fir. See discussion on Grand Fir. Yellow Ring Rot-Poria weirii- See Brown Felt Blight-Herpotrichia nigra discussion on Western Red Cedar. -See discussion on Subalpine Fir. Dwarf Mistletoe-Arceuthobium campy­ lopodum f. tsugensis- See discussion JUNIPER-Rocky Mountain on Ponderosa Pine. Juniper ----------------------------------20 Pitted Sap Rot-Polyporus abietinus - Rust Galls-Gymnosporangiurri spp. See discussion on Subalpine Fir. Spongy White Rot-Polyporus oregonen­ sis-See discussion on Western Hem­ LARCH-Alpine Larch ______________ 20 lock. HEMLOCK-Western LARCH-Western Larch _________ ___ 21 Hemlock --------------------------------18 Brown Crumbly Rot-Fomes pinicola­ Brown Crumbly Rot-Fomes pinicola­ See discussion on Grand Fir. See discussion on Grand Fir. Brown Cubical Pocket Rot-T rametes Brown Cubical Pocket Rot- T rametes serialis- See discussion on· Douglas serialis-See discussion on Douglas Fir. Fir. Brown Cubical Rot-Polyporus sulphur­ Brown Cubical Rot- Polyporus sulph­ eus-See discussion on Western Hem­ ureus lock. Brown Root and Butt Rot-Fomes an­ Brown Trunk Rot-Fomes officinalis nosus Dwarf Mistletoe- Arceuthobium cam­ Brown Stringy Rot - Echinodontium pylopodum f. laricis-See also discus­ tinctorium sion on Ponderosa Pine. Brown Trunk Rot-Fomes officinalis­ Needle and Shoot Blight-Hypodermella See discussion on Western Larch. laricis Dwarf Mistletoe - Arceuthobium cam­ Red Ring Rot-Fomes pini---See discus­ pylopodum f. tsugensis-See also dis­ sion on Douglas Fir. cussion on Ponderosa Pine. Sparassis Root Rot-Sparassis radicata­ Needle Rusts-Caeoma dubium, Urae­ See discussion on Engelmaqn .. Spruce. cium holwayi White Pocket Rot-Fomes nigrotimita­ Needle Spot-Dimerosporium tsugae tus-See discussion on Douglas Fir. Pitted Sap Rot-Polyporus abietinus­ White Root Rot-Poria subacida-See See discussion ·on Subalpine Fir. discussion on Douglas Fir. MADRONE-Pacific Madrone ____ 22 Needle Cast- Elytmderma deformans, Collar Rot-Phytophthora cacto·rum Hypodermella concolor, Hypodermella See discussion on Dogwood. montivaga, Lophodermium pinastri, Leaf Rust-Pttcciniastrum sparsum N aemacyclus niveus-See also the dis­ Leaf Spot-Mycosphaerella arbuticola cussion on Ponderosa Pine. Speckled Tar Spot-Rhytisma arbuti Pitted Sap Rot-Polyporus abietinus - See discussion on Subalpine Fir. Red Ray Rot-Polyporus anceps-See MAPLE-Big Leaf Maple ____ ______ 22 discussion on Ponderosa Pine. Red Ring Rot-Fomes pini-See discus­ Dotted Tar Spot-Rhytisma punctatum sion on Douglas Fir. Leaf Spot-Cercosporella aceris Twig Blight-Cenangium ferruginosum Leaf Spot-Septaria aceris Western Gall Rust-Cronartium hark­ Nectria Dieback-Nectria cinnabarina nessii-See discussion on Ponderosa Perennial Canker-Nectria galligena - Pine. See discussion on Dogwood. Shoestring Root Rot-Armillaria 1nellea -See discussion on Douglas Fir. PINE-Ponderosa
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