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PLANT DISEASES REPORTED ON GUAM - 1989
George C. Wall ~s
Plant Pathology Laboratory College of Agriculture & Life Sciences
, university of Guam Mangilao. GU 96923
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Table from 1987 AES Annual Report
Determination of plant diseases on Guam
Reports of new diseases: 25 86 samples processed. New disease reports: Watermelon Fruit Blotch- Pseudomonas pseudoalcaligenes subsp. cin111i Papaya rot - Fusarium sp. Cassava blight- Xanthomonas campestris pv manihotis Cabbage Black rot - X. campestris Cabbage Leaf scald - X. campestris strain Ascochyta leaf spot on Bittermelon - Ascochyta sp. Bermuda grass root rot- Rhizoctonia sp. Rye grass root rot- Rhizoctonia sp Rye grass leaf spot - Helminthosporium rurcicum Fruit rot on pepper- Ulocladium sp. Maize Dwarf Mosaic on maize - MDMV Cercospora leaf spot on maize - Cercospora zeae-maydis Stem rot on bell pepper- Macrophoma sp. Powdery mildew on False Verbena- Oidium sp. Galls on branches of Lansium domesticum - Aphelenchoides sp. Leaf spot on Mango -Alternaria sp. Fig rust - Cerotelium fici Leaf spot on Taro - Phy11osticta sp. Leaf spot on Taro - Curvularia sp. Citrus canker- X. campestris pv citri Root-knot on b~Il pepper- Meloidogyne sp. Potato black scurf- Rhizoctonia sp. Diplodia rot on Annona - Botryodiplodia theobromae Ashy stem blight on Phaseolus - Macrophomina p_haseolina Common blight on Phaseolus - Pseudomonas phaseolicola
Two surveys were carries out. One was on tinang-aha disease of coconuts, to assay trees with PAGE analysis and compare these to cadang-cadang disease in the Philippine Islands; two scientists from the Philippine Coconut Authority were present to direct the study. Results showed that the two causal agents are similar, but different.
The other survey was for incidence of cassava blight on Guam. The disease was found in several locations, in planted and wild cassava plants.
1
) 2 Table from 1988 AES Annual Report
Table 1. New reports of plant diseases on Guam.
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Patho~en ll.2s1 Disease Location Agrobacterium tumefaciens Rose Crown Gall Yona
Aphe/enchoides sp (?) Lansiwn Stem galls Sinajana ) domesticum
Ascochyta sp Biucrmelon Leaf spot Darrigada
B otryodiplodia Annona Diplodia rot Barrigada
) theobromae squamosa
Capnodium (citri) Citrus Sooty mold lnarajan
Clssythafiliformis Citrus Dodder Mangilao
)
~sc:.uJ4 c..aWJf.llsr;..;s Ct~J:r,tAa 4: :nis False verbena Dodder Inarajan
Cercospora Jponwea (ipomeae) triloba Leaf spot lnarajan
Cercospora sp Yd long bean Leaf spot Inarajan
) Cercospora Cucumis melo Leaf spot Barrigada (citrul/ina)
Col/etotrichum g~ocosporioides Papaya Fruit rot Inarajan
) Cucumber Mosaic Virus Tomato Distortion Yigo
Cucumber Mosaic Virus Banana Mosaic Mangilao
) Curvularia sp Taro Leaf spot Inarajan
Diaporthe citri Citrus Melanose Barrigada
Envinia (carotovora) Watermelon Soft rot Dandan )
Erwinia (carotovora) Broccoli Soft rot Inarajan
Envinia (carotovora) Tomato Soft rot Talofofo
Fusariumsp Papaya Fruit rot Inarajan )
Fusariumsp Watermelon Wilt Barrigada
)
) 3
) Pathogen Host Disease Location
Glomerella cingulata Bell pepper Anthracnose Pago Bay
Gloeosporium sp Davillia sp Tip blight Mangilao
) Macrophoma sp Bell pepper Stem rot Barrigada
Macrophomina phaseolina KWBean Ashy stem blight Inarajan
) Meloidogyne sp Banana Root knot Yona
Mc/oidogyne sp Bell pepper Root knot Mangilao
Meloidogyne sp Tomato Root knot Yigo . ~
) Meloidogyne sp Yd long bean Root knot Inarajan
Mosaic Virus Wild bittermelon Mosaic Pili
Mycosphaerella
) (fijiensis) Banana Black leaf streak Merizo
Oidium sp False verbena Powdery mildew Barrigada
Phomopsis citri Calamansi Scab Inarajan
) Plwmnpsis citri Lemon Scab Inarajan
Phy/losticta sp Banana Freckle Inarajan
Phytllosticta sp Taro Leaf spot Inarajan
) Phytophthora sp Mango Root rot, Gummosis Yona
P hytophthora Fruit rot, ( citrophthora) Tangerine Gummosis I pan
) Pseudomonas (solanacearum) False verbena Bacterial wilt Mangilao
Pseudomonas pseudoalcaligenes subsp. citmlli Watermelon Fruit Blotch Dandan
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l'ythium ( aplwnidermawm) Cucumber Cottony leak Mcrizo
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) 4
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Pathogen Host Disease Location Rhizoctonia (.so/ani) Tomato Fruit rot Yona
) Rhizoctonia sp Bermuda grass Dollar spot Dcdedo
Rhizoctonia sp Melon Root rot lnarajan
Rhizoctonia (.so/ani) Potato Black scurf Yigo
) Rhizoctonia sp Yarn Root rot lnarajan
'J'riclwderma sp Betel nut Fruit spot Santa Rita
Uloc/adium sp Bell pepper Fruit spot Barrigada
) Woody Gall Virus Mango Woody gall Mangilao
X anthomonas ( 15' r otli ca\:9.~) CtliiiJICSiris
pv manihot is Cassava Bacterial blight lnarajan
) Xamhomonas ( campestris) Cabbage Leaf scald Yigo
X antlromonas campestris
) pv citri Citrus (lemon) Canker Mangilao
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From Russo et al., 1985.* 5 )
Table 1. Occurrences of pests on hosts arranged alphabetically by host canron name.
Host Canmn Name Host Genus Host Species Pest Type Pest Genus Pest Species
) Acacia Acacia confusa fungus Cercospora acaciae-confusae
Allamanda Allamanda cathartica fungus Colletotrichun gloeosporioides
Anatto Tree Bixa orellana fungus Phyllosticta bixinia
) Aralia Aralia cordata fungus Cercospora araliae
fungus c. barringtonia
fungus Phyllostictinia sp
) Polyscias fruticosa fungus Phyllosticta araliae
fungus Septoria sp
Avocado Persea americana fungus Glanerella cingulata
) fungus Phaoopsis sp
fungus Sphacelana perseae
Banana M.tsa · paradisica fungus Colletotrichum nusae
) fungus Fusariun oxysporun-nusae
fungus Mycosphaerella rrusicola
fungus Ph ana sp ) M.tsa 1 fungus ~ightoniella sp sp
fungus Gloeosporium rrusarun
fungus Nigrospora sp )
virus lVbsaic
Beach lVbrning Ipaooea pes-caprae fungus Albugo iporooeae Glory
fungus Cercospora iporooeae )
fungus Meliola mslacotricha
Beggerstick Bidens picosatica fungus Entylana guaranticun
Bell Pepper Capsicun anmn.m bacteriun Pseudaoonas solanacearun )
bacteriun Xantharonas sp
)
)
6
Table 1. ,(Continued)
Host Camxm Name Host Genus Host Species Pest Type Pest Genus Pest Species )
Bell Pepper Capsicum annuun fungus Astanella sp
fungus Cephalosporiun sp
) fungus Colletotrichun acutatun
fungus C.Lf'(4S pot-A.~ capsici
fungus Olrvularia lunata
) fungus Diaporthe sp
fungus Drechslera sp
fungus Fqrsariun sp
) fungus Leptosphaerulin~ argentinensis
fungus Phyllosticta sp
fungus Rhizoctonia sol ani
) fungus Sclerotiun rolfsii
Betel Nut Areca catechu fungus Colletotrichum acutatum .
Bittennelon M:xrordica charantia fungus Cercospora ci trullina
) fungus Erysiphe cichoracearun
fungus Pythiun sp
Bone set E"JPatorium perfoliatum fungus Olrvularia sp ) fungus Pestalotia sp
Bouvardia Bouvardia spl fungus Pestalotia sp
Breadfruit Artocarpus al ti lis )
fungus Colletrotrichun sp
fungus Ihthiorella sp
carrnunis alga Cephaleuros virescens )
fungus Coletotrichum gloeosporioides
fungus Olrvularia sp
)
) 7
Table 1. (Continued)
H:>s t Cannon Name Host Genus lbst Species Pest Type Pest Germs Pest Species
) Bush Bean Phaseolus wlgaris fungus Asochyta phaseolon:m
fungus Botrytis sp
fungus Colletotrichun sp
) fungus Erysiphe sp
fungus Pythiun sp
- fungus Rhizoctonia sol ani
) fungus Trichodenna. sp
virus lVbsaic
.: "Calabasa Lagenaria siceraria fungus Erysiphe cichoracearun )
fungus lVbsaic
Caladium Caladium hi color fungus Leptosphaerulina australis
fungus Phyllachora colocasiae )
Canavalia Canavalia magalantha fungus Colletotrichum gloeosporioides
fungus Phyllosticta sp
Cantaloupe I Olcunis melo bacterium Pseudaronas lachrymans ) Pepino
fungus Erysiphe cichoracearun
fungus Fu.sariun sp
fungus Sclerotiun rolfsii )
virus lVbsaic .
Cassava Manihot esculent a fungus Cercospora henninosii
) fungus Fusariun sol ani
Cauliflower Bras sica oleracea var fungus Fusarium oxysporun botrytis
Cedar Juniperus italica fungus Pestalotia funerea )
<llain of love Antigonon leptopus fungus Colletotrichum sp
)
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8
Table 1. (Continued)
Host Canron Name Host Genus Host Species Pest Type Pest Gerrus Pest Species )
Chain of Love Ant igonon leptopus
Chinese cabbage Brassica chinensis
Chinese Ever- Aglaonema carnmutatum ) green
Chinese Parsley Coriandrum sativun )
Chrysanthamn
Citrus
)
Clerodendron )
) Coconut
)
Copper leaf
)
Coral Tree
)Corn
)
Olrysanthe- sp1
ll1LIIl
Citrus
Cleroden- inennie dron
Cleroden- sp1
dron
Cocos rrucifera
Acalypha indica
Erythrina
Zea mays
fungus Pestalotia
bacterium Pseudomonas
fungus Colletotrichum
fungus
fungus
fungus
fungus
alga
fungus
fungus
fungus
fungus
fungus
c. Glaneralla
Phythiun
Phytophthora
Cephaleuros
Cercospora
Colletotrichum
Uredo
Cercospora
Colletotrichum
bacterium Bacillus
Lasiodiplodia
Pestalotia
sp
sp
dematium
gloeosporioides
cingulata
sp
sp
virescens
sp
sp
clerodendricola
volkameriaei
gloeosporioides
coli
theobranae
palmarun
fungus
fungus
fungus Pseudoepicoccum coccos
viroid
fungus
fungus
fungus
fungus
bacteria
. " at &'" nl:gz 7 1t\1t- t15A J A Cercospora
Colletotrichum
COlletotrichum
Ph ana
Exwinia
profusa
dematium
gloeosporioides
musae
dissolvens
) . 9
Table 1. (Q>nt irmed)
B:>st exnlnon Name Host Germs Host SJ2ecies Pest Type Pest Genus Pest Species
) Corn Zea mays fungus Puccini a polys .ora
fungus Puccini a sorghi
virus Streak
) Cowpea Vigna sinensis fungus Rhizoctonia sol ani
Crapemyrtle Lagerstro- indica fungus Capnodiun sp ani a
fungus Cercospora sp
) Crimm Crinum asiaticus fungus Mycosphaere 11 a sp
Croton Q>diaeum variegatun fungus Colletotrichun gloeosporioides
fungus Phyllosticta codiaei
) Crowfoot Grass Dactyloc- aegptium fungus Drechslera cynodontis teniun
~ Olcurber Olcunis sativus fungus Erysiphe cichoracearun
) fungus Gl oeospori urn sp
fungus Glanerella cingulata
) fungus Rhizoctonia sp
virus M:>saic
Cycad Cycas circinalis fungus Q>lletotrichun gloeosporioides
) fungus Pestalotia palmarun
· Cynanetra Cynanetra rami flora par. plt. Balanophora indica
Date Palm Phoenix dactyli fera fungus Phanophsis sp
) Dieffenbachia Dieffen- picta fungus Q>lletotrichtm circinans bachia
fungus c. gloeosporioides
fungus Mycosphaerella sp
) Dracaena Dracaena fragranus fungus Cercospora sp
>.
)
10
Table 1. (Chnt inued) -Host Qmoon Name Host Genus Host Species Pest Type Pest Genus Pest Species
) Eggplant Solanum melongena bacteriun Pseudaoonas solanacearun
fungus Colletotrichun sp
fungus Gloeosporhm sp )
fungus Ph ana sp
fungus Phampsis vexans
fungus Sclerotiun rol fsi i )
fungus Rhizoctonia sol ani
Elephant Grass Pennisetun polystacyon fungus Puccini a sp
)Eucalyptus Eucalyptus cinerea fungus Colletotrichun sp
fungus Pestalotia sp
fungus Rhizoctonia sp
)False Taro Alocasia macrorrhiza fungus Diplodia theobrana.e
fungus Mycosphaere 11 a alocasiae
Fern Phymatodes scolopendria fungus Colletotrichun sp
) f~s Phana sp
Fig Ficus carica fungus CeroteAiun fici
Fish Ki 11 Tree Barring- asia!ica fungus Cercospora barringtonia toni a
) fu.-,gus Mycosphaerella . sp
Flame Tree Delonix regia fungus Coriolus badius
Garden Pea Pi sun sativun fungus Colletotrichun 1 indenuthi anun
) fungus Phaeosphaeria sp
Giant Bean Entada pursaetha fungus Phyllachora sp
Ginger Zingiber officinale fungus Colletotrichun sp ) fungus Ph ana sp
Grass 1 1 fungus Ph ana sp
)
~ 11
Table 1. (Chnt irrued)
Host Canmn Name Host Gerrus Host Species Pest Type Pest Germs Pest Species
~ Grass 1 1 fungus Puccini a sp
Grass Dichanthium blahdii fungus Cerebella andropogoni s
fungus Physarun sp
~ fungus Puccini a sp
Gum Cherry Mmtingia calabura fungus Cercospora nuntingiae
;1.. Guam Daisy Bidens pilosa fungus Cercospora bidentis
"" fungus Chlletotrichum sp
fsi~ fungus ~ra,.yces bidenticara
)_ ... <llava Pisdium guajava alga Cephaleuros virescens
... fungus Chlletotrichum gloeosporioides
fungus Chrvularia sp
l fungus Glanerella cingulata
fungus Pestalotia sp
fungus Phyllosticta sp
) Cbinea Grass Panicum maxinun · fungus Cercospora fus imaco 1 ans
Half Flower Scaevola taccada fungus Capnodium sp
fungus Mycosphaerella scaevolae
) Head Cabbage Brassica oleracea bacterium Xanthcmmas carrpestris
fungus Alternaria brassicae
fungus Ph ana lingrun
) Honeydew Chcunis inodorus fungus Ery8ipho C l Chlll"l\\!UU l"\111
Hot Pepper Capsicum frutescens bacterh'Wll Xantharonas sp
fungus Cercospora capsici
) fungus Ch 11 etotri chum capsici
fungus c. gloeosporioides
)
) Table 1. (Continued) 12
Host Cannon Name Host Genus Host Species Pest Type Pest Genus Pest Species
Hot Pepper Capsicun frutescens fungus Drechslera sp
) fungus Microsporon sp
Jungus Pestalotia sp
fungus Rhizoctonia sp
) fungus Sclerotiun rolfsii
virus 1\bsaic
Iba Phyllanthus acidus fungus Phakopsora phyllanthi )
fungus Phaoopsis sp
Indian 1\brinda citrifolia fungus Phyllosticta roorindae M..tlberry
fungus Physalospora roorindae )
Ironwood Casuarina equiseti folia fungus Gan odenna australe
fungus Nectria haematococca
) Ixora Ixora chinensis fungus Mycosphaere 11 a sp
Jackfruit Artocarpus heterophylla fungus Rhizopus artocarpi
Jasminun Jasminun sarrbac fungus Mycosphaerella sp
) Tatropha Jatropha nul ti fida fungus Colletotrichun gloeosporioides
Jobs Tears Coix lachcyma-job! fungus Olrvularia sp
Johnson Grass Sorghun ~~~~ fungus Puccini a purpurea
) :amachi le Pithecell- dulce fungus Colletotrichun dematiun obiun
~Kong Iparoea aquatics fungus Albugo ipaooeae
) fungus Cercospora iparoeae
.eek Alliun per run fungus Colletotrichun circinans
fungus Phyllostictinia sp
) .e~ron Citrus 1 iroon alga Cephaleuros virescens
bacteriun Xantharonas citri
)
) ._
13 Table 1. (Continued)
Host Ccmron Name Host Genus Host Species Pest Type Pest Genus Pest Species )
Lettuce La.ctuca sativa bacteriun Pseudamnas sp
Lime Citrus aurantifolia bacteriun Pseudaoonas sp
bacteriun Xanthamnas citri )
fmgus Cercospora citri
fungus Diaporthe citri
) si~ ftmgUS Phytophthora sp
Vigna ~~ sesquipedalis Long Bean bacteriun Xanthamnas phaseoli
fungus Colletotrichtm dematiun
) fmgus Colletotrichtm sp
fmgus Diaporthe sp
fungus Erysiphe cichroaceartlll
) fmgus Fusariun sp
fmgus Gloeosporiun sp
fmgus Helminthosporiun vignae
) fmgus Leptosphaerulina australis
fmgus Nigrospora sp
fungus Pestalotia sp
) fmgus Pythiun sp
fungus mtizoctonia sol ani
fmgus Sclerotiun rol fsi i
) virus M>saic gJ. Civ\V Mango Mangifera indica 1\lga Cephaleuros virescens
fmgus Colletotrichun dematiun ) fungus c. gloeosporioides
fmgus Elsinoe mangiferae
)
) 14
Table 1. (Continued)
Host Canoon Name Host Gerrus Host Species Pest Type Pest Gerrus Pest Species )
Mango Mangifera indica fungus Glanerella cingulata
fungus Penici 11 iun sp
fungus Pestalotia mangiferae )
fungus Phana sp
fungus Pharopsis sp
) virus M:>saic
Manila Palm Veitchia merrilli fungus Mycena citricolor
fungus Phyllosticta sp
) Masicsic Chramolaena odorata fungus Colletotrichun danatiun
fungus Pharopsis sp
fungus S~ptoria sp
) lVbses in a Rheo discolor fungus Colletotrichum dematiun Basket
fungus c. gloeosporioides
fungus Olrvularia sp
) fungus Pestalotia sp
Norfolk Island Araucaria excel sa fungus Pestalotia funerea Pine
Chi on Alliun cepa fungus Colletotrichtm circinans )
Orchid Aranthera spl fungus Fusariun sp
Cattleya spl fungus Phyllosticta sp
Dendrobiun 1 fungus Colletotrichtm ) sp sp
fungus P11Yllosticta ni granacu/J).,#t $
fungus P. pyrifonnis
) Vanda spl bacteriun Ezwinia carotovora
fungus Fusariun sol ani
Orchid Tree Bauhinia variegata fungus Colletotrichum sp
)
) 15
Table 1. (Continued)
Host Ccmoon Name Host Genus Host Species Pest Type Pest Gerros Pest Species )
Panicun Panicum purpurescens fungus Puccini a sp
Papaya Carica papaya fungus Cercospora sp
fungus Colletotrichun sp )
c ·ass~ola fungus Corynespora
fungus Helminthosporium papayae
)
virus Ringspot
Para Grass Calophyllun inophyllum fungus Coccanyces sp
,Paspalun Paspalun finbriatun fungus Olrvularia senegi a ens is )
fungus Drechslera victoriae
Passion Fruit Passi flora foetida fungus Cercospora fuscovirens
) Peanut Arachis hypogaea fungus Cercospora arachidicola
fungus Fusariun sp
fungus Puccini a arachidis
) Physicnut Jatropha cur cas fungus Colletotrichum gloeosporioides
Pineapple Ananas carosus fungus Olalara vexans
fungus FUsarium sp
) fungus Phytophthora sp
Pink Tabebuia Tabebuia pentaphylla fungus Colletotrichun dematiun
fungus c. gloeosporioides
) fungus Pharopsis sp
fungus Phyllosticta sp
Plumeria Pluneria rubra fungus Colletotrichum gloeosporioides
) Poinsettia Poinsettia pulcherrimn fungus Phytophthora sp
Potato Solanum tuberosum fungus FUsarium sp
)
) 16
Table 1. (Continued) I
Host Camxm Name Host Gerrus Host Species Pest Type Pest Genus Pest Species
) Potato Solanum tuberosun fungus Penici lliun sp
fungus Phyllosticta sp
fungus Sclerotiun rolfsii
) fungus Streptanyces scabies
Pwpkin Ulrcubi ta pepo fungus Erysiphe cichoracearun
virus lVbsaic
)Radish Raphanus sativus fungus Streptanyces scabies
Raphidophora Raphidop- aurea fungus Colletotrichun gloeosporioides phora
fungus Lasiodiplodia theobranae
)Rose Rosa spl fungus Diplocarpon rosae
fungus Leptosphaeria coniothyriun
fungus Peronospora spars a )
fungus Pestalotia sp
Rubber Tree Ficus elastica fungus Colletotrichun gloeosporioides
Sarawak Bean llilichos hosei fungus Colletotrichun dematiun ) Scheffel era Scheffelera actinophylla fungus Mycosphaerella sp
fungus .1:11yllost icta sp
Sea Hibiscus Hibiscus ti liaceus )
fungus Phyllachora minuta
Seagrape Coccoloba uvifera alga Cephal euros virescens
fungus Pestalotia adusta
.,icklepod Cassia tor a fungus Colletotrichun gloeosporioides
fungus Phaoopsir. phaseoli
Hipper FlCMer Pedilanthus tithymaloides fungus Phaoopsis sp
~ursop Annona rruricata fungus Cephalosporiun sp
fungus Colletotrichun gloeosporiodes
)
) 17
Table 1. (Cbntinued)
Host Canoon Name Host Germs Host Species Pest Type Pest Germs Pest Species )
Sour sop Annona rruricata fungus Pestalotia sp
fungus Phaoopsis sp
Spider Lily Hymeno- .1 i ttoral is fungus Olrvularia leonensis ) call is
fungus Guignardia sp
fungus Stagonospora curtisi i
Spider Lily Pancratiun littorale fungus Sclerotiun rolfsii )
Stac/tarpheta ..S~c..1-;~rpJ.u.\A. Stach ra- urticaefolia fungus Oidiun sp ; pheta
Sugarcane Saccharun officinarun fungus Cercospora koepki . ) fungus Cblletotrichum falcatun
Stmner Squash Olrcubi ta melopepo virus 1\bsaic
Suni Taro Cblocasia esculent a fungus Macrophana sp )
fungus Phytophthora colocasiae
fungus Sclerotiun rolfsii
virus 1\bsaic )
Sunn H€111? Crotalaria juncea fungus Curvularia lunata
fungus Sclerotiun rolfsii
fungus S t €1ll?hy 1 i un sp
&\Teet Potato Ipanoea batatas fungus Rhizoctonia sol ani
virus 1\bsaic
&\Teet Sop Annona squaroosa fungus Glanerella cingulata )
Tangant angan Leucaena leucocephala fungus Erysiphe cichoracearun
fungus Honmdendron sp
) fungus Pestalotia sp
Tangerine Citrus nobi lis bacteriun Xantharonas citri
)
) 18
Table 1. (Continued) I
Host Cannon Naroo Host Genus Host SEecies Pest Type Pest Genus Pest Species
) Taro Xanthosana sagittaefolium virus lVbsaic
Ti Plant Cordy line terminalis fungus Ulrvularia lunata
fungus Phyllosticta cordylines
) Tanato Lycoper- esculentum bacterium Corynebacteri un mi chi ganense sicon
bacterium Pseudaoonas solanaceanm
bacterium Xanthaoonas vesicatoria
) fungus Alternaria sol ani
fungus Colletotrichum gloeosporioides
fungus Colletotrichun sp ) fungus Olrvularia sp
fungus Fusariun sp
fungus Gloeosporium sp )
fungus Sclerotina sclerotionm
fungus Sclerotium rolfsii
fungus Septoria lycopersici )
fungus S t elll>hy li um sp
virus lVbsaic
Triphasia Triphasia trifolia fungus Colletotrichun gloeosporioides {
fungus rolfsii 'lUbe rose Polianthes tuberosa Sclerotium
Wal~heria Waltheria indica fungus Cercospora melochiae
Watercress Nasturtiun officinale fungus Gloeosporiun sp )
Watennelon Ci trullus lanatus bacteriun Pseudaoonas S'"Olanaceanm
fungus Colletotrichun gloeosporioides
) fungus Erysiphe cichoraceartm
fungus Mycosphaerella citrulina
)
)
Table 1. (Chntinued)
Host Cbnmn Name Host Genus lbst Species Pest Type
) Watennelon Citrullus lanatus fungus
fungus
fungus
Pest Genus
Phyllosticta
Pythiun
Sclerotiun )
par. plt. Eragostis
)
)
Wedelia
Wild Piper
Yam
Yarrbean )
virus
Wedelia biflora fungus q_~~.~
Piper ~nse fungua
Dioscorea alata
Pachyrhi- erosus z us
fungus
fungus
fungus
fungus
fungus
Yellow Jew Tree Parkinsonia aculeata fungus
fungus
fungus
fungus
fungus
fungus
Zephyranthes )
Zinnia
Zucchini
Zephyran- rosea thes
Zinnia elegans
Zucchini moschata
virus
M>saic
Uredo
Ch lletotri chun
Cercospora
Cl adospori un
F\lsariun
Gop lana y
PhakoGora
Glanerella
Cercospora
Chlletotrichun
Phyllosticta
Sclerotium
Erysiphe
M>saic
19
Pest Species
sp
aphanidennatun
rolfsii
amablis
sp
denatiun
ubi
sp
sp
dioscoreae '(
paceythiza
cingulata
sp
capsici
amaryllidicola
rolfsii
cichoracearun
) ---------------------------------------------------------------------------------
)
)
1
*
Hbst genus, specieR, common name or varietal name not specified by reporter.
Russo, V., Beaver, G., Cruz, F., and Rubin, H. 1985. Plant pathogens and associated hosts on Guam. Technical Report, AES Publication No. 46.
