Maize Diseases

MaizeDis - Maize/Corn diseases

Slide Number 1
Date 9/25/82
Site Ithaca, NY
Hosts maize
Disease Name corn smut
Scientific name of pathogen Ustilago zeae
Subject Hypertrophy symptoms, smut gall
Slide credit Thurston
Additional information Overgrowth

Slide Number 2
Date 8/11/72
Site Toluca, Mexico
Hosts maize
Disease Name corn smut
Scientific name of pathogen Ustilago zeae
Subject Corn smut galls (cuitalacoche)
for sale in Toluca market
Slide credit Thurston
Additional information food, traditional

Slide Number 3
Date
Site
Hosts maize
Disease Name corn smut
Scientific name of pathogen Ustilago zeae
Subject Canned corn smut galls
(cuitalacoche)
Slide credit Thurston
Additional information food, traditional

Slide Number 4
Date 8/9/62
Site Celaya, Mexico
Hosts maize
Disease Name maize head smut
Scientific name of pathogen Sporosorium relianum
(Sphacelotheca reliana)
Subject smut on tassel
Slide credit Thurston
Additional information

Slide Number 5
Date 8/9/62
Site Celaya, Mexico
Hosts maize
Disease Name maize head smut
Scientific name of pathogen Sporosorium relianum
(Sphacelotheca reliana)
Subject smut on ear
Slide credit Thurston
Additional information

Slide Number 6
Date 1/21/71
Site Nairobi, Kenya
Hosts maize
Disease Name maize streak
Scientific name of pathogen virus
Subject plant symptoms
Slide credit Thurston
Additional information

Slide Number 7
Date 12/5/73
Site Nairobi, Kenya
Hosts maize
Disease Name maize streak
Scientific name of pathogen virus
Subject plant symptoms
Slide credit Thurston
Additional information

Slide Number 8
Date 12/5/73
Site Nairobi, Kenya
Hosts maize
Disease Name maize streak
Scientific name of pathogen virus
Subject Foreground - natural infection
Background - plants treated with
Furadan to control Cicadulina
leafhoppers
Slide credit Thurston
Additional information

Slide Number 9
Date 12/6/63
Site San José, Costa Rica
Hosts maize
Disease Name corn stunt
Scientific name of pathogen virus
Subject Healthy and diseased plants.
Ernie Imle & Javier Cervantes
Slide credit Thurston
Additional information

Slide Number 10
Date 8/1/74
Site Tlaltizapan, Mexico
Hosts maize
Disease Name corn stunt
Scientific name of pathogen virus
Subject diseased & healthy plants
Slide credit Thurston
Additional information

Slide Number 11
Date 8/1/74
Site Tlaltizapan, Mexico
Hosts maize
Disease Name corn stunt
Scientific name of pathogen virus
Subject diseased & healthy plants
Slide credit Thurston
Additional information

Slide Number 12
Date 6/6/61
Site Maracay, Venezuela
Hosts maize
Disease Name corn stunt
Scientific name of pathogen virus
Subject diseased & healthy plants
Slide credit Thurston
Additional information

Slide Number 13
Date 2/27/68
Site Bangkok, Thailand
Hosts maize
Disease Name Northern corn leaf blight
Scientific name of pathogen Setosphaeria turcica
(Helminthosporium turcicum)
Subject Lesion on leaf
Slide credit Thurston
Additional information

Slide Number 14
Date 11/6/71
Site Farm Suwan, Thailand
Hosts maize
Disease Name Southern corn leaf blight
Scientific name of pathogen Cochliobolus heterostrophus (Helminthosporium maydis)
Subject Lesions on leaf
Slide credit Thurston
Additional information

Slide Number 15
Date 5/5/65
Site Pichilingue, Ecuador
Hosts maize
Disease Name Rust, common corn
Scientific name of pathogen Puccinia sorghi
Subject rust on plant
Slide credit Thurston
Additional information

Slide Number 16
Date 2/27/68
Site Thailand
Hosts maize
Disease Name Curvularia leaf spot
Scientific name of pathogen Curvularia clavata
Subject leaf spots
Slide credit Thurston
Additional information

Slide Number 17
Date 3/19/80
Site Quimiag, Ecuador
Hosts maize
Disease Name maize stalk rot
Scientific name of pathogen Erwinia chrysasnthemi pv. zeae
Subject plants killed by bacterium
Slide credit Thurston
Additional information

Slide Number 18
Date 10/29/64
Site Palmira, Colombia
Hosts maize
Disease Name maize stalk rot
Scientific name of pathogen Erwinia chrysasnthemi pv. zeae
Subject Corn hybrid infected by bacterium
Slide credit Thurston
Additional information

Slide Number 19
Date
Site Philippines
Hosts maize
Disease Name Philippine downy mildew
Scientific name of pathogen Peronosclerospora philippinensis
Subject Map of Philippines showing intensity
of Philippine downy mildew
Slide credit Charles Francis
Additional information

Slide Number 20
Date 1/23/68
Site Cotobato, Mindanao, Philippines
Hosts maize
Disease Name Philippine downy mildew
Scientific name of pathogen Peronosclerospora philippinensis
Subject Symptoms of downy mildew on plant
Slide credit Thurston
Additional information

Slide Number 21
Date 1/25/68
Site Musuan, Mindano, Philippines
Hosts maize
Disease Name Philippine downy mildew
Scientific name of pathogen Peronosclerospora philippinensis
Subject Symptoms of downy mildew on plant +
weeds
Slide credit Thurston
Additional information

Slide Number 22
Date 1/18/68
Site Los Baños, Philippines
Hosts maize
Disease Name Philippine downy mildew
Scientific name of pathogen Peronosclerospora philippinensis
Subject Sporulation of downy mildew on leaf
Slide credit Thurston
Additional information

Slide Number 23
Date 1/17/68
Site Los Baños, Philippines
Hosts maize
Disease Name Philippine downy mildew
Scientific name of pathogen Peronosclerospora philippinensis
Subject Natural infection by P. philippinensis
in field near IRRI
Slide credit Thurston
Additional information

Slide Number 24
Date 1/23/68
Site Cotobato, Mindanao, Philippines
Hosts maize
Disease Name Philippine downy mildew
Scientific name of pathogen Peronosclerospora philippinensis
Subject Natural infection by P. philippinensis
in farmer's field-Plaisted et al.
Slide credit Thurston
Additional information

Slide Number 25
Date 1/23/68
Site Cotobato, Mindanao, Philippines
Hosts maize
Disease Name Philippine downy mildew
Scientific name of pathogen Peronosclerospora philippinensis
Subject Natural infection by P. philippinensis
in farmer's field
Slide credit Thurston
Additional information

Slide Number 26
Date 1/25/68
Site Musuan, Mindanao, Philippines
Hosts maize
Disease Name Philippine downy mildew
Scientific name of pathogen Peronosclerospora philippinensis
Subject Natural infection by P. philippinensis
at Central Mindanao Univ. - note three
dates of planting - 90% infection in
youngest planting
Slide credit Thurston
Additional information date of planting

Slide Number 27
Date 1/25/68
Site Cotobato, Mindanao, Philippines
Hosts Saccharum spontaneum - wild sugar cane
Disease Name Philippine downy mildew
Scientific name of pathogen Peronosclerospora philippinensis
Subject Natural infection by P. philippinensis
Slide credit Thurston
Additional information weeds

Slide Number 28
Date 1/24/68
Site Cotobato, Mindanao, Philippines
Hosts Saccharum spontaneum - wild sugar cane
Disease Name Philippine downy mildew
Scientific name of pathogen Peronosclerospora philippinensis
Subject Natural infection along roadside by P. philippinensis
Slide credit Thurston
Additional information weeds

Slide Number 29
Date
Site Los Baños, Philippines
Hosts maize
Disease Name Philippine downy mildew
Scientific name of pathogen Peronosclerospora philippinensis
Subject Resistant lines in Int'l. Nursery
Slide credit Charles Francis
Additional information

Slide Number 30
Date 2/16/68
Site Tarlac, Philippines
Hosts Sugar cane
Disease Name Sugarcane downy mildew
Scientific name of pathogen Peronosclerospora sacchari
Subject Diseased plant
Slide credit Thurston
Additional information

Slide Number 31
Date
Site Indonesia
Hosts maize and rice
Disease Name
Scientific name of pathogen
Subject maize interplanted with rice - reduces
problems with downy mildew
Slide credit ?
Additional information intercropping, multiple cropping

Slide Number 32
Date 11/2/71
Site Farm Suwan, Thailand
Hosts
Disease Name
Scientific name of pathogen
Subject Farm Suwan buildings
Slide credit
Additional information

Slide Number 33
Date 11/2/71
Site Farm Suwan, Thailand
Hosts
Disease Name
Scientific name of pathogen
Subject Mr. Udom Pupipat
Slide credit Thurston
Additional information

Slide Number 34
Date 11/2/71
Site Farm Suwan, Thailand
Hosts maize
Disease Name Sorghum downy mildew
Scientific name of pathogen Peronosclerospora sorghi
Subject Natural infection by P. sorghi
Slide credit Thurston
Additional information

Slide Number 35
Date 11/2/71
Site Farm Suwan, Thailand
Hosts maize
Disease Name Sorghum downy mildew
Scientific name of pathogen Peronosclerospora sorghi
Subject Missing corn plants eliminated because
of P. sorghi infection - breeding for resistance
Slide credit Thurston
Additional information

Slide Number 36
Date 3/68
Site Tainan, Taiwan
Hosts maize
Disease Name
Scientific name of pathogen
Subject Corn Research Center
Slide credit Paul Sun
Additional information

Slide Number 37
Date 3/68
Site Tainan, Taiwan
Hosts maize
Disease Name Sorghum downy mildew
Scientific name of pathogen Peronosclerospora sorghi
Subject Stunting due to S. sorghi
Slide credit Paul Sun
Additional information

Slide Number 38
Date 3/68
Site Tainan, Taiwan
Hosts maize
Disease Name Sorghum downy mildew
Scientific name of pathogen Peronosclerospora sorghi
Subject Elongation of peduncle due
to S. sorghi
Slide credit Paul Sun
Additional information

Slide Number 39
Date 3/68
Site Tainan, Taiwan
Hosts maize
Disease Name Sorghum downy mildew
Scientific name of pathogen Peronosclerospora sorghi
Subject Multiple ears due
to S. sorghi
Slide credit Paul Sun
Additional information

Slide Number 40
Date 3/68
Site Tainan, Taiwan
Hosts maize
Disease Name Sorghum downy mildew
Scientific name of pathogen Peronosclerospora sorghi
Subject Plots for evaluation of S. sorghi
resistance interplanted with sugar cane
Slide credit Paul Sun
Additional information

Slide Number 41
Date 4/20/72
Site South Texas
Hosts maize
Disease Name Sorghum downy mildew
Scientific name of pathogen Peronosclerospora sorghi
Subject R. A. Fredericksen
Slide credit Thurston
Additional information

Slide Number 42
Date 6/7/73
Site Beeville, Texas
Hosts maize
Disease Name Sorghum downy mildew
Scientific name of pathogen Peronosclerospora sorghi
Subject multiple tasseling
Slide credit Thurston
Additional information

Slide Number 43
Date 6/7/73
Site Rio Bravo, Mexico
Hosts maize
Disease Name Sorghum downy mildew
Scientific name of pathogen Peronosclerospora sorghi
Subject Left- maize planted 2/73 - Trace of DM Rt - maize planted 4/73 - 80% DM
Slide credit Thurston
Additional information Far left H.D. Thurston

Slide Number 44
Date
Site
Hosts
Disease Name
Scientific name of pathogen
Subject Downy mildews on maize in USA
Slide credit R. A. Fredericksen
Additional information