The document discusses several major fungal diseases that affect wheat crops:
1. Rusts, caused by fungi of the genus Puccinia, including stem rust, leaf rust, and stripe rust. They produce spores that can spread rapidly under wet conditions.
2. Loose smut and kernel bunt, caused by fungi that infect wheat flowers and seeds, resulting in powdery black or dark masses where healthy kernels should be.
3. Powdery mildew, caused by Erysiphe graminis, which produces white powdery growth on wheat leaves, stems, and flowers that later turns black and dries out plants.
4. Foot rot, caused by Pythium fungi in the soil
This power-point provides general knowledge on the major wheat disease as
Common bunt of wheat
Fusarium head blight of wheat
Loose smut of wheat
Stagonospora nodorum blotch of wheat
Bacterial streak of wheat
Barley yellow dwarf virus of wheat
Leaf rust of wheat
Stem rust of wheat
Stripe rust of wheat
Powdery mildew of wheat
Septoria tritici blotch of wheat
Stagonospora nodorum blotch
Tan spot
Wheat soilborne mosaic
Wheat spindle streak mosaic
Wheat streak mosaic
Cephalosporium stripe
Common root rot
Fusarium root,
crown, and foot rots
Take-all of wheat
This power-point provides general knowledge on the major wheat disease as
Common bunt of wheat
Fusarium head blight of wheat
Loose smut of wheat
Stagonospora nodorum blotch of wheat
Bacterial streak of wheat
Barley yellow dwarf virus of wheat
Leaf rust of wheat
Stem rust of wheat
Stripe rust of wheat
Powdery mildew of wheat
Septoria tritici blotch of wheat
Stagonospora nodorum blotch
Tan spot
Wheat soilborne mosaic
Wheat spindle streak mosaic
Wheat streak mosaic
Cephalosporium stripe
Common root rot
Fusarium root,
crown, and foot rots
Take-all of wheat
The overall description of major diseases of Rice or Paddy crop is ellustrated in presentation. The students prepairing for Agriculture can feel helpful. Thank You!
Diseases of rose, Crown Gall Rot, Black Spot, Powdery mildew of Rose, Rust an...Muhammad Ammar
Diseases of rose:
Crown Gall Rot,
Black Spot,
Powdery mildew of Rose,
Rust and Anthracnose.
Besides rose diseases, environmental factors can effect your plants too, and they should be watched for an remedied when found. To keep most rose diseases under control, a commercial fungicide will take care of it. In other cases, proper pruning techniques and the maintenance of clean garden implements goes a long way in preventing such conditions from occurring in the first place.
I have found that only two sprays are needed to keep your plants healthy. The first is sulpher. This will work for most of the diseases. But not for black-spot: for this you need Capstan.
The overall description of major diseases of Rice or Paddy crop is ellustrated in presentation. The students prepairing for Agriculture can feel helpful. Thank You!
Diseases of rose, Crown Gall Rot, Black Spot, Powdery mildew of Rose, Rust an...Muhammad Ammar
Diseases of rose:
Crown Gall Rot,
Black Spot,
Powdery mildew of Rose,
Rust and Anthracnose.
Besides rose diseases, environmental factors can effect your plants too, and they should be watched for an remedied when found. To keep most rose diseases under control, a commercial fungicide will take care of it. In other cases, proper pruning techniques and the maintenance of clean garden implements goes a long way in preventing such conditions from occurring in the first place.
I have found that only two sprays are needed to keep your plants healthy. The first is sulpher. This will work for most of the diseases. But not for black-spot: for this you need Capstan.
The most troublesome pests of paddy along with their control measures
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DISEASES OF BAJRA:
Bajra, the pearl millet (Pennisetum glaucum) is predominantly a rainfed, salt tolerant crop of rainy season.This ppt includes major disease like downy mildew, ergot, smut,rust and minor disease blast with symptoms,pathogen,disease cycle,favorable condition, management like cultural controland chemical control.
INTRODUCTION
OCCURENCE AND IMPORTANCE
DIFFERENT TYPES OF WHEAT RUST
BLACK RUST
BROWN RUST
YELLOW RUST
COMPARISION OF ALL THREE RUST
SYMPTOMS
SIGNIFICANCE
HISTORY
RUST CYCLE
STAGES OF PATHOGEN
EPIDEMIOLOGY
RUST CYCLE IN INDIA
UG99
2. UNIVERSITY OF AGRICULTURAL SCIENCES
PAT.301(2+1)
DISEASES OF FIELD CROPS AND
MANAGEMENT
TOPIC:FUNGAL DISEASES OF WHEAT
BY,
NAGENDRA
ALB2099
3. FUNGAL diseases of WHEAT
Major Fungal disease in wheat……….
1. RUSTS
A. Stem rust
B. Leaf rust
C. Stripe rust
2. LOOSE SMUT
3. KARNAL BUNT
4. POWDERY MILDEW
5. FOOT ROT
6. LEAF BLIGHT
4. Rusts
– Three forms rusts can affect wheat (all fungal
forms)
Stem rust
Leaf rust
Stripe rust
5. • BLACK or STEM RUST
Pathogen: Puccinia
graminis tritici
Uredospores are brown
and oval
Each cell of teleutospore
has one pore
Size is about 25-30x15-
20µm
6. • SYMPTOMS:
Reddish brown pustules
The large number of
uredosori burst, release
their spores
Infected parts bursting to
expose a mass of brown
uredospores
Brownish appearance even
from a distance
7. Favorable conditions
o Temperature: Between 23-25° C
o In this condition large number of teliospores are
produced.
Alternate hosts
Berberis,
Mahonia and
Mahoberberis
8. Leaf Rust (Brown or
Orange Rust)
Pathogen: Puccinia recondita
The pathogen is macrocyclic
rust.
Uredospores are brown and
spherical
16-28um in diameter
9. • SYMPTOMS:
The black telial pustules
are usually formed on the
dorsal side of leaves
The pustules burst early
with mild displacement of
the host epidermis
And deeply embedded into
the host.
10. Stripe Rust(yellow rust)
Caused by: Puccinia striiformis
Uredospores are spherical to
ovate in shape
Uredospores are orange
colored.
Size measuring from 23-35x20-
35µm
Teleutospores are dark brown
and flattened at the top when
in contact with the epidermis
11. Symptoms
appear early in the
spring.
Rust pustules are
yellow.
Spores are blown in
from warmer areas.
Disease
development is most
rapid under cool, wet
weather.
14. Loose smut of Wheat
Pathogen: Ustilago tritici(=U.
nuda tritici)
The teliospores are single
celled and formed irregularly
from fertile hyphae.
Teliospores are olivaceous
brown, spherical to oval
Measures 5-9µm in diameter
15. SYMPTOMS:
Can only be seen at the time
of flowering though the plants
are infected right after seed
germination.
Ears of infected one emerge
early than healthy one.
and transformed into black
powdery mass
Whole ear is covered by
delicate silvery membrane.
Resulting in formation of very
dark olive brown powdery mass
16. • Kernel bunt
• Pathogen: Neovassia indica
Spores are smooth walled
Measuring 22-49µm in
diameter
Requires long rusting period
The primary sporadia are
needle shaped and flexible
The secondary sporadia are
sickle shaped
17. • SYMPTOMS:
Plants ripen early than the
healthy one
Ears are dark green
The glues are pushed apart
by the spore balls which
are formed instead of
kernels
18. • POWDERY MILDEW
• Pathogen: Erysiphe graminis
var. tritici
• The conidia are elliptical,
hyaline, single celled, thin
walled and produced in
chains
• Fungus produce septate,
superficial, hyaline mycelium
on leaf surface with short
conidiophores
19. • SYMPTOMS:
Greyish white powdery
growth appears on leaf,
sheath, stem and floral
parts
Powdery growth later
become black lesion and
Drying of leaves and
Other parts
20. Fungus remains infected in plant debris as dormant
mycelium
Favorable temperature is 20-21°C and High RH
21. • FOOT ROT
Pathogen: Pythium
graminicolum and P.
arrhenomanes
This fungus produces
sporangia, zoospores and
oospores.
22. • SYMPTOMS:
The disease mainly occurs
in seedlings
Roots and rootlets become
brown in color
Seedlings becomes pale
green and have stunted
growth
Wet weather and high
rainfall is favorable