Contents Introduction. Causal organism. Systemic position. Symptoms. Diagnostic characters of the casual organism. Control Strategies. Conclusion. References

1. Presentation on Anthracnose
of Jute
Course Code: AG 3206
Course Title: Principles of plant pathology
& disease field crops(P)
Presented by
Habibur Rahaman
Department of Agriculture
Noakhali Science and Technology University

2. Anthracnose of jute

3. Contents
Introduction.
Casual organism.
Systemic position.
Symptoms.
Diagonistic characters of the
casual organism.
Control Strategies.
Conclusion.
References.

4. Introduction
 On the two cultivated species of
jute(Corchorus olitorius),anthracnose
caused by Colletotrichum corchori.
 Anthracnose infects the
stems,leaves,tendrils & young shoots.
 Temperature & moisture are the key
components in influencing disease
development. Anthracnose can be very
damaging during heavy rainfall and hail.
 Active cell division round the seat of
infection by the pathogen appeared to be
the only factor responsible for checking the
spread of the fungus.

5.  Casual organism:
Colletotrichum corchori
 Systemic position:
Sub-division: Deuteromycotina
Class: Coelomycetes
Order: Melanconiales
Family: Melanconiacea
Genus: Colletotrichum
Species: Colletotrichum corchori

6. Symptoms
The irregular dark
to block to black
coloured sptos of
about 1cm in length
and a few mm in
width are present on
stem.
Several spots
coalesced together
and produced large
cankerous (necrotic
and sunken) lesions.

7. Symptoms
Cracks developer in the
centre of the lesions
and the fibrous are
exposed.
The fungus produces
acervuli in the spots
and the characteristics
bristles (seta) can be
seen on these acervuli
when observed by
hand lens.
It is a seed born

8. Diagonistic characters of the
casual organism
 Mycelium:
Mycelia are immersed hyaline at young
stage but pale brown to dark brown at maturity,
septate and branched.
 Acervulus:
Acervuli are epidermal or sub-epidermal
septate or confluent, composed of hyaline to
dark brown, thick or thin walled cells, bearing
conidiophores, setae and conidia.

10. Diagonistic characters of the
casual organism
 Seta:
Setae in acervuli are needle
like structures, black and
smooth, septate acutely pointed
at the apex.
 Conidiophores:
Conidiophores are short,
simple, aseptate, hyaline to
brown in color, smooth, cylindrical
developed from upper cell of
stroma in densely.
 Conidium:
Conidia are produced
abundantly, hyaline, aseptate,
falcate (sickle shaped) and

11. Control Strategies
 Anthracnose is economicaly important
because it can reduce fruit quality and
yield,as well as weaken the stem.
 Avoid submergence conditions,grow
capsularis types in such areas.
 Destroy diseased parts during dormant
season and it will reduce overwintering
inoculum.
 Proper air circulation
 Liquid lime sulfur spray can be effective.
 Spray the crop twice a week with 0.2%blitox
solution.

12. Conclusion
 Bangladesh provides over 90% of the
worlds raw jute fiber exports.So
Bangladesh exports a big amount of
jute products in world market.Due to
pathogen 39.4% yield can be loss.To
get rid of this loss proper control
strategies must be taken.

13. References:
 https://www.semanticscholar.org/paper/Colletotrich
um-species-associated-with-jute-L.)-in-Niu-
Gao/902eb45c83d95fdba3c543f537efff014c6a878
e
 http://agritech.tnau.ac.in/crop_protection/crop_prot
_disease_faqs.htm
 https://www.slideshare.net/tarangvekariya/jute-and-
tomato-seed-production-76627517