This document discusses three mango diseases: Anthracnose, Powdery mildew, and Algal leaf spot. Anthracnose affects various above ground parts of mango plants and fruits, and can be managed through removal of diseased parts, fungicide sprays, and post-harvest treatments. Powdery mildew causes a white powdery growth on inflorescence, leaves and young fruits, and can be controlled with three fungicide sprays. Algal leaf spot appears as rusty red spots on leaves and twigs caused by an algae, and can be reduced by balanced nutrition and two copper sprays.

2. Mango Diseases
A
Lecture To ToT trainees ( FFS)
By
Mr. Allah Dad Khan
Provincial Coordinator IPM KPK
MINFAL Pakistan

4. Anthracnose

 The disease is incited by Colletotrichum
gloeosporioides Penz. ( Glomerella cingulata (Stons.)
Spauld & Schrenk).It affects all the above ground parts
of the plant particularly leaves, petioles, twigs,
blossoms and fruits. It is one of the important post-
harvest diseases of mango. Disease may be reduced by
removal of diseased parts from the tree and its
destruction by burning. Infection on blossom could be
reduced effectively by 2 sprays of Carbendazim (0.1%)
at 15 day intervals. Its foliar infection can be managed
by 2 sprays of Copper oxychliride (0.3%), while latent
infection of the pathogen on fruits could be reduced
by pre-harvest sprays of Thiophanate methyl or
Carbendazim (0.1%). Post-harvest infection of this
pathogen can be managed by post-harvest dip of fruits
either with hot water alone (45 ± 20°C ) or hot water in
combination of fungicides, Thiophanate methyl or
Carbendazim (0.05%). Covering of fruits on tree, 15-
days prior to harvest with news or brown paper bags
and use of bio-control organism, Streptisporangium
pseudovulgare were also found effective in
management of its post-harvest phase

5. Anthracnose symptoms on
mango fruit
Anthracnose symptoms on
mango fruit

6. Anthracnose symptoms on
mango fruit
Anthracnose symptoms on
mango fruit

7. Anthracnose symptoms on
mango fruit
Anthracnose symptoms on
mango fruit

8. Anthracnose symptoms on
mango
Anthracnose symptoms on
mango

9. Anthracnose symptoms on mango
fruit
Anthracnose symptoms on
mango fruit
Anthracnose

10. Anthracnose symptoms on
mango fruit
Anthracnose symptoms on
mango

11.  The disease is caused by Oidium
mangiferae Berthet. The disease affects
inflorescence, leaves and young fruits.
The characteristic symptom of the
disease is the white superficial powdery
growth of the fungus comprising a large
number of conidia borne on
conidiophores. The disease can be
managed by pruning of diseased leaves
and malformed panicles and three sprays
of fungicides at different stages starting
with Wettable Sulphur (0.2%) at the
panicle size of 7.50 -10.00 cm followed by
Dinocap (0.1%) after 15-20 days of first
spray and Tridemorph (0.1%) after15-
20days of second spray. Wettable
Sulphur (0.2%) can be used in all the
three sprays and number of sprays may
be reduced as per appearance time of
disease.

14. Symptoms
 Angular, water-soaked
spots on leaves which
coalesce and turn black;
black cankerous lesions on
stems which crack and
exude a gummy substance;
irregular black lesions on
fruits which extend into
the flesh and exude gum;
fruits dropping from plant

16. Symptoms
 The disease is caused by an
algae, Cephaleuros virescens Kunze
and manifests itself in the form of
rusty red fructification of the alga
on the surface of leaves, petioles and
twigs. Initially the spots are greenish
grey and velvety in texture which
finally turn to reddish brown. After
shedding the spore the algal matrix
remains attached to leaf surface,
leaving a creamy white mark at the
original rust spot. The disease can
be reduced by supply of balanced
nutrients to the plants and two
sprays of Bordeaux mixture (1%) or
Copper oxychloride (0.3%) in the
month of July at 15 days interval.