As a lead presenter delivered lecture on Status of papaya diseases in India during 2018-19 during 7th Group meeting of ICAR-AICRP(Fruits) at PAU, Ludhiana, India

1. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
New and emerging
disease(s) of
Papaya

2. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD

3. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Name of centre Associated Scientist
Anantarajupet
(Dr YSRHU)
Dr B. Nagalakshmi
Coimbatore
(TNAU)
Dr Manoranjitham
Gandevi
(NAU)
Mr B.M. Naik
Pusa
(Dr RPCAU)
Dr SK Singh

4. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD

5. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Name of centre Area surveyed
Anantarajupet
(Dr YSRHU)
Different places of Kadapa
district
Coimbatore (TNAU) Coimbatore, Erode, Dindigul and
Tirupur
Gandevi (NAU) Narmada ,Surat and Bharuch
Pusa (RAU) Samastipur, Muzaffarpur,
Vaishali, Siwan, Saran, Katihar

6. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD

7. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
An intensive survey was
conducted at different
locations by different centres
to record papaya disease(s)
during 2018-19.At least 40
plants/orchard were
observed.
Methodology

8. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Set of questions Answer
Anantarajupet
Coimbatore
Gandevi
Pusa
Q.N.1. What are the
emerging diseases
observed and also the
status of existing
major diseases?
No emerging disease observed.
Status of existing major diseases of papaya is
mentioned in next slides.
Q.N.2. Is there any
disease (s) which is
minor became major?
No minor disease has assumed the major
status across the centre.
Question addressed by various centre

9. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Set of questions Answer
Anantarajupet Coimbatore Gandevi Pusa
Q.N.3. Are the new
diseases observed
/confined to a limited
area or present
throughout the state?
Papaya leaf curl
virus present
throughout state
with 1-20%
incidence
Crown rot
(5%) and
Black leaf
spot (2-5
PDI) disease
were
observed first
time.
Cercospora
leaf spot
disease was
observed
with 10-26
PDI.
No Root rot of
papaya
present
throughout
state and still
created havoc
among
papaya
growers of
Bihar.
Question addressed by various centre

10. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Set of
questions
Answer
Anantarajupet Coimbatore Gandevi Pusa
Q.N.4. What is
the seasonal
variability in
disease
incidence?
Under dry
conditions
aphid activity
was more
and rate of
PRSV
development
was also
more.
High
temperature
favoured
developmen
t of PRSV .
No
seasonal
variability
observed.
October planted
papaya plants
were exposed to
PRSV disease for
shorter duration
as compared to
July planted crops
which was
exposed to PRSV
disease for much
longer duration,
so resulted in
quite less
marketable fruit
yield.
Question addressed by various centre

11. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Set of
questions
Answer
Anantarajupet Coimbatore Gandevi Pusa
Q.N.5. Give
the specific
period of
maximum
disease
infection in
case of
major
disease (s)
prevalence
in papaya
PRSV
incidence
was found to
be
increasing
with age.
PRSV-
March to
June
Leaf spot -
July -
September
Maximum
PRSV
infection
observed
during
March to
May
Maximum
PRSV and
root rot
disease
appeared
in July to
October.
Question addressed by various centre

12. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD

13. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
0
10
20
30
40
50
60
70
80
90
100
2017-18 2018-19 2017-18 2018-19 2017-18 2018-19 2017-18 2018-19 2017-18 2018-19
Collar rot (%) Fruit rot(%) Powdery mildew (%) PSRV(%) Leaf curl(%)
10-15 5-15
10-15 0-15
2-5 1
100 45-100
10-20 1-20
Scenario of Papaya diseases at area surveyed by
Anantharajupet centre

14. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
0
10
20
30
40
50
60
70
80
90
2017-18 2018-19 2017-18 2018-19 2017-18 2018-19 2017-18 2018-19 2017-18 2018-19 2017-18 2018-19
Collar rot (%) Cercospora leaf spot
(%)
Crown rot Black leaf
spot(PDI)
PSRV (%) Leaf curl (%)
1 5
20-23
10-26
0
5
0
2-5
60-90 20-90
1
5-10
Scenario of Papaya diseases at area surveyed by
Coimbatore centre

15. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
0
10
20
30
40
50
60
70
80
90
100
2017-18 2018-19 2017-18 2018-19 2017-18 2018-19
Collar rot (%) Fruit rot(%) PSRV(%)
5-6 4-6
6-9 6-9
91-100
75-90
Scenario of Papaya diseases at area surveyed by
Gandevi centre

16. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
0
10
20
30
40
50
60
70
80
90
100
2017-18 2018-19 2017-18 2018-19 2017-18 2018-19 2017-18 2018-19 2017-18 2018-19
Collar rot (%) Fruit rot(%) Root rot (%) PSRV(%) Leaf curl(%)
2-5
2-8 2-10
10-15
20-85 30-85
80-100 70-100
0-1 1-2
Scenario of Papaya diseases at area
surveyed by Pusa centre

17. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD

18. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Papaya ring spot virus

19. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
National scenario of PRSV
84
86
88
90
92
94
96
98
100
Anantharajupet Coimbatore Gandevi Pusa
0-100
60-90
91-100 80-10045-100
20-90 75-90
70-100
PSRV incidence(%) 2017-18 PSRV incidence(%) 2018-19

20. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Leaf curl

21. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
National scenario of Leaf curl of papaya
0
2
4
6
8
10
12
14
16
18
20
Anantharajupet Coimbatore Pusa
10-20
0-1
0-1
1-20
5-10
1-2
Leaf curl incidence(%) 2017-18
Leaf curl incidence(%) 2018-19

22. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD

23. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Collar rot

24. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
National scenario of Collar rot
0
2
4
6
8
10
12
14
16
Anantharajupet Coimbatore Gandevi Pusa
10-15
0-1
5-6
2-5
5-15
0-5
4-6
2-8
Collar rot incidence(%) 2017-18 Collar rot incidence(%) 2018-19

25. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Fruit rot

26. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
National scenario of Fruit rot
0
2
4
6
8
10
12
14
16
Anantharajupet Gandevi Pusa
10-15
6-9
2-10
0-15
6-9
10-15
Fruit rot incidence(%) 2017-18
Fruit rot incidence(%) 2018-19

27. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Anantharajupet
2-5
0-1
Powdery mildew incidence(%) 2017-18 Powdery mildew incidence(%) 2018-19

28. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Cercospora leaf spot

29. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
21.5
22
22.5
23
23.5
24
24.5
25
25.5
26
Coimbatore
20-23
10-26
Cercospora leaf spot (PDI) 2017-18
Cercospora leaf spot (PDI) 2018-19
National scenario of Root rot

30. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Crown rot(%) Black leaf spot (PDI)
5
2-5
Scenario of Crown rot and Black spot disease of papaya
Coimbatore

31. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Typical symptom of Papaya root rot

32. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
0
10
20
30
40
50
60
70
80
90
Pusa
20-85 30-85
Root rot incidence(%) 2017-18 Root rot incidence(%) 2018-19
National scenario of Root rot

33. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Performance rating with respect to reporting
(score obtained)
Indicators
Max.scored
Anantarajupet
Coimbatore
Gandevi
Pusa
Methodology 15 15 15 15 15
Statistical tools used 15 15 15 15 15
Presentation of text as per guidelines 20 15 15 15 15
Presentation of table as per guidelines 15 10 10 10 10
Conclusion 20 20 20 20 20
Timely submission 15 15 15 15 15
Total 100 90 90 90 90

34. ICAR-AICRP on Fruits 16-19 January, 2020 PAU, Ludhiana 7th GD
Thanks