Chilli leaf curl disease, caused by the chilli leaf curl virus and transmitted by whiteflies, results in symptoms such as leaf curling, size reduction, and stunted plant growth. Preventive measures include sourcing disease-free seeds, growing border crops, and controlling vectors, while curative treatments involve the use of tobacco decoction, neem seed kernel extract, and imidacloprid. The virus affects both annual and perennial plants, with its prevalence first reported in India in 2006.

2. Prepared by : Jay khaniya
Roll no. : 17
Reg. no. : 3010613020
Guided by :
Dr. Amol Deshmukh

3. Causal organism : Chilli leaf curl
virus (Begomo virus )sub group:
Bigeminivirus
Vectors(Transmitted by) :
Whitefly (Bemicia tabaci) & also
transmitted by mechanical
methods such as a Grafting.
Host range : Annual and
Perennial plants.

4. INTRODUCTION OF CHILLI LEAF CURL
DISEASE
 The leaf curl disease of chilli caused by chilli leaf curl
virus. Which is transmitted by viruliferous
/semipersitently by whitefly (Bemisia tabaci Genn.).
 In India, Senanayake et al. (2006) have reported first
time chilli leaf curl virus on chilli crop from Jodhpur
(Rajasthan).
 The virus consists of geminate
isometric particles measuring
18 to 20 nm in diameter.

5.  The symptom of the disease appears as
upward curling of the leaves followed by
reduction in their size which later turn
pale yellow in colour.
 The older leaves become leathery and
brittle.
 The affected plants become stunted.
 Fruits formation in susceptible cultivars
is rudimentary and distorted.

6. Upward curling of leaves

7. Small
sized
fruits
Clusters
of reduced
sized
leaves

8. On season
Off season
Warm weather suitable
for vector growth
SSI : Whitefly
(Bemicia tabaci),
Semi-persistence
PSI : Annual &
perennial
host of virus
Sowing
Upward lead curling,
Stunting of plant,
Deformed fruits

9.  PREVENTING MEASURES :-
 Obtain seed and seedlings from disease free
source.
 Grow border crops(Maize, sorghum, pearl millet,
etc.).
 Encourage natural enemies by growing mixed
cropping.
 Control the vector by growing the seedlings under
net to prevent the whiteflies attack on the
seedlings.
 Use of Yellow sticky strip for the control of vector.
 Treat the seedlings with RAW COW MILK 15% for
20min and transplant.

10. ON-FARM LCD MANAGEMENT IN CHILLI
Treatment
Farmer’s Practice

11.  CURATIVE MEASURES :-
 Spray 1% tobacco decoction or 5% vitex
decoction.
 Apply Neem Seed Kernel Extract(NSKE) @ 5%
found most effective.
 Apply Imidacloprid 17.8 SL (0.003%) was
most effective
Chilli root dip
treatment with
RCM