chilli leaf curl
TRANSCRIPT
Pl. Patho.6.5Disease of
Horticultural Crops and their management
Prepared by : Jay khaniyaRoll no. : 17Reg. no. : 3010613020
CHILLI LEAF CURL DISEASE Guided by : Dr. Amol Deshmukh
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.
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.
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.
SYMPTOMS
Upward curling of leaves
Small sized fruits
Clusters of reduced sized leaves
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
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.
Management :-
ON-FARM LCD MANAGEMENT IN CHILLI
Treatment
Farmer’s Practice
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