FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Nepal
,
September
2013
Anthracnose disease of chilli
Recognize the problem
Anthracnose is one of the most serious fungal diseases in chilli. The disease
causes both pre and post-harvest fruit decay. The disease is characterised by
the appearance of small black circular spots on the skin of the fruits that
spread in the direction of the long axis, thus becoming more or less elliptical.
As the infection progresses, the spots become either diffused and
black/greenish/dirty grey, or they are markedly delimited by a thick and sharp
black outline enclosing a lighter black or straw coloured area.
Background
Anthracnose usually develops under conditions of high humidity when rainfall
occurs after the fruits have started to ripen. The disease is more likely to
develop on mature fruits, although it can occur on immature fruits as well.
Management
•
Use healthy pathogen-free chilli seed or transplants/seedlings
•
Remove affected plants early to control the spread of the disease
•
Keep transplants clean by controlling weeds and solanaceous volunteers
in the vicinity of the transplant houses
•
Avoid having stagnated water in nursery beds and fields to avoid fungal
infection. The field should have good drainage and be free from infected
plant debris.
•
Use a seed treatment with carbendazim at the rate of 2 gram per kg of
seed
•
Use a foliar spray with copper-oxychloride, difenoconazole, and
carbendazim at the rate of 2 gram per litre of water.
•
The first foliar spray is given at the first pair of leaf stage and
subsequent sprays should be done twice at 20-day intervals
Scientific name(s)
>
Colletotrichum spp.
The recommendations in this factsheet are relevant to
:
Nepal
Authors
:
Sudhir Poudel
DADO
tel:
977-9841373693
email:
poudel_sudhir@yahoo.com
Edited by
Plantwise
Plantwise is a global initiative led by CABI
NP013En
Lose Less, Feed More
Infected fruit
(Photo by Yuan-Min
Shen, Taichung District Agricultural
Research and Extension Station,
Bugwood (CC BY NC) )
When using a pesticide, always wear protective clothing and follow the instructions on the product label, such
as dosage, timing of application, and pre-harvest interval.
