Study
on diseases and insect-pests of
coffee in Nepal |
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Funding |
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Coordination |
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Location(s) |
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Nepal
State:
District:
Lat:
Long:
Syangja and Kabhre
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Duration |
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Size |
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small
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Abstract
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The
studies on insect pests and
diseases were carried out by
Entomology and Plant Pathology
Divisions, NARC, during 2003
September to 2004 August to
identify major insect pests and
diseases of coffee and their
infestation level in Syangja and
Kavrepalanchowk districts. Key
Informant Survey was done to
explore overall situation of
coffee cultivation of the
districts and focus group
discussion was done to explore
the problems of coffee
cultivation and its interrelated
issues. After the surveys and
discussions three field visits
were made in different locations
of each district covering low to
high altitude, small to big
farmers, various geographical
setting as well as all vulnerable
stages of coffee crop from insect
pests and diseases infestation
point of view.
Survey of 23 coffee orchards in
Syangja and 20 orchards in Kavre
was done to assess insect pests
and disease situation. Insect
pests and disease assessment was
done in selected orchards. Insect
and disease samples were taken
for identification.
Coffee was being cultivated
between 700 m asl to 1300 m asl
in fertile, loam to infertile
gravel mixed soil in both
districts. Average number of
coffee plants in an orchard (plantation)
ranged 100-400 in both districts
with highest number of 900 plants
in Kavre and 4000 plants in
Syangja. Major coffee plantation
land types were upland followed
by sloppy upland. The khet land (Low)
was found in exceptional cases.
The majority of coffee crop was
intervened in cropping patterns
such as maize-wheat/vegetable;
Fruit + fodder+ grasses+; Fodder
+ turmeric/ginger; Fodder +
fruits and Fodder + grasses +
legumes were reported.
Farmers did not consider shade
management as prerequisite for
coffee plantation. Majority of
the coffee was planted in the
shade provided by indigenous
fruits and fodder plants, which
were already existed in the
plantation sites. Sal, Katush,
Chilaune, Nivaro, Badhar, Bedulo,
Tote, Khaniya, Mayal and Kimbu
were the indigenous plants and
Suntala, Nibua, Amba, Kera, Mewa,
Rukh katahar, Naspati, Aaru, Anar
were fruit tree used as shade
tree along with Ipil-ipil, Rai
grass, Dadab as imported shade
plant in Syangja districts. In
some places Rahar was also used
for shade management. Likewise
Katush, Kimbu, Kutmiro, Khaniyo,
Chanp, Kadam, Phalat and
Rudrackcha were indigenous fodder
plants and Nibua, Amba, Kera,
Mewa, Aaru, Anar, Haluwabed,
Avocado were fruit plants along
with Dadab, Ipil-ipil were
imported plants and Rahar as
legumes were used as shade
management in Kavre district.
The common coffee varieties were
Bourbon, Pacamara, Caturra,
Yellow Caturra, and varieties of
selection series in both
districts. Catisic and Caturra
were two additional varieties
planted by farmers of Kavre
districts.
Farmer reported that stem borer,
white grub, scale insect,
termite, red stem borer were
major insects along with squirrel
and snail as non-insect pests on
coffee crop in both the districts.
Shooty mould, algal spot, leaf
spot, leaf blight, cracking of
bark were the common diseases
problems reported by the farmers
in both the districts. In
nursery, the major diseases
reported were leaf spot, damping
off in Syangja and leaf blight
and leaf spot in Kavre.
Farmers estimated crop losses 20%
and 30% in Kavre and Syangja
districts respectively. They
guessed that the diseases caused
more yield loss than insect in
both the districts.
The farmers of both districts did
not consider weed major problem.
However, Bill goat, Knot grall,
Cogon grass, Burmuda grass were
the major weeds of Kavre while
Cogon grass, Crab grass, Croftan
weed were the major weeds of
Syangja district. Hand weeding
was reported as common weed
management practice followed by
the farmers of both districts.
Farmers of both districts were
growing coffee organically. They
informed that they were using
plants such as garlic,
chinaberry, neem, siam weed,
stinging nettle, smart weed, mug
wart, prickly ash, malabar nut
tree, marry gold, tobacco plant
to prepare plant based organic
pesticides for managing insects
as well as diseases problem as a
local method.
The major institutions concerned
with coffee cultivation in both
districts were DCPA, CoPP
HELVETAS, DADO and local non-governmental
organizations. Involvement of
female farmer in coffee
cultivation. The decision making
process regarding the activities
of coffee cultivation was found
male dominated at both districts.
Male farmer alone did activities
such as training and pruning,
pesticide application and
marketing.
Based on symptoms and isolated
pathogens in the laboratory, the
important diseases identified and
conformed were Anthracnose (Collectotrichum
gloeosporioides Penz.),
Brown eye spot (Cercospora
coffeicola), Damping off (Rhizoctonia
solani), and Wilt disease (Fusarium
spp.). Minor diseases like sooty
mould and algal spots were also
identified. Anthracnose was the
most serious disease problem that
affected leaves, twigs and
berries of coffee. The fungus
manifested three different
disease conditions of coffee;
twig die back, stalk rot of
berries and leaves and brown
blight of leaves. All three
conditions were found in many
orchard visited. Brown-eye-spot
was observed in many nurseries,
particularly in poorly managed
nurseries and in many young
orchards. The same pathogen Cercospora
coffeicola causes berry
blotch. The disease was observed
in many orchards.
The major insect pests found were
adults, pupa, and larvae of white
stem borer and larvae of red stem
borer, green scale, mealy bugs
and aphids. Snail was also found
problematic in the surveyed area.
Other pest such as various types
of grasshopper, hopper, hairy
caterpillar, case worm and
tortoise beetles were also found
in the coffee orchard as minor
insect pests.
Two species of white stem borer
collected from the Karndanda
–13, Syangja were identified
as Chlorophorus annulatus
and Xylotrechus smei from
the family Cerambicidae of order
Coleoptera. White stem borer was
not found at different locations
of Kavre districts visited. Two
species of grasshopper were
identified as Euparatettix
personatus from the family
Tetrigidae and Catantops
pinges pinges from family
Acrididae. Other specie
identified was tortoise beetle (cassida
sp.) from different locations of
Kavre districts.
It was observed that majority of
the coffee plantations were
poorly managed. Some management
practices have been suggested to
reduce insect pests and diseases.
Cultural and biological control
measures have been emphasized to
suite the organic coffee growing
policy. Some research topics have
also been suggested.
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Project
Experts |
Dhakal,
Dol P |
Khadge,
BR |
Giri,
YP |
Aryal,
Sunil |
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