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Management of parawilt disease in cotton


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FACTSHEETS FOR FARMERS
www.plantwise.orgCreated in India, October 2013
Management of Parawilt Disease in Cotton
Recognize the problem
The incidence is particularly high in plants with a large canopy and heavy boll
load. Leaves of affected plants show wilt like drooping, become chlorotic and
turn bronze or red followed by drying. Premature dropping of leaves and
fruiting parts may occur. Leaves lose turgidity and become wilted due to
increased...

plantwise.org

Ladybirds to control aphids in cotton


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FACTSHEETS FOR FARMERS
www.plantwise.orgCreated in Zambia, July 2015
Ladybirds to control aphids in cotton
Recognize the problem
Cotton (Butonje in Tonga) is often attacked by aphids (njina in Tonga, inda in
Nyanja). The aphids are tiny greenish or blackish, soft insects that can have
wing or no wings. They are so small so that you can only just see them. They
often sit in groups on the underside of cotton leaves (= aphid colonies). There
they...

plantwise.org

Benefits of fertilizers in cotton production


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FACTSHEETS FOR FARMERS
www.plantwise.orgCreated in Zambia, July 2015
Benefits of fertilizers in cotton production
Recognize the problem
Cotton (Butonje in Tonga) is grown without fertilisers by some farmers. The
lack of fertiliser prevents the plant from reaching the full variety height. It may
have fewer branches and fewer or smaller bolls. Plants may show stunted
growth over large areas of the field.
Background
Many farmers are only producing...

plantwise.org

Timely cassava planting to minimize mealybugs


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FACTSHEETS FOR FARMERS
www.plantwise.orgCreated in Tanzania, December 2014
Timely cassava planting to minimize mealybugs
Recognize the problem
Cassava mealybugs are also called “Vidung’ata” in Swahili. They are tiny
insects, less than ½ cm in size. They are soft- bodied, wingless, and covered
by white wax and hairs. They appear like small white cotton masses on stems
and on the underside of leaves. Mealybugs distort terminal shoots, and curl...

plantwise.org

Neem to support control of late blight in potato


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FACTSHEETS FOR FARMERS
www.plantwise.orgCreated in Zambia, July 2014
Neem to support control of late blight in potato
Recognize the problem
Late blight is a fungus-like mould disease in potato that spreads fast in cool
and humid weather. Infected plants have necrotic areas on their leaves which
wilt, bend downwards, become weak and eventually die. Look for white cotton-
like surfaces on root necks after rains. Inside tubers, late blight causes...

plantwise.org

Reduce ratoon cotton to control cotton stainer


Management of fruit flies Bactrocera invadens and Ceratitis cosyra in mangoes using traps


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Malawi
,
August
2014
Management of fruit flies in mangoes using traps
Recognize the problem
Fruit flies damage mangoes by laying their eggs in the fruits, just under the
skin. After eggs hatch, the larvae feed on the flesh of the fruit, causing it to
turn mushy and eventually rot. The problem of fruit flies in a mango orchard
can be mitigated using fruit fly traps.
Background
A fruit...

plantwise.org

Neem against whiteflies in cotton


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Zambia
,
August
2013
Neem against whiteflies in cotton
Recognize the problem
Whiteflies are a major pest of cotton, and if not controlled can cause high yield
losses. Whiteflies are tiny sucking insects which disturb the growth of leaves
and cause them to curl. Whiteflies are difficult to control as they usually fly
away or hide under leaves when sprayed.
Background
Neem trees are...

plantwise.org

Warm water treatment of cassava mealybug


20147801347.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Zambia
,
August
2013
Warm water treatment of cassava mealybug
Recognize the problem
Cassava mealybug is a serious insect pest of cassava. This pest is woolly, oval,
whitish-pink and about 3-5 mm long. It feeds on the tip of plants which
reduces the growth of leaves and tubers. It can cause up to 50% loss of tubers
and 100% loss of leaves. This pest looks like white cotton wool and is...

plantwise.org

Boll rot of cotton


Cotton aphid


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Cotton jassid


Vegetable fruit fly


Cotton bollworm (tular guti poka)


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Bangladesh
,
August
2012
Cotton bollworm (tular guti poka)
Recognize the problem
The cotton bollworm is a caterpillar. It eats inside the cotton stem and boll. The top of
the cotton plant wilts and the leaves and boll fall. Sometimes the bollworm chews
round holes into the stem. If you split the stem open you will see the droppings of the
bollworms. The inside of the stem and boll...

plantwise.org

Protecting okra seeds from cotton stainer


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Sierra Leone
,
May
2012
Protecting okra seeds from cotton stainer
Recognize the problem
Adult cotton stainers have brown and black backs with two black spots. They
have red and white stripes on the body underneath. Young cotton strainers
have red and white stripes all over the body. These insects may feed for
several days on okra plants, leaving black spots on the dry pods....

plantwise.org

Dusky cotton bug


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Pakistan
,
December
2012
Dusky Cotton Bug
Recognize the problem
Though the bug sucks cell sap from leaves, flowers and growing soft tissues of
upper stem, the main damage is when they get crushed at the time of ginning,
thus staining the lint and decreasing the market value of the cotton. The bugs
suck the sap in groups from the immature seed which consequently do not
ripen and...

plantwise.org

Attract ants against white stem borer in coffee


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Tanzania
,
November
2012
Attract ants against white stem borer in coffee
Recognize the problem
African coffee white stem borers (CWB) are dark-grey and white-grey beetles
up to
3
cm long with long dark antennae. Adult beetles are difficult to find, but
can sometimes be seen on young leaves and green twigs.
The
2
to
3
cm long pencil-thick young, called larvae, are white-...

plantwise.org

Light traps to control the armyworm


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Peru
,
October
2012
Light traps to control the armyworm
Recognize the problem
The armyworm is a pest that damages the corn bud, reducing the yield.
Background
The armyworm is born from eggs laid by a medium-to-large moth. There are
male and female moths. They mate and the females lay egg masses. Around
300-1500
eggs are laid per female and new armyworms are born every week.
The...

plantwise.org

Management of citrus fruit fly


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Nepal
,
September
2012
Management of Citrus fruit fly
Recognize the problem
Fruit fly is one of the most serious pests of citrus. It causes the fruit to turn
yellow and drop early. The fly is as big as housefly. It is yellow in colour with
dark brown to black markings on the segment where the wings are attached.
Background
Mated females deposit eggs within the flesh of the fruit on a...

plantwise.org

Deficiency of magnesium in cotton plant


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
India
,
November
2012
Deficiency of Magnesium in Cotton Plant
Recognize the problem
Magnesium is an essential secondary nutrient making up 0.2-0.4% of dry
matter of cotton plants. It is necessary for normal plant growth and is a core
element in the chlorophyll molecules. In cotton plants, magnesium deficiency
appears first on the lower leaves in which green leaves turns purple in...

plantwise.org

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