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Herbicides against weeds in maize


Prevent bean rust using fungicides


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FACTSHEETS FOR FARMERS
www.plantwise.orgCreated in Zambia, September 2016
Prevent bean rust using fungicides
Recognize the problem
Bean rust is a fungal disease of beans and other legumes. It can cause yield losses up to 30%.
It affects vegetative, flowering and fruiting stages of the bean plant. The disease symptoms are
yellow to yellowish-brown spots scattered over leaves. The symptoms are a little similar to those
of anthracnose of beans,...

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

Rice false smut


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FACTSHEETS FOR FARMERS
www.plantwise.orgCreated in Cambodia, November 2014 (Revised November 2016)
Rice False Smut
Recognize the problem
Outbreaks of false smut generally occur during periods of high humidity.
Normally only a few grains in a panicle are affected and the attack usually
takes place when the grains are mature. The fungus transforms individual rice
grains into large spherical balls containing spores. These spore balls are initially...

plantwise.org

Herbicides against weeds in soybeans


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FACTSHEETS FOR FARMERS
www.plantwise.orgCreated in Zambia, December 2014
Herbicides against weeds in soybeans
Recognize the problem
Weeds compete with soybean for light, space, water and nutrients. Soybean plants are
quickly overgrown. If weeds are not controlled on time, soybean yield will be very low.
Background
Most weeds can be controlled mechanically by pulling out, harrowing, or tillage. Some
serious weeds can be chemically controlled. Be...

plantwise.org

Prevention of false smut on rice


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FACTSHEETS FOR FARMERS
www.plantwise.orgCreated in Myanmar [Burma], June 2014
Prevention of False Smut on Rice
Recognize the problem
False smut causes yellowish to orange small balls to develop on the grains
which later turn black. The incidence of false smut is increasing more and more
among rice growers, especially among small seed productive farmers. This is
due to changing weather conditions and continuous rice cropping.
Background
False...

plantwise.org

Repelling fruit flies by weaver ants in oranges


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FACTSHEETS FOR FARMERS
www.plantwise.orgCreated in Tanzania, October 2014
Repelling fruit flies by weaver ants in oranges
Recognize the problem
Fruit flies lay eggs in mature orange fruits causing black dots and yellowing of
fruits. The flies are a bit smaller than house flies and much more colourful.
They have orange silvery patterns around the abdomen, and transparent wings
with dark patterns. The larvae hatch from eggs, feed inside fruits,...

plantwise.org

Management of leaf miner fly


Plant nutrient deficiencies


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Trinidad and Tobago
,
November
2011
Plant nutrient deficiencies
Recognize the problem
Like humans, plants need food for survival. Nutrients are the food that plants
need to grow and mature. Nutrients are added to the soil or to the leaves of
plants as fertiliser.
Young leaves turn light green and the lower leaves are yellow and shrivelled.
Signs of deficiencies can be seen on leaves...

plantwise.org

Crop Protection


Bacterial leaf streak (Xanthomonas oryzae pv oryzicola)


Exotic pest alert: rice water weevil


Exotic pest alert: rice blast


Exotic pest alert: South African citrus thrips


Exotic pest alert: African citrus psyllid


Common pests and diseases on mango: Ghana


Common insect pests on tomato: Ghana


Common pests and diseases of coffee


Common pests and diseases of maize


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