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How to take a soil sample for analysis


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FACTSHEETS FOR FARMERS
www.plantwise.orgCreated in Zambia, September 2016
How to take a soil sample for analysis
Recognize the problem
Farmers experience deficiencies of nutrients such as phosphorous, calcium,
magnesium and other deficiencies in their fields which reduce plant growth and
yield. To address these deficiencies, professional soil testing is required to
understand which soil nutrients are present at what quantities in the soils and...

plantwise.org

Grapevine downy mildew


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Afghanistan
,
2013
Grapevine Downy mildew
Recognize the problem
This disease can be seen all over the green parts of the plant. Areas affected
first become yellow then turn more purple. Eventually, the leaves dry out and
gradually fall from the tree. Most of the time this disease attacks the grape
clusters, causing the fruit to dry out and stay small. After the leaves have
begun to...

plantwise.org

Citrus butterfly


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Bangladesh
,
September
2013
Citrus Butterfly
Recognize the problem
The Citrus butterfly is a common and widespread swallowtail butterfly. It gets
its common name from its host plants, which are usually citrus species such as
the cultivated lime. Unlike most swallowtail butterflies, it does not have a
prominent tail. The butterfly has also been referred to as the 'Butterfly of
Death...

plantwise.org

Bean root rot and wilt


Citrus withertip


Betel leaf rot


Purple blotch in onions


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Bolivia
,
July
2012
Purple blotch in onions
Recognize the problem
Purple blotch is one of the diseases that cause most damage to the onion. It
causes deep white spots with a yellow halo and a purple or red centre. In
humid climates, the spot surface becomes dark or coffee-colored. Within 2 to 3
weeks, these spots surround the leaves. In the bulbs, the infection appears
close to...

plantwise.org

Control of leafcutter ants


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Bolivia
,
July
2012
Control of leafcutter ants
Recognize the problem
Leafcutter ants are a type of ant. They are important pests of maize, rice,
sorghum, bean, vegetables, fruit trees and forest trees.
The main damage they cause is by cutting the the plant leaves. However,
these leaves are not eaten but taken to their nests for the cultivation of a
fungus, on which they feed....

plantwise.org

Powdery mildew of grapevine


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Afghanistan
,
October
2012
Powdery mildew of grapevine
Recognize the problem
Powdery mildew is a fungal disease. It attacks all parts of the plant including
leaves, fruits and vines. The symptoms include a dusty appearance of whitish
or greenish-white powdery patches on the underside of the leaves. In severe
cases, green leaves curl upwards and turn white or yellow. Shoots are also...

plantwise.org

Termites on mango


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Kenya
,
December
2012
Termites on Mango
Recognize the problem
Termites are social insects that live in groups called colonies. They mostly feed
on dead plant material such as wood and leaf litter. To confirm their presence,
pull out the affected plant and look for live termites and tunnels on the roots
and lower stem. Sometimes you can tell that there are termites present
because of...

plantwise.org

Club root of cole crops


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Nepal
,
September
2012
Club root of Cole Crops
Recognize the problem
The disease club root is caused by a fungus. The diseased plants become weak
and stunted, and show temporary wilting symptoms during sunny days. The
roots are swollen in to lumpy club-like galls.
Background
Club root is an economically important disease in all cole crops. Once the
disease appears, its control is...

plantwise.org

Button shedding in coconut


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
India
,
November
2012
Button Shedding in Coconut
Recognize the problem
Premature button shedding is a very common problem observed on coconut.
Buttons can be shed after fertilization and some nuts are shed after setting.
This is not due to a single cause but may be due to combination of one or
more factors. The economic loss ranges from 10 to 20%.
Background
Shedding of buttons and...

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

Club root on Brassica


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Kenya
,
December
2012
Club root on Brassica
Recognize the problem
Visible symptoms include wilted and yellowish leaves, and stunting of the
plants.
If a sick plant is uproot, more symptoms may be visible on the roots. Club root
disease causes huge swelling and distortion of the roots. Some Brassica crops
like turnips develop swellings called galls while others like broccoli and...

plantwise.org

Coconut basal stem end rot


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FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
India
,
November
2012
Coconut Basal Stem End Rot
Recognize the problem
This chronic problem was first noticed in Tanjore in Tamil Nadu and hence is
sometimes known as Tanjore wilt disease. It later spread to all coconut
growing tracts of India. In the initial stages of the disease, profuse bearing of
nuts is noticed. The characteristic symptoms of the disease are the exudation
of...

plantwise.org

Pest control products recommended for use on grapes in British Columbia


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1Group number for resistance management (see p. 7-6, Best Practices Guide for Grapes ) 2Re-entry interval on the label (see p. 7-2). Re-entry interval s for grapes usually vary widely by activity. See label for details where a range of re -entry tim es are shown. An asterisk(*) indicates that no re -entry is shown on the label, but the WorkSafe BC re -entry interval may apply and is shown. 3Pre -harvest interval (see p. 7-13...

www2.gov.bc.ca

UC Management Guidelines for Phomopsis Cane and Leafspot on Grape


Stem rot (Sclerotium oryzae)


Physiological disorders of tomato


Healthy maize, better harvest: phosphorus


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