Yellows

Names

Yellows in different languages.

Yellows diseases

Resources

47 resources available. Click on the image to preview, click on the publisher link to download.

The basic rules of safe agro-chemical use


20167800579.jpg

FACTSHEETS FOR FARMERS www.plantwise.orgCreated in Zambia, July 2015 The basic rules of safe agrochemical use Recognize the problem Farmers use chemicals for preventing, repelling or killing insect pests, diseases, nematodes or weeds. These chemicals are useful, but are a danger to the health of farmers and consumers if not used well. The problem is that farmers often: • Do not wear protective clothing • Do not read and follow instructions on...

plantwise.org

Management of birds in rice fields


20147800117.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Sierra Leone
,
September
2013
Management of birds in rice fields
Recognize the problem
In Sierra Leone, birds, especially the weaver birds and sparrows, are
recognised as troublesome animals that cause serious damage to rice plants.
Birds damage rice from the time of planting the seeds in the field to
maturation. The entire crop field can be spoilt if the population of birds grows....

plantwise.org

Prevention of nitrogen deficiency in maize


20167800235.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Malawi
,
July
2013
Prevention of Nitrogen deficiency in maize
Recognize the problem
Nitrogen deficiency results in reduced yields. The problem of nitrogen
deficiency is common in many parts of Malawi. Symptoms of nitrogen
deficiency in the soil are stunted growth of maize plants and yellowing (then
death) of leaves which start from the bottom of the plant.
Background
Nitrogen helps...

plantwise.org

Safety spraying with knapsack sprayers


20147801017.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Tanzania
,
September
2013
Safety spraying with knapsack sprayers
Recognize the problem
Safety spraying of agrochemicals is important to effectively control pests and diseases
of crops without harming the operators. Their use needs technical knowledge to avoid
harming eyes, skin and internal organs (liver, kidneys, lungs), and to lower the risk of
developing cancer.
Background
A...

plantwise.org

Resistant rice against rice yellow mottle virus


20147801019.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Tanzania
,
September
2013
Resistant rice against rice yellow mottle virus
Recognize the problem
Rice yellow mottle virus is a disease of rice. Affected plants have yellow or
orange leaves at the early stage of the crop. In severe cases, leaves roll up and
dry. Other symptoms are stunting, reduced tillering and poor panicle filling.
This results in low or no seed production and poor...

plantwise.org

Management of flatid planthoppers


20137804415.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Bolivia
,
July
2012
Management of flatid planthoppers
Recognize the problem
The affected plants become yellow and dry. This insect attacks crops like corn,
potato and vegetables. It also attacks forage, some weeds, trees with pods,
tobacco bushes and refuges in the native forest.
The adults live on the undersides of leaves, stems, branches and flowers like in
corn. When they suck the...

plantwise.org

Sugarcane spittlebug


20137804416.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Bolivia
,
July
2012
Sugarcane spittlebug
Recognize the problem
The spittlebug feeds more during rainy periods. It sucks the sap from plants
while it injects toxic liquid, causing elongated pale-yellow spots. The leaves
become yellow and dry, reducing the sugar content and increasing the fiber.
The adult creates many holes in the leaves.
Background
The sugarcane spittlebug is a...

plantwise.org

Rice yellow mottle (Ikivejuru)


20127801765.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Rwanda
,
May
2012
Rice yellow mottle (Ikivejuru)
Recognize the problem
Rice plants infected with Rice Yellow Mottle (also called RYMV or
Ikivejuru
in
Kinyarwanda) have a yellowish streaking of leaves, are smaller than normal
and have fewer tillers. The panicle does not emerge from the sheath and is of
a bad shape, if it emerges, and with small and usually empty spikelet....

plantwise.org

Leaf coating mite on mango


20137804249.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Kenya
,
December
2012
Leaf coating mite on Mango
Recognize the problem
Leaf coating mites are very small whitish to cream orange, cigar shaped mites.
They are about
0.2
mm long and cannot be seen by eyes without aid.
The mites live in groups under a white coating on the upper leaf surface. The
affected leaves eventually drop off after yellowing.
In general, the coating has...

plantwise.org

Management of cucurbit fruit fly


20147801454.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Nepal
,
September
2012
Management of cucurbit fruit fly
Recognize the problem
Fruit fly is the most problematic insect pest of the cucumber group plants
(cucurbits), which includes cucumber, bitter gourd, pumpkin etc. It attacks
young and older stages. Maggots are found in infected fruits, which means the
fruits cannot be eaten.
Background
Fruit fly damage starts from March and ends...

plantwise.org

Harvesting and handling pineapples


20127802693.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Trinidad and Tobago
,
November
2011
Harvesting and handling pineapples
Recognize the problem
The timing and method are important when harvesting pineapples. For the
local and export market the time for harvesting is different and is sometimes
difficult to determine. Poor transporting from the field can bruise the fruit.
Background
After being picked, pineapples do not ripen or improve...

plantwise.org

Plant nutrient deficiencies


20127802697.jpg

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

Yellow stem borer on paddy


20137803905.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
India
,
2010
Yellow stem borer on paddy
Recognize the problem
Yellow stem borer is the most damaging insect on paddy. It feeds inside the
plant. Stems become dry and hollow and no grains are produced. The dried
stems can be pulled out easily and are called dead hearts. The empty grains
are known as white ears and detach easily.
Background
The insect has two different forms. The adult...

plantwise.org

Cabbage aphid


20137803907.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
India
,
2010
Cabbage aphid
Recognize the problem
Cabbage aphids are small insects which damage plants at all stages and reduce
the value of the crop. Locally they are called
beli henu
. They are dull green
with a white, waxy surface and often occur in dense groups. They are easy to
identify.
Background
Cabbage aphids feed on both sides of young and tender leaves. They breed
very...

plantwise.org

Fusarium yellows on Brassica


20137804273.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Kenya
,
December
2012
Fusarium Yellows on Brassica
Recognize the problem
Fusarium yellows disease occurs at all stages of crop growth. Disease
symptoms consist of yellowing of the lower leaves. The yellowing spreads to
the upper leaf which eventually leads to leaf fall leaving only the middle leaves.
The plant may eventually die.
Background
This disease is found both on seed and soil...

plantwise.org

Maize borer


20127801189.jpg

FACTSHEETS FOR FARMERS
www.plantwise.org
Created in
Sierra Leone
,
December
2006
Maize borer
Recognize the problem
The borer is a very damaging pest. It attacks maize before and at the start of
flowering and reduces the size of cobs. Stems collapse and the plant produces
little grain.
The borers are caterpillars. They are usually pink and between
5
or
10
millimetres long.
Background
The caterpillars dig brown or black tunnels...

plantwise.org

GrowNote Barley West 14 Environment


GrowNote-Barley-West-14-Environment.jpg

FROST | SOIL MOISTURE ISSUES FOR BARLEY
WESTERN
SEPTEMBER 2018
SECTION 14
ENVIRONMENTAL ISSUES
BARLEY1 ENVIRoNMENtAl ISSUES
seCtIon 14 BARLEY
JUNE 2017
Environmental issues
14.1 Frost
Frost damage to cereals is a significant annual production constraint for the Australian
grains industry and can result in considerable yield losses. It has been estimated
to cost Australian growers around $360 million in direct and indirect yield losse\
s...

grdc.com.au

GrowNote Canola West 11 Desiccation


GrowNote-Canola-West-11-Desiccation.jpg

WESTERN
SEPTEMBER 2018
SECTION 11
CROP DESICCATION/
SPRAY OUT
CANOLASECTION 11 CAnolA - Crop desiccation/spray out
1
August 2015
Feedback Table of Contents
SECTION 11
Crop desiccation/spray out
(For information on swathing, see Section 12. Harvest.)
Chemical desiccation is an alternative to swathing and very effective where crops
have lodged or where weeds have emerged in maturing crops. The most commonly
used desiccant is diquat (Reglone...

grdc.com.au

GrowNote Canola West 14 Environment


GrowNote-Canola-West-14-Environment.jpg

FROST | WATERLOGGING AND FLOODING
WESTERN
SEPTEMBER 2018
SECTION 14
ENVIRONMENTAL ISSUES
CANOLASECTION 14 CAnolA - Environmental issues
1
August 2015
Feedback Table of Contents
SECTION 14
Environmental issues
Frost, moisture stress and heat stress can all have an impact on grain yield, oil
content and oil quality. Frost can occur at any time during the growth of the canola
plant, but the most damaging frosts occur when pods are small....

grdc.com.au

GrowNote Lentil West 11 Pre Harvest Treatments


GrowNote-Lentil-West-11-Pre-Harvest-Treatments.jpg

KEY POINTS | DESICCATION | CROP-TOPPING | SWATHING
WESTERN
JUNE 2018
SECTION 11
PRE-HARVEST TREATMENTS
LENTIL1 pre-harvest treatments
Section 11 LentiL
June 2018
pre-harvest treatments
Key points
• Crop-topping is a form of desiccation, and is common practice in lentil.\
• timing of crop-topping is based on weed stages of development to prevent \
weed seedset.
• Crop desiccation is used to aid in uniform ripening of the crop and to k...

grdc.com.au

Pages

Filter by related crop:

Natural enemy

Q&A

Images

No images for Yellows in the system yet.