is one of the most imprtant fruits in the world. Unfortunately, it is
affected by a virulent disease: bacterial wilt. This bacteria reduces plant
yields and eventually kills the plant. It causes the stem to soften and
leaves to wilt and fall. We also see black or brown spots on and inside the
stem. The plant dies when the disease is at an advanced stage.
disease is caused by a bacteria that lives near the surface of the fruit. It
arrives in the field by wind or rain and can be transmitted by infected seeds
disease can be transferred from one plant to another through water splash
during the rainy season, or by unclean agricultural tools.
a plant is infected, it is important to remove it straight away in order to
reduce the inevitable spread. This cultural method is extremely useful and
should be done for many diseases in the field.
Monitor the field once a
week. This will allow for early detection and removal from the field. Farmers
should ask their tomato-growing neighbours to be vigilant and act as soon as one
infected plant is seen.
Remove the whole plant
(including the roots) and place it in a large plastic bag. Remove from the
field and burn the plant.
To avoid rainsplash in the
field, place fabricated mulch at the base of the plant, espcially if you
notice rainsplash in one part of your field.
Remember to clean
agricultural tools after using them in the field with ethanol, or place them
over a hot flame for 10 to 15 seconds, to destroy the disease.
If we look inside the stem, we can see
some back brown patches near the collar.Photo byClemson University - USDA Cooperative Extension Slide Series
The disease causes a general wilt and
dring of the plant.Photo byPhil Taylor
The recommendations in this factsheet are relevant to:
Democratic Republic of the Congo