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Fuchsia Rust



P_fuchsiarust

Fuchsia Rust

Usually appear in

All year


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Caused By:-     The Fungus Pucciniastrum epilobii

Description

Fuchsia rust is a fungus disease that spreads by airborne spores and need other genus such as Abies (fir) and willowherbs (Epilobium spp.) to complete its life cycle. Fuchsia is related to willowherb and will be affected by the fungus as well. The symptoms is that first large circular areas of chlorosis appear on the upper surface of the leaves and on the underside of the leaves, masses of yellow-orange spores are produced from the pustules. These are spread by the wind to initiate new infections on other leaves. In late summer and early autumn the pustules produce dark, overwintering spores which survive the winter on infected plant material and germinate in the spring to release spores which can only infect Abies, where the fungus goes through a further cycle of development, releasing airborne spores which can reinfect fuchsias. Later, leaves shrivel and the vigour of the plant is greatly reduced. Picture by Department of Plant Pathology Archive, North Carolina State University, Bugwood.org.
See also these other rusts Antirrhinum, Bean, Bluebelle, Broad Bean, Cedar Quince, Chrysanthemum White, Gladiolus, Gooseberry, Hollyhock, Juniper Pear, Mahonia, Mint, Pear Juniper, Pelargonium, Periwinkle, Plum, Potato Internal, Quince, Rust, Rhododendron, Rose, Rust, White.


Control

In the European Community the products permitted under organic regimes have little effect on Fuchsia rusts. Fungicides containing myclobutanil (Bayer Garden Systhane Fungus Fighter and other formulations), penconazole (Westland Fungus Attack) and triticonazole (Scotts Fungus Clear Ultra) can be used to control rust on fuchsias, but fuchsias are very sensitive to damage by this type of fungicide and care should be excercised when using these fungicides.
Those who grow Fuchsias should avoid having Epilobium and Abies species growing nearby and pick off then burn affected leaves as soon as they are noticed. Foliar feeding the plants will help to boost plant vigour and help the Fuchsia's own defences.
The fungus is encouraged by high humidity with a lack of air circulation.
It overwinters on old plant materials so these should be burnt.
Spraying with a suitable fungicide is necessary and must be carried out several times.
As with any fungal disease one of the best ways of preventing it is by good hygiene. Remove all dead leaves in autumn to prevent the spores from over wintering. If the leaves is from an infected plant burn them.
Check plants regularly and remove infected leaves by hand as soon as they are seen and then spray with a suitable fungicide. Spray the plant and the soil around it with a fungicide suitable for the control of rust fungus.
Water the compost of susceptible plants directly trying not to wet the foliage as the rust needs a period of leaf wetness to germinate and infect.
Watering the soil in the dormant season with Jays fluid or Amarillotox should also help. In some Countries these products are not licensed for this use.
Maintain an open structure to allow good air circulation through the plant and ensure greenhouses are always well ventilated. Rotate bean with non-host crops.
Often there are resistant varieties of the plant you wish to grow.
Avoid over application of nitrogen, which produces soft growth which is more susceptible and ensure adequate potassium fertiliser.



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