By Julie Flood
Espresso Wilt illness has price African espresso farmers an anticipated US1 billion to this point, due to decreased yields and the additional bills incurred in attempting to deal with the affliction. This devastating fungal disorder has destroyed thousands of espresso bushes in affected international locations throughout Africa and should be a contributory think about any try out at revitalization of the African espresso region within the future.This e-book is among the outputs of the neighborhood espresso Wilt Programme and is a compilation of the present wisdom of assorted features of CWD, together with information regarding the pathogen, its unfold and importantly its administration.
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Additional info for Coffee Wilt Disease
Solani and F. oxysporum and 36 Hakiza et al. were confirmed as the cause of localised wilting and death of arabica coffee in those districts (Arua, Nebbi, Bushenyi, Kasese, Ibanda, Rukungiri, Mbale, Sironko, Bududa and Manafa districts). Root rot caused by A. mellea Vahl has also caused concern and has been mistaken for CWD. Insect attacks, the most common of these encountered in the arabica areas, that induce wilt symptoms that can be confused with CWD are coffee stem borers (B. sierricola), coffee root mealybugs (Planococcus ireneus) and twig borers.
4) showed that CWD was causing 77% loss in yield of robusta coffee at the national level. 2% in Rakai district to 94% in Hoima. Even among districts with the least losses in yield such as Rakai, some individual farms incurred losses of more than 50%. The current situation indicates the presence of the disease in all robusta districts (Fig. 1). , Busia and Arua districts, has also been confirmed. The incidence and severity, however, have markedly declined in all the districts probably because the most susceptible plants were attacked first and those that have escaped or have some resistance are currently being infected.
The main pest on robusta has been coffee berry borer, which can be controlled by good cultural practises such as regular picking, stripping off and burning old and dry cherries (‘mbuni’) that remain on the trees at the end of the picking season. These practises remove sources of potential infestation and destroy the insects within the berries as well as their food source. Pruning is essential to keep the canopy more open, less humid and unattractive to the pest. Root mealybugs have been causing serious but localised damage on robusta coffee, and the symptoms have sometimes been confused with CWD.