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This research investigated the effects of wounding, fruit age and wetness duration on the development of cherry brown rot. Both Monilinia laxa and M. fructigena infected wounded detached cherry fruits, but M. laxa caused more infections than M. fructigena and only M. laxa efficiently infected intact detached fruits. Results from field monitoring and controlled inoculation in a polyethylene tunnel showed that the susceptibility of fruits to infection by M. laxa increased with fruit maturity. Infection of attached intact fruits by M. laxa was not affected by the length (3–24 h) of the wet period tested. [ABSTRACT FROM AUTHOR]

This article investigates the spread of the necrotic rusty mottle virus disease among sweet cherry plants in Great Britain. Because of confusion with the effects of necrotic ring spot virus and Pseudomonas mors-prunorum, necrotic rusty mottle disease has long been overlooked, except in the form described as Frogmore virus canker, in English sweet cherry orchards. From transmission tests using the Lambert variety, it is now clear that the virus disease is widespread and responsible for the low productivity of certain varieties, particularly Frogmore, Florence and Noble, in some orchards. The variety known as Tradescant's Heart may be an uninfected clone of Noble. The virus spreads naturally, but the rate of spread is uncertain because some varieties become infected without producing recognizable symptoms.

Observations in cherry and plum orchards in England confirm that, as on the continent of Europe, Argyresthia pruniella (Clerck) and not A. curvella (L.) is associated with these crops. The pest status of A. curvella on cherry, therefore, should no longer apply and in its place A. pruniella should be designated the cherry fruit moth. [ABSTRACT FROM AUTHOR]

Examines the occurrence of Cherry virus A (CVA) in planting material in Great Britain. Presence of CVA in leaf and bark material; Impact of CVA on fruit yield from cherry orchards; Etiology of cherry diseases.