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Crop reduction in pear trees caused by virus infection


, : Crop reduction in pear trees caused by virus infection. Acta Horticulturae (44): 119-122

Four virus diseases, rough bark of pears, vein yellow, pear ring mosaic and stony pit, decreased yields in the pear cvs Beurre Hardy, Bosc, Clara Frijs and Williams' during a 7-year period. Rough bark disease stunted the affected trees considerably.

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Related references

Posnette, A.F.; Cropley, R.; Christina Ellenberger., 1963: The effect of virus infection on the growth and crop of Apple, Pear, and Plum trees. The ensuing discussions are included. Prune dwarf virus and plum line pattern virus reduced the growth and crop of some plum vars. while plum stunt and plum bark split virus have so far affected only growth. Apple star crack severely reduced the c...

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