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Crop reduction in pear trees caused by virus infection


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


Accession: 000329498



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