Subjects affecting wine grape (Vitis vinifera)
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Image Subject Name Scientific Name Description
0454063 Grapevine phylloxera, vine louse Phylloxera vitifoliae Severe symptoms of the gallicolae form of Viteus vitifoliae on grapevine, showing extensive leaf galls.
0177091 Ground pearls, margarodes Margarodes spp. Damage on grapevine caused by Margarodes.
0177090 Ground pearls, margarodes Margarodes spp. Damage on grapevine caused by Margarodes.
0660088 Japanese beetle Popillia japonica damage to grapevine.
5356699 2,4-D 2,4-D damage to a grapevine.
5366577 cold injury (low temperature) Stems of grapevines showing buds killed by cold winter temperatures.
5356823 chemicals Damage to a young grape vine due to 2,2-D.
5356769 downy mildew Plasmopara viticola Grapevines showing defoliation from downy mildew (Plasmopara viticola) and straw placed over the stems to protect them from sunburn.
5356698 soil & water Salt damage to a grapevine.

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