
What is Crown Gall? Crown gall is a serious disease affecting grapevines, particularly in cool-climate viticulture. It is caused by the soil- and plant-borne bacterium Agrobacterium vitis (A. vitis). This pathogen induces tumor-like growths (galls) that disrupt the grapevine’s vascular system, reducing the flow of water and nutrients from roots to shoots. If left unmanaged, crown […]
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