The focus for the grapevine virus survey is shifting for 2020 and we are looking for vineyards planted 2018 or later this year.
For the past 2 years we have been sampling vineyards to test for grapevine leafroll associated virus and grapevine red blotch virus. The vineyard blocks were chosen randomly and the majority of blocks sampled happened to be 10 years old or over. For the final year of the survey part of the project, we are shifting focus to younger plantings. We are looking for vineyard blocks 3 years old or younger to sample in August. Sampling involves collecting one leaf from each of 400 vines in the block. Petioles will be tested for grapevine leafroll associated virus (GLRaV) and grapevine red blotch virus (GRBV) and results will be sent to cooperators and used in pooled anonymous reporting. Please contact Wendy McFadden-Smith at email@example.com as soon as possible so we can organize our survey for 2020.