Spatial Roguing Reduces the Incidence of Leafroll Disease and Curtails Its Spread in a Finger Lakes Cabernet franc Vineyard

Abstract

, and several others who assisted with leaf sample collections and mealybug counts. We are indebted to the Associate Editor and two anonymous reviewers for their valuable comments. We acknowledge the gift of clean Cabernet franc vines by Wonderful Nurseries and Knights Grapevine Nursery, the gift of insecticides by Bayer AG and Corteva Agriscience TM , and the financial support of the USDA-NIFA Specialty Crop Block Grant Program, and the National Institute of Food and Agriculture through the Federal Capacity Funds program.

Assessment of Symptoms of Grapevine Leafroll Disease and Relationship with Yield and Quality of Pinot Noir Grape Must in a 10-Year Study Period

“…Roguing is therefore fully justified in the case of early and strong symptoms and must be performed as early as possible, since our data indicate that such symptoms predict economic losses. If replanting is necessary, it is better to do it during the first years after planting [29].…”

“…Making decisions about roguing infected plants can be based on direct observation of GLD symptoms or tele-detection of symptoms [32] at least in red cultivars [13]. However, some infected plants could remain undetected, making some proposed roguing strategies ineffective [29].…”