Publications by authors named "Vaughn A Bell"
Article Synopsis
- * New Zealand has successfully developed integrated pest management (IPM) strategies over the past 20 years to combat GLD, focusing on ecosystem-based biological solutions and research specifically tailored to the country's grape production conditions.
- * The review outlines advancements in diagnosing GLRaV-3, studies on its vectors' ecology, and economic implications of disease management strategies, highlighting collaborative efforts of researchers and the New Zealand Winegrowers to effectively address GLD.
Article Synopsis
- Grapevine leafroll disease (GLD), primarily caused by the GLRaV-3 virus, affects wine production globally, and in New Zealand, it is managed through an integrated program including the removal of infected vines.
- Visual symptom identification (VSI) relies on recognizing leaf changes in virus-infected red-berry grape cultivars, with symptoms varying based on grape variety, GLRaV-3 genotype, and growing conditions.
- The study found that while white-berry cultivars showed no symptoms, red-berry cultivars exhibited significant variability in symptoms early in the season, but by the end of three growing seasons, VSI proved to be a highly reliable (>95% accuracy) method for managing GLD in Mer
Grapevine leafroll-associated virus 3 (GLRaV-3), an economically significant pathogen of grapevines, is transmitted by , a mealybug commonly found in New Zealand vineyards. To help inform alternative GLRaV-3 control strategies, this study evaluated the three-way interaction between the mealybug, its plant host and the virus. The retention and transmission of GLRaV-3 by after access to non- host plants (and a non-GLRaV-3 host) White clover ( L.
View Article and Find Full Text PDFAnt species like Pheidole megacephala (F.), Solenopsis invicta (Buren), and the Argentine ant, Linepithema humile (Mayr), have repeatedly been reported to be strongly associated with honeydew-producing arthropods like aphids, scale insects, and mealybugs, effectively protecting them from biological control agents like parasitoids. Here we report the results of a successful trial using pheromone dispensers to suppress Argentine ant activity over large sections in a commercial vineyard over a period of two months and preventing ant access into and foraging within the vine canopy.
View Article and Find Full Text PDFBackground: Invasive ants, such as the Argentine ant, have often been reported to facilitate honeydew-producing hemipteran pests such as mealybugs, which can be vectors of plant pathogens. Synthetic pheromones may offer a target-specific method to control such ants and consequently lower the abundance of honeydew-producing pests. Here we report the results of a trial to suppress Argentine ants in grapevines using ant pheromone dispensers.
View Article and Find Full Text PDFGrapevine leafroll disease (GLD) is caused by a complex of vector-borne virus species in the family Closteroviridae. GLD is present in all grape-growing regions of the world, primarily affecting wine grape varieties. The disease has emerged in the last two decades as one of the major factors affecting grape fruit quality, leading to research efforts aimed at reducing its economic impact.
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