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Grape Wine Research Inc.

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Wine Grape research Inc.

000200 - Establishing Best Practices Guidelines to Optimize Grapevine Winter Hardiness

Completed: 01/09/2014
Lead Researcher: Debbie Inglis

This project is the next phase of the bud hardiness component of a larger winter injury research initiative (CanAdvance project – Evaluating Grapevine and Tender Fruit Winter Hardiness to Developing Best Environmental Practices for Using wind Machines to Reduce the Effects of Cold Injury 2005-2008) that was completed in spring 2009. Now that the measurement techniques have been developed to reliably measure bud hardiness, factors that influence bud hardiness can now be assessed to develop Best Practices Guidelines to Optimize Winter Hardiness for Grapevines.

Monitoring vine acclimation to cold using low temperature exotherms and the Tenny Freezer unit has allowed researchers to monitor the temperature at which 10%, 50% or 90% of buds were killed for 12 Vitis vinifera varieties and two hybrid varieties across Niagara. Monitoring bud hardiness throughout the dormant period has proven to be an invaluable tool to assist grape growers in managing winter injury by using the changing bud hardiness data to determine when wind machine use is warranted to protect the vines and by also understanding when, during the dormant period, bud injury occurred.

With this established and reliable measurement technique, we are now in a position to further extend this research to look at factors that optimize vine hardiness.

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000300 - Fine-Tuning Management of Grape Berry Moth

Completed: 01/12/2012
Lead Researcher: Wendy McFadden-Smith

Female grape berry moth trap catches (as well as other biofixes, such as bloom of wild grape and male moth trap catches) and a model using degree day accumulation will be used to model the development of GBM over the season. This information will be used to fine-tune our sprays for GBM by having the most accurate estimates of moth activity. Cultural or chemical methods to change microclimate and/or canopy architecture will be evaluated for their potential to reduce GBM injury. The relationship between bunch rots and GBM injury will also be investigated.

Mating disruption is used in many vineyards in Ontario. The application of twist tie dispensers is labour intensive and may preclude wider adoption of this practice. If border applications of twist ties or a new sprayable formulation of pheromone are shown to be effective, adoption of this practice could reduce the cost of this method and could encourage wide-spread use of the technology.

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000400 - Management of Sour Rot and Volatile Acidity

Completed: 01/04/2012
Lead Researcher: Wendy McFadden-Smith

Cultural and chemical treatments will be evaluated for their effectiveness in reducing sour rot and volatile acidity in the vineyard. Treatments to alter the architecture of the clusters, reducing berry-to-berry contact and duration of optimal conditions for infection by sour rot organisms will be evaluated in replicated trials. Chemical treatments will be applied both prophylactically and after the development of sour rot to determine their ability to prevent infection and/or to reduce volatile acidity once sour rot is established. These experiments will be repeated a second and third year to accumulate data on responses over a number of weather seasons.

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000500 - Determining Activity Patters of Multi-Coloured Asian Lady Beetle in Niagara to Optimize Control Practices

Completed: 15/01/2010
Lead Researcher: Kevin Ker

A significant challenge to the production and processing of premium grapes is the infestation by Multi Coloured Asian Lady Beetle (MALB) close to harvest. Due to the uncertainty of populations and zones of infestation many growers are left guessing whether or not to treat for MALB and if populations are high enough to warrant control. Populations of MLB are erratic with no two growing seasons having the same numbers of MALB present or cultivars impacted. Wine quality has been documented as severely affected and it has been published that the best control strategy for MALB must take place at the vineyard level

To assess MALB activity across the Niagara Region in the pre harvest and Harvest period to provide information to producers on locations of activity and to assist in determining if preventative controls are required. Information to be posted on KCMS website and brief oral message recorded each week on the GGO Crop report 905 708 6620

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000600 - Consumer Perceptions of Quality for Horticultural Products and Wines: Impact of Production Practices and Region of Origin

Completed: 31/03/2012
Lead Researcher: Isabelle Lesschaeve

The demand for local products as well as organic or sustainable production has created a major gap in the wine market which presents a tremendous opportunity to the Ontario wine industry. In order to fill this gap and increase market share for 100% Ontario wines, it is necessary to understand consumer preferences and behaviour. There is currently a serious lack of knowledge of how Ontario consumers actually respond to the production practices and region of origin of wines they purchase and this project aims to address this. This research will combine innovative methods in sensory and consumer science and behavioural economics to determine Ontario consumers’ perceptions and preferences for buying and consuming local, organic or sustainable wines in relation to price, sensory experience, and region of origin. This will identify critical psychological and sensory factors determining consumer purchase and consumption behaviours, allowing the Ontario grape and wine sector to make informed decisions in order to deliver the products consumers want.

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000700 - Sustainable Practices for Repelling Malb and Seven Spot Lady Beetles from Ontario Vineyards

Completed: 01/10/2010
Lead Researcher: Rebecca Hallett

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