NGRA works to align the priorities for research across wine, juice, table and raisin grapes nationwide, and to help get important projects in motion.
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The March NGRA newsletter is out! Learn how NGRA seeks to grow support for #graperesearch and what problems our new research initiatives aim to solve; find out who's speaking at NVEELC and discover a vine nutrition sampling model that's 75% more efficient. bit.ly/3iQwewr
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Measuring inversions for frost protection and spray decisions. Mark Battany, formerly of UC-Cooperative Extension, explains temperature inversions, how to manage frost control, and what inversions mean for spray applications.
#graperesearch tinyurl.com/3r38bp8z
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UC Davis doctoral student Arpa Boghozian and collaborators at USDA-ARS tested calcium sprays as a possible way to reduce smoke uptake in grapes by strengthening skin cell walls. Analysis is ongoing.
#graperesearch tinyurl.com/bdeyu3xk
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From its role in energy transfer and DNA structure to its influence on root growth and fruit development, phosphorus is woven into nearly every aspect of vine physiology. But applying too much wastes money and reduces efficiency.
#graperesearch tinyurl.com/ysjjk6sb
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In a @UArkansas study of 2,000 U.S. wine consumers, glass was preferred over alternative packaging... until carbon footprint data was introduced, shifting attitudes toward aluminum, PET, and flexible options.
#graperesearch tinyurl.com/y4kmjupu
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Targeted use of UV-C during ripening: Italian researchers exposed Cabernet Sauvignon vines to UV-C during ripening. They found higher concentrations of anthocyanins and flavanols in the treated fruit.
#graperesearch tinyurl.com/3tb9sbpp
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How do you choose the right cover crop? UC Cooperative Extension’s Sarah Light shares insights on cover cropping + the expanded Species Selector tool, now nationwide, to guide decisions by region, crop, and goals.
#graperesearch tinyurl.com/mwuchsc
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Grapevine trunk diseases remain a global challenge. New research is testing treatments including silver–selenium nanoparticles, antioxidants, iron chelators, and aqueous ozone to help manage GTDs.
#graperesearch tinyurl.com/527ny3ct
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A survey of 500+ California farmers (50 counties) found <1% lost workers directly due to immigration enforcement, but 15% lost workers due to related concerns and 14% reduced production as a result.
#graperesearch tinyurl.com/mw8x2b48
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Powdery mildew can survive winter in dormant buds, a strategy called bud perennation. In spring, infected “flag shoots” emerge at budburst, creating early vineyard hotspots that can drive season-long disease pressure.
#graperesearch tinyurl.com/ysjvftx2
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A new approach to Grapevine Red Blotch: @OregonState PhD student Christian Mandelli applied dsRNA targeting GRBV to infected vines, achieving a 95% reduction in RepA gene expression lasting three months. Trials are being replicated.
#graperesearch tinyurl.com/ym287vhb
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Consumers are willing to spend nearly 10% more on sustainably produced or sourced goods despite ongoing cost of living pressures, according to @PwC's 2024 Voice of the Consumer Survey #graperesearch tinyurl.com/3b7ma98j
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Do vine mealybugs favor certain grape cultivars? Researchers Summaira Riaz (@USDA_ARS ) and Luis Diaz-Garcia (@UCDavis) are studying vector survival on vinifera, hybrids, and rootstocks to help slow the spread of leafroll disease.
#graperesearch tinyurl.com/35fuym92
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Instead of mowers and herbicides, land managers are turning to goats and sheep for vegetation control. Targeted grazing can clear brush, manage weeds, and reduce fire risk where machinery or herbicides aren’t practical.
#graperesearch tinyurl.com/bdh7f2cp
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Researchers at National Kaohsiung University of Hospitality & Tourism are defining wine styles for Taiwan’s subtropical climate and terroir, using interspecific grapes to develop sweet and fortified wines adapted to challenging conditions.
#graperesearch tinyurl.com/5b5ywvec
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According to research co-led by @WSU and @AuburnU , promoting women’s roles in the production of a bottle of wine can boost sales—and sales price—among women, the largest group of U.S. wine consumers.
#graperesearch tinyurl.com/4evt6fcx
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Researchers at @OregonState developed a model to map the phenology and climatic suitability for spotted lanternfly in the US with near-real-time forecasts available at USPest.org.
#graperesearch tinyurl.com/53fmed2n
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Grape geneticist José Vouillamoz recently confirmed that Turkish variety Kolorko is genetically identical to Furmint, the iconic white grape of Hungary’s Tokaj region, likely introduced via cuttings brought by Hungarian nobles in the 1700s. #graperesearch tinyurl.com/a5tt83s3
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At his 2025 ASEV Honorary Research Lecture, @WSU's Markus Keller distilled 20 years of berry water-flow research: final berry size depends on inflow vs. outflow, with pre-veraison water supply driving the biggest management effects.
#graperesearch tinyurl.com/5xkccsmf
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