National Grape Research Alliance

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

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

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

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

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

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

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

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

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

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

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

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

At a recent conference, @OregonState SOREC Director @aleclevin reported that detection and diagnosis of grapevine red blotch virus is a rich area of research. Roguing remains the best way to manage GRBV. No product is labeled to combat it. #graperesearch tinyurl.com/msd4un6u

Our Feb newsletter is out! Click to find out which 5 leaders joined our Board in Jan; get your ticket for NVEELC 2026; learn how similar the economics are for regenerative and conventional viticulture; and more! #graperesearch bit.ly/3iQwewr 📸Layla Aguilar, @famfarms

Listen in as Suzanne Fleishman, Assistant Professor of Root Biology at Penn State University, describes how managing root systems holistically, including those of grapevines and cover crops, can improve vineyard sustainability. #graperesearch tinyurl.com/mw49p7pn

Croplands make up 12% of global land use but 25% of ag GHGs. Cornell researchers mapped cropland emissions at ~10 km resolution by crop & source to target mitigation. In 2020, fruits & veggies were 7% of global GHGs; rice was 43%. #graperesearch tinyurl.com/y75tw5fd

In a first-of-its-kind study, winegrape growers in Napa Valley participated in a UC Davis-led study to assess soil health in vineyards and link it to production outcomes. #graperesearch tinyurl.com/yc6vj3mv

After 19 years of breeding, @USDA_ARS & @Cornell AgriTech developed Vignoles 2, a loose-clustered version of the popular hybrid Vignoles. It keeps comparable wine quality while cutting bunch rot by ~80% #graperesearch tinyurl.com/4kypd8y4

Some EU wine producers needing greater flexibility to respond to climate change are abandoning their appellations rather than struggle with regulations. Winemakers around the world wonder, are geographical indications relevant anymore? #graperesearch tinyurl.com/2z8st6ap

Follow your tissue or soil samples into the lab for a behind-the-scenes look at vine nutrient testing. Experts from Penn State and Soil Test Farm Consultants share how they process samples and ensure accuracy, and why certified labs matter. #graperesearch tinyurl.com/yzt5jdb6