Now showing items 1-20 of 40

    • Bud Fruitfulness and Yeild 

      Martinson, Timothy E.; Lasko, Alan; Bates, Terry (Cornell University, 2012-05)
      Bud fruitfulness is determined early in bud formation, starting around bloom and continuing through about 30 days after bloom during the previous growing season. Shaded buds are less fruitful than buds from canes exposed ...
    • Conversion Factors: From Vineyard to Bottle 

      Gerling, Chris (Cornell University, 2011-12)
      How many grapes does it take to produce a glass of wine? Cases per ton? Bottles per acre? Hectoliters per hectare? Chris Gerling explores the ins and outs of conversion factors.
    • Downy Mildew is caused by an Oomycete. What’s an Oomycete? Why does it matter? 

      Gold, Kaitlin (Cornell University, 2021-03)
      Downy Mildew is not a fungus. Dr. Katie Gold explains why plant pathologists distinguish Oomycetes from fungal pathogens, and why it matters for management.
    • Formal and Informal Wine Sensory Evaluation 

      Mansfield, Anna Katherine (Cornell University, 2010-08)
      Anna Katharine Mansfield discusses the purposes and applications of wine sensory evaluation.
    • Grape Berry Moth Management 

      Weigle, Tim (Cornell University, 2011-04)
      A new forecasting model and the Grape Berry Moth Risk Assessment Protocol help growers manage grape berry moth.
    • How Defoliation, Defruiting, and Extreme Shoot Reduction Affected Clusters, Fruit Composition, and Bud Hardiness 

      Martinson, Timothy E. (Cornell University, 2017-11)
      Extreme changes in leaf area, shoot number, and crop level applied to Riesling vines changed yield components and bud freezing temperatures.
    • How Grapefine Flowers Form 

      Martinson, Timothy E. (Cornell University, 2018-11)
      Flower and inflorescence development is a two year process, often starting around bloom when primordia in developing buds commit to becoming either an inflorescence or a tendril. Branching is largely complete by veraison, ...
    • How Grapevine Buds Gain and Lose Cold-hardiness 

      Martinson, Timothy E. (Cornell University, 2011-02)
      Each year buds transition from a cold-tender to cold-hardy state through a gradual process that starts around veraison and continues through the winter.
    • How Grapevine Roots Grow 

      Martinson, Timothy E. (Cornell University, 2019-08)
      The roots of the grape may be difficult to see, but they are equally as important as the above ground grapevine for management and vine health. Extension specialist Tim Martinson explains root biology and seasonal growth ...
    • How Grapevines Reconnect in the Spring 

      Martinson, Timothy E.; Goffinet, Martin (Cornell University, 2012-03)
      In midwinter, buds are isolated from the rest of the vine's vascular system. Signals from the buds reactivate the vine's vascular cambium, reconnecting shoots, trunks, and roots - a process starting at budswell and ending ...
    • How Grapevines Respond to Water Stress 

      Martinson, Timothy E.; Lasko, Alan (Cornell University, 2016-08)
      Leaf stomata open and close to regulate water vapor and CO2 exchange. When drought stress causes closure, photosynthesis and evaporative cooling stops. Prolonged deficits cause leaf senescence, ripening delays, and carryover ...
    • How important are grapevine trunk diseases in New York? 

      van Zoeren, Janet; Martinson, Timothy E. (Cornell University, 2019-05)
      Trunk diseases can lead to blind buds, dead cordons or ‘dead arm’, reduced vigor, and ultimately missing vines. They've been receiving a lot of attention in other growing regions. How important are they here?
    • How many grapes in a bottle of wine? 

      Gerling, Chris (Cornell University, 2021-05)
      Chris Gerling revisits his previous article on "Conversion factors: from vineyard to bottle". It turns out it's more complicated.
    • I Have Galls in my Vineyard: Should I Call my Nursery? 

      Martinson, Timothy E.; Burr, Tom (Cornell University, 2015-05)
      Extreme winter low temperatures may lead to more grown gall formation this growing season.  Tim Martinson and Tom Burr, School of Integrative Plant Science, explain what causes this and how growers can be better prepared. 
    • Just make up your mind! The science behind cold-stabilization and tartarate removal in the winery 

      Sacks, Gavin (Cornell University, 2015-03)
      Ever wonder what those crystals are in a bottle of wine?  Associate Professor of Food Science Gavin Sacks explains how winemakers can reduce the chances of this happening, and why there is no need to worry as a consumer.  
    • Lessons from the Big Dig: Dry Matter, Nitrogen Updake, and Fertilizer Efficiency 

      Bates, Terry; Martinson, Timothy E.; Cheng, Lailiang; Lasko, Alan (Cornell University, 2013-05)
      Full-sized Concord vines, dug up at intervals to measure growth, nitrogen, and carbohydrate content of different tissues, shed light on vine nitrogen budgets and fertilizer efficiency.
    • Managing Black Rot 

      Weigle, Tim (Cornell University, 2014-03)
      New York Grape IPM specialist Tim Weigle provides the basic information you need to get a handle on black rot and its management.
    • Managing Winter-Injured Vines 

      Martinson, Timothy E. (Cornell University, 2014-06)
      With significant winter injury across the East, growers are faced with vines that have intact, healthy roots trying to push growth up into a canopy without many shoots and a reduced number and size of grape clusters.
    • Manipulating Cluster Size at Bloom 

      Martinson, Timothy E.; Particka, Chrislyn (Cornell University, 2015-11)
      Tim Martinson and Chrislyn Particka discuss limiting fruit set to reduce "cluster compactness" of tight-clustered grape varieties prone to Botrytis fruit rots.
    • Missing Parts: The cost of missing cordons, canes and vines 

      van Zoeren, Janet; Martinson, Timothy E.; Caldwels, Donald; Walter-Peterson, Hans (Cornell University, 2020-03)
      We surveyed 61 Finger Lakes vineyards in 2019 to find out how many missing cordons, buds, and vines there were in each block, and what these 'missing parts' might be costing growers.