Severe Preveraison and Moderate Postveraison Deficit Irrigation Improves Berry Phenolics in Warm-Climate Pinot noir

Suraj Kar; Cody R. Copp; Joseph B. DeShields; Ricky W. Clark; Alexander D. Levin

doi:10.5344/ajev.2025.25016

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Severe Preveraison and Moderate Postveraison Deficit Irrigation Improves Berry Phenolics in Warm-Climate Pinot noir

View ORCID ProfileSuraj Kar, View ORCID ProfileCody R. Copp, View ORCID ProfileJoseph B. DeShields, View ORCID ProfileRicky W. Clark, View ORCID ProfileAlexander D. Levin

Am J Enol Vitic. 2025 76: 0760024 ; DOI: 10.5344/ajev.2025.25016

Suraj Kar

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

3Wine and Viticulture Department, California Polytechnic State University, 1 Grand Ave., San Luis Obispo, CA 93405.

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Cody R. Copp

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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Joseph B. DeShields

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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ORCID record for Joseph B. DeShields

Ricky W. Clark

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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Alexander D. Levin

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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ORCID record for Alexander D. Levin
For correspondence: alexander.levin{at}oregonstate.edu

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vol. 76, article 0760024

DOI

https://doi.org/10.5344/ajev.2025.25016

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American Journal of Enology and Viticulture

History

Received April 2025
Accepted July 2025
Published online September 2025.

This is an open access article distributed under the CC BY 4.0 license.

Author Information

Suraj Kar1,3,
Cody R. Copp1,2,
Joseph B. DeShields1,2,
Ricky W. Clark1,2 and
Alexander D. Levin1,2,*

¹Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;
²Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;
³Wine and Viticulture Department, California Polytechnic State University, 1 Grand Ave., San Luis Obispo, CA 93405.

↵*Corresponding author (alexander.levin{at}oregonstate.edu; tel: +1 541 772 5165)

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Severe Preveraison and Moderate Postveraison Deficit Irrigation Improves Berry Phenolics in Warm-Climate Pinot noir

View ORCID ProfileSuraj Kar, View ORCID ProfileCody R. Copp, View ORCID ProfileJoseph B. DeShields, View ORCID ProfileRicky W. Clark, View ORCID ProfileAlexander D. Levin

Am J Enol Vitic. 2025 76: 0760024 ; DOI: 10.5344/ajev.2025.25016

Suraj Kar

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

3Wine and Viticulture Department, California Polytechnic State University, 1 Grand Ave., San Luis Obispo, CA 93405.

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ORCID record for Suraj Kar

Cody R. Copp

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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ORCID record for Cody R. Copp

Joseph B. DeShields

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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ORCID record for Joseph B. DeShields

Ricky W. Clark

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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ORCID record for Ricky W. Clark

Alexander D. Levin

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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ORCID record for Alexander D. Levin
For correspondence: alexander.levin{at}oregonstate.edu

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Open Access

Severe Preveraison and Moderate Postveraison Deficit Irrigation Improves Berry Phenolics in Warm-Climate Pinot noir

View ORCID ProfileSuraj Kar, View ORCID ProfileCody R. Copp, View ORCID ProfileJoseph B. DeShields, View ORCID ProfileRicky W. Clark, View ORCID ProfileAlexander D. Levin

Am J Enol Vitic. 2025 76: 0760024 ; DOI: 10.5344/ajev.2025.25016

Suraj Kar

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

3Wine and Viticulture Department, California Polytechnic State University, 1 Grand Ave., San Luis Obispo, CA 93405.

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ORCID record for Suraj Kar

Cody R. Copp

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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ORCID record for Cody R. Copp

Joseph B. DeShields

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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ORCID record for Joseph B. DeShields

Ricky W. Clark

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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ORCID record for Ricky W. Clark

Alexander D. Levin

1Department of Horticulture, Oregon State University, 4017 ALS Building, Corvallis, OR 97331;

2Southern Oregon Research and Extension Center, Oregon State University, 569 Hanley Rd., Central Point, OR 97502;

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ORCID record for Alexander D. Levin
For correspondence: alexander.levin{at}oregonstate.edu

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Severe Preveraison and Moderate Postveraison Deficit Irrigation Improves Berry Phenolics in Warm-Climate Pinot noir

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