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Training and Pruning Grapevines

Maurus Brown, Ph.D. Extension Specialist OSU South Centers 1864 Shyville Rd. Piketon, OH 45661 Phone: 740-289-2071, Ext. 123 Email: [email protected]

Training Vines

Early Vine Management

Important cultural practices Influence vine growth Enhance vine longevity Establish vine form Training system (VSP, HBC) Large, healthy root system Maximum leaf area

Training Vines

Training Systems

Vertical Shoot Position (VSP) High bi-lateral cordon (HBC) Smart­Dyson (S-D) Scott Henry (SH)

VSP System

Reference: OSU Bulletin 919 Midwest Grape Production Guide HBC System

Training Vines

First Year

Train properly

Type of training system Train vines up off the ground

Apply fertilizer as needed Do Not over apply nitrogen Good weed control Good disease and insect control

Training Vines

First Year

Build trellis ­ follow diagram for VSP, HBC, S-D, or SH 1st versus 2nd year construction Use wood or bamboo stake to support young vines Develop strong straight shoots - good trunk structure Shoot vigor ­ weed and fertility program Top wire (High BC versus Low Cordon ­ VSP system)

Training Vines

Grow Tubes ­ Normally Not Recommended

Greenhouse effect Rapid shoot growth Single dominant shoot Long internodes Straight shoots No overall growth increase Herbicide protection Deer protection Labor to install/remove Mid-August - September

Training Vines

Training Vines

Second Year

Promote trunk development Extend shoot growth Develop cordons to proper length Tip shoots, promote cordon laterals Double trunk system

Retain two shoots (canes)

Avoid canes with winter injury Shoots used for trunks

Scion vs Rootstock

Good weed management program

Pruning Vines

Maintain good vine structure Enhance fruit production Improve overall fruit quality Remove excess wood Balance fruit vegetation Promote growth along trellis Help manage crop load

Pruning Vines

Spur Prune (3 - 4 fruiting buds/spur) Weigh 1-year old wood Prune in late Feb. ­ Mar. Avoid pruning in Dec. & Jan. Prune before budbreak Spring frost damage Compound buds (1o, 2o, 3o)

a) <15% bud kill - prune normal b) 15 ­ 50% adjust pruning formula c) >50% bud kill ­ do not prune

Pruning Vines

Variety No. of Buds for 1st pound of wood No. of Buds for each additional pound of wood 10* 10* 10 10* 10* Maximum No. of Buds

Canadice Himrod Mars Reliance Vanessa

30 30 30 30 30

50 50 60-70 50 50

Pruning Vines

Variety No. of Buds for 1st pound of wood 30 15 20 20 20 20 15 No. of Buds for each additional pound of wood 10 5* 20* 10* 20? 10* 5* Maximum No. of Buds 60-70 30-40 30-40 30-40 40-50 40-50 30-40

Leon Millot Vidal Chambourcin Seyval Traminette Chancellor Vignoles

Pruning Vines

Variety No. of Buds for 1st pound of wood 30 25 25 30 60 No. of Buds for each additional pound of wood 10 10 10 10 10 Maximum No. of Buds 60-70 40-50 40-50 60-70 80-90

Concord Catawba Delaware Niagara Norton (GDC)

Pruning Vines

Variety

No. of Buds for 1st pound of wood 20

No. of Buds for each additional pound of wood 20*

Maximum No. of Buds 40

Vinifera Varieties

Pruning Vines

High Bilateral Cordon (HBC) System

Pruning Vines

Vertical Shoot Positioned (VSP) System

Information

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