Vine Nutrition & Soils
Just as you would never medicate your children without knowing whether or not they actually have an infection,you need to be able to diagnose nutrient deficiencies in your vineyards. How to do it? Soil and petiole testing can provide a clear picture of what is going on in your vineyard. The soil tests will determine what nutrients are available to be taken up by the vines' roots, and the petiole tests will show whether or not the roots are actually absorbing those nutrients. Once you have the soil tests, you have one sideof the story, and petiole tests will give you the other side of the vine nutrient story. A soil test can indicate that the soil pH, K, Mg, and N levels are all adequate, but if the vines are still puny, something else might be at work. This is where a petiole test comes in handy. VINE NUTRITION & SOILS CATEGORIES
Complete Vine Nutrition and Soils Summer Content
Kevin Martin, Extension Educator, Business Management
Kevin Martin, from the Lake Erie Regional Grape Program (Penn State University), is currently creating baseline economic data to provide regional grape growers with commercialization strategies for spatial vineyard management.
Edith Byrne, Association Program Educator I
Soil and petiole testing can provide a clear picture of what is going on in your vineyard. The soil tests will determine what nutrients are available to be taken up by the vines' roots, and the petiole tests will show whether or not the roots are actually absorbing those nutrients. Once you have the soil tests, you have one side of the story, and petiole tests will give you the other side of the vine nutrient story.
Edith Byrne, Association Program Educator I
Images of the Eichhorn-Lorenz Phenological Stages
Adapted from Eichhorn and Lorenz (1977) and Lorenz (1994)
Edith Byrne, Association Program Educator I
Inflorescence elongating: flowers closely pressed together
Edith Byrne, Association Program Educator I
Inflorescence fully developed: flowers separating
Edith Byrne, Association Program Educator I
Early flowering: 25% of caps fallen
Edith Byrne, Association Program Educator I
Full flowering: 50% of caps fallen
Edith Byrne, Association Program Educator I
Late flowering: 80% of caps fallen
GPS Technology in Local Vineyards
Kevin Martin, Extension Educator, Business Management
Lake Erie Regional Grape Program
Last Modified: July 19, 2017
Kevin Martin, from the Lake Erie Regional Grape Program (Penn State University), is currently creating baseline economic data to provide regional grape growers with commercialization strategies for spatial vineyard management.
Soil and Petiole Testing
Edith Byrne, Association Program Educator I
Lake Erie Regional Grape Program
Last Modified: March 13, 2013
Soil and petiole testing can provide a clear picture of what is going on in your vineyard. The soil tests will determine what nutrients are available to be taken up by the vines' roots, and the petiole tests will show whether or not the roots are actually absorbing those nutrients. Once you have the soil tests, you have one side of the story, and petiole tests will give you the other side of the vine nutrient story.
Eichhorn-Lorenz Phenological Stages
Edith Byrne, Association Program Educator I
Lake Erie Regional Grape Program
Last Modified: January 20, 2013
Images of the Eichhorn-Lorenz Phenological Stages
Adapted from Eichhorn and Lorenz (1977) and Lorenz (1994)
PHENOLOGICAL STAGES: Inflorescence elongating: flowers closely pressed together
Edith Byrne, Association Program Educator I
Lake Erie Regional Grape Program
Last Modified: January 12, 2013
Inflorescence elongating: flowers closely pressed together
PHENOLOGICAL STAGES: Inflorescence fully developed: flowers separating
Edith Byrne, Association Program Educator I
Lake Erie Regional Grape Program
Last Modified: January 11, 2013
Inflorescence fully developed: flowers separating
PHENOLOGICAL STAGES: Early flowering: 25% of caps fallen
Edith Byrne, Association Program Educator I
Lake Erie Regional Grape Program
Last Modified: January 9, 2013
Early flowering: 25% of caps fallen
PHENOLOGICAL STAGES: Full flowering: 50% of caps fallen
Edith Byrne, Association Program Educator I
Lake Erie Regional Grape Program
Last Modified: January 8, 2013
Full flowering: 50% of caps fallen
PHENOLOGICAL STAGES: Late flowering: 80% of caps fallen
Edith Byrne, Association Program Educator I
Lake Erie Regional Grape Program
Last Modified: January 7, 2013
Late flowering: 80% of caps fallen
Upcoming Events
LERGP Coffee Pot Meeting
July 16, 2025
Portland, NY
Come join us for timely and pertinent vineyard discussion, coffee, donuts and camaraderie.
LERGP Coffee Pot Meeting
July 23, 2025
Burt, NY
Come join us for timely and pertinent vineyard discussion, coffee, donuts and camaraderie.
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July 30, 2025 : LERGP Coffee Pot Meeting
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