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Grapevine Nutrition Grapevine Nutrition The best diagnostic tool is your The best diagnostic tool is your eyes! eyes! Ker 2007© Have you seen these in your Have you seen these in your vineyard? vineyard? Nutritional Disorders Nutritional Disorders Environmental Stresses Environmental Stresses Pesticide Toxicities Pesticide Toxicities Ker2007© Nutritional Disorders Nutritional Disorders Nitrogen Ker 2007© 1 Nutritional Disorders Nutritional Disorders Phosphorus Phosphorus Ker 2007© Nutrient Disorders Nutrient Disorders Potassium Potassium deficiency deficiency Ker2007© Nutritional Disorders Nutritional Disorders Potassium deficiency Potassium deficiency Ker 2007© 2 Nutritional Disorders Nutritional Disorders Potassium deficiency Potassium deficiency Ker 2007© Nutritional Disorders Nutritional Disorders Potassium deficiency Potassium deficiency Ker2007© Nutritional Disorders Nutritional Disorders Magnesium Magnesium Ker 2007© 3 Magnesium deficiency Magnesium deficiency Early Late Season Ker 2007© Magnesium – Magnesium – stem issues tem issues s Ker2007© Nutritional Disorders Nutritional Disorders Iron deficiency Iron deficiency Ker 2007© 4
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