Home About Us Search Newsletters Weather / Climate Viticulture Pest management Scouting guide Publications Calendar of events Industry links Contacts Download Adobe Acrobat Reader to view pdf files.	Iron deficiency Tom Zabadal , MSU Horticulture Home > Scouting guide> iron deficiency Iron deficiency occurs occasionally on grapevines but seldom has economic impact. Affected vines have young, very light yellow leaves near shoot tips that may appear almost white. Extremely fast-growing shoots may exhibit this symptom. Some varieties are especially vulnerable to this deficiency when grown on highly alkaline soil. Photos: T. Zabadal  Additional information Sampling information from MSU Soil and Plant Nutrient Laboratory
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Funding for this web site provided by Project GREEEN, American Farmland Trust, EPA Region 5's Strategic Agricultural Initiative program, The National Foundation for IPM Education, the Center for Agricultural Partnerships and the MSU Integrated Pest Management Program in collaboration with MSU Extension and the Michigan Agricultural Experiment Station. Partially support from NC-IPM Center. Updated 12/20/07 Contact: E. Haney