MSU Extension Grapes

The information linked below is from MSU Extension’s handy pocket-sized guide for grape IPM scouting. Order in English or Spanish for a spiral-bound field guide.

Chemical injury

• Copper injury
• Diuron injury
• Glyphosate injury
• Paraquat injury
• Pesticide spray injury
• Phenoxy herbicide (2,4-D) injury
• Simazine injury

Abiotic vine condition

• Bird damage
• Bunch stem necrosis
• Chimera
• Guttation
• Hail damage
• Lack of fruit set
• Lightning
• Ozone injury
• Pearl bodies
• Sour soil
• Spring freeze injury
• Sun scald
• Winter injury

Nutrient deficiency

• Boron deficiency
• Iron deficiency
• Magnesium deficiency
• Manganese deficiency
• Nitrogen deficiency
• Potassium deficiency