Nutrient deficiencies
Extension Publications
- CROP 3135 Micronutrients for soybean production in the North Central Region
- ICM1 Integrated Crop Management and Pesticide Application - Field Records
- IPM 42 Nutrient Deficiencies and Application Injuries in Field Crops
- CROP 3153 Phosphorus and Potassium Tissue Testing in Corn and Soybean
Presentations
- Nutrient deficiency symptoms. J. Sawyer. Crop Diagnostic Clinics, Field Extension Education Laboratory, Iowa State Univ., Ames, IA
Newsletter Articles
- Yellow soybean too early this season? (8/2021)
- Nitrogen deficient soybean with excess soil moisture (7/2021)
- What's with all the yellow soybean? (7/2021)
- What causes striped corn leaves? (6/2021)
- Upper soybean leaves began showing potassium deficiency symptoms since early August in some Iowa fields (8/2019)
- Care with plant nutrient analysis (6/2012)
View newsletter articles 2015 and earlier -- click here to expand
Featured Publication
Nutrient Deficiencies and Application Injuries in Field Crops -- Integrated Pest Management
John Sawyer
Color photos and descriptions aid in identifying nutrient deficiencies and injury due to fertilizer in order to accurately diagnose symptoms for corn, soybeans, alfalfa, and winter wheat.
John Sawyer
Quick Links
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