ISU Agronomy Department Extension
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Antonio P. Mallarino

Professor, Soil Fertility and Nutrient Management

Department of Agronomy
Iowa State University
Ames, Iowa 50011
Phone (515) 294-6200
Fax (515) 294-2458

Environmental P Issues/ Manure P Management:

Fertilizer Placement for No-Till and Ridge-Till Systems

Liquid Starter and Foliar Fertilization:

Precision Agriculture/Soil Sampling/Variable-Rate Fertilization:

Soil Test Interpretations and Fertilizer Recommendations: