• Crop Nutrient Deficiencies and Toxicities (2002) 

    Stevens, Gene; Motavalli, Peter Parviz; Scharf, Peter C. (Peter Clifton), 1959-; Nathan, Manjula; Dunn, David D. (University of Missouri Extension, 2002)
    Soil fertility is one of several factors, including light, moisture, weeds, insects, and diseases, that affect crop yield. An important part of crop farming is being able to identify and prevent plant nutrient deficiencies ...