Crop nutrient deficiencies & toxicities

Integrated Pest ManagementPlant Protection ProgramsCollege of Agriculture, Food and Natural ResourcesPublished by MU Extension, University of Missouri-ColumbiaGene Stevens, Department of Agronomy, University of Missouri-Delta Center; Peter Motavalli, Soil Science Program, University of Missouri-Columbia; Peter Scharf, Department of Agronomy, University of Missouri-Columbia; Manjula Nathan, Department of Agronomy, University of Missouri-Columbia; David Dunn, Soil Test Laboratory, University of Missouri-Delta CenterUnless otherwise credited in the captions, the photographs were provided by the authors. Many of the symptom descriptions were taken from MU publication G9132, Signs of Crop Hunger, by Marshall Christy."Reviewed November 2018" -- websiteSoil fertility is one of several factors, including light, moisture, weeds, insects, and diseases, that affect crop yield (Figure 1). An important part of crop farming is being able to identify and prevent plant nutrient deficiencies and toxicities. This publication provides background information on the nature and development of crop nutrient disorders under the growing conditions commonly encountered in Missouri. It is a guide to identifying crop nutrient problems through observable symptoms on crop plants. Information is provided on effects of climatic conditions on plant nutrient availability, and the results of soil and plant tissue testing