Crop nutrient deficiencies & toxicities
Soil 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.