Corn Research

Is Your Sweet Corn Hungry or Sick?

Distinguishing disease symptoms from those of nutrient deficiencies Tackling disease and nutrition problems usually requires different courses of treatment. As a result, it makes sense to get the diagnosis right the first time. According to Gordon Johnson, Extension vegetable specialist at the University of Delaware, in the case of sweet corn, in particular, there are times when symptoms of plant stand issues, vigor, or disease can be confused with a nutrient deficiency. For example, early in the season when the weather is cool, the plant leaves turn purple and growers sometimes associate that coloring with a phosphorus deficiency. Rather,...