Solemn means someone or something serious, sincere or impressive. 1  An example of solemn is how someone's face looks when worried about a sick friend.
Symptoms of anthracnose are fairly common early in the season on lower leaves and later in the season on upper leaves. However, it is normally not an economic problem. Drift or contact from chemicals, such as paraquat or glyphosate, can also cause spots on corn leaves. Paraquat injury on corn. These spots can also be confused with holcus spot, but an obvious pattern should be visible throughout the field.
Common rust, caused by Puccinia sorghi, can be a yield-limiting disease of sweet corn. Sweet corn yield is reduced about 6% for each 10% rust severity (leaf area infected) at harvest (Figure 1).Severity of rust is affected by the growth stage at which plants are first infected, weather, and host resistance.Severe infection must be prevented in order to avoid yield reductions due to rust.weet corn hybrids with compound rust resistance are being developed presently. Prior to 1999, the Rp1-D gene effectively controlled common rust on sweet corn in North America. In 1999 and 2000, a population of P. sorghi that was virulent against the Rp1-D gene occurred in North America.