The dry weather is still affecting area crops says Jim Fawcett, ISU Extension Field Agronomist. He says spider mites on soybeans are still the main problem. Fawcett says spider mites appeared earlier this year than normal and the dry weather has caused them to spread across Iowa.
Another issue is potassium deficiency in corn. This comes from dry surface soils where the roots don’t function properly. Fawcett says farmers should continue to scout their fields for the spider mites and use insecticides to control them.
He adds the corn problems can be fixed if we receive rainfall.