This information was summarized from a June 23 teleconference with ISU extension field specialists in crops.

• Thunderstorms, wind, and hail occurred over the state last week. Rainfall from 1/2-inch to more than 7 inches was reported. There were reports from scattered areas statewide of hail and wind that caused crop damage.
• In areas that had severe wind, greensnap was reported. Some fields had 10-40 percent of the plants affected. Uneven corn continues to be a problem in many areas of the state. Symptoms of potassium deficiency on corn were reported in a few fields that were short on moisture.
• Stalk borers are migrating out of ditches into corn. Reports from Floyd and Cerro Gordo counties showed hopvine borer in fencerows.
• Postemergence herbicides continue to be applied in soybeans with some herbicide burn to leaves. Control of woolly cupgrass and common waterhemp are causing concern.
• Root rots are showing up on soybean plants. A lab test is needed to distinguish between two types--Rhizoctonia and Mycoleptodiscus; see pages 109-110 of last week's newsletter for more details.
• Regrowth of alfalfa was reported to be generally good, up to 8 inches in south central Iowa. Some fields in east central and south central areas contain threshold numbers of potato leafhoppers; less than threshold numbers are showing up on alfalfa regrowth in other areas of the state.
• Oats continue to be harvested for oat hay and silage. Barley yellow-dwarf virus was reported in east central and central areas. Wheat in the southeast area looks good with few reports of disease.