KANAWHA, Iowa — Thistle caterpillars, late season crop diseases and crop development will highlight the fall field day Sept. 5 at Iowa State University’s Northern Research and Demonstration Farm.

"Farmers and agribusiness will hear the latest on thistle caterpillar and tar spot of corn," said Paul Kassel, field agronomist with Iowa State University Extension and Outreach. "Thistle caterpillar and tar spot are two new pests that have raised questions for Iowa producers in 2019."

The program begins at 9:30 a.m. with Matt Schnabel, Northern Research Farm superintendent, reviewing the growing season.

Erin Hodgson, associate professor and extension specialist in entomology, will discuss insect issue, including thistle caterpillars, soybean gall midge and soybean aphid management.

Alison Robertson, professor and extension specialist in plant pathology and microbiology at Iowa State, will talk about late-season corn diseases and a corn leaf disease that showed up this year.

Paul Kassel will discuss the impact of the late planting and summer growing conditions on crop development.

Angie Rieck-Hinz, ISU Extension and Outreach field agronomist, and Karen Wilke, coordinator with The Nature Conservancy, will discuss cover crop management for 2020 and some local funding options.

The farm is at 1040 James Ave., Kanawha, about 2 miles south of Kanawha on County Road R35.

Registration and refreshments will begin at 9 a.m. A noon lunch will be available. The field day is free, open to the public and includes complimentary refreshments and lunch.