Paul Kassel, Extension Field Agronomist, Northwest Area
Fungicide use on corn and soybean has increased in Iowa in recent years. Economic crop yield response to fungicide use has been variable. Farmers seek unbiased information to help make an informed decision.
Programmatic Response: I conducted 22 PCIC meetings during the FY09 year. The total attendance at these meetings was 1490. Corn and soybean disease identification was discussed at each meeting. Research results from fungicide application studies were discussed. The conditions where fungicide use would be beneficial for crop production was discussed.
An end of meeting survey was completed at the PCIC meetings. One question asked the participants if they applied a fungicide on corn in 2008. Forty-nine farmers (representing 21,160 acres) responded to the question. Fifty-four percent of the respondent’s corn acres (11,462 acres) were treated. Eight of those farmers (4,980 acres) used ISU Extension information to make a fungicide application decision. Those 8 farmers reported an economic response of $18.38 per acre for a total response of $91,532. Therefore, the results of these PCIC meetings were mainly medium-term results that resulted in some behavior change.
Twenty-five of the 49 meeting respondents reported that they did not use ISU Extension information when they made a fungicide application decision. Therefore, we have a continued need for additional research information to help farmers make informed decisions on corn fungicide application.
100 Corn and Soybean Production and Protection
Page last updated: August 5, 2009
Page maintained by Linda Schultz, firstname.lastname@example.org